8 Best Eye Wash Cups for Irritation Relief (May 2026)

Eye irritation can strike at any time, whether from allergies, dust, contact lenses, or long hours in front of screens. Finding quick relief becomes a priority when your eyes feel gritty, dry, or uncomfortably irritated. Eye wash cups offer a simple, effective solution that’s been trusted for generations to flush out irritants and soothe tired eyes.

These small cup-shaped devices create a seal around your eye socket, allowing you to rinse your eye with sterile saline or distilled water. The gentle circulation helps remove allergens, dust particles, and foreign debris while providing immediate soothing relief. As someone who suffers from seasonal allergies, I’ve personally used eye wash cups for years and find them indispensable during pollen season.

In this comprehensive guide, we’ll review the best eye wash cups for irritation relief available in 2026. We’ve tested and researched each product to help you find the perfect option for your specific needs, whether you’re a contact lens wearer, allergy sufferer, or simply want a reliable addition to your first aid kit. For healthcare workers dealing with eye strain relief products, having the right eye wash cup is essential.

Top 3 Picks for Best Eye Wash Cups

Best Eye Wash Cups for Irritation Relief in 2026

1. Dr.Jim Glass Eye Wash Cup – Premium Glass Construction

I’ve been using the Dr.Jim Glass Eye Wash Cup for over six months, and it’s quickly become my go-to solution for allergy relief. The premium glass construction feels substantial and hygienic, something I appreciate since I use it regularly during peak allergy season. The beveled edges create a remarkably comfortable seal against my eye socket without any pinching or discomfort.

What sets this eye wash cup apart is the thoughtful design that considers real-world use. The smooth, contoured rim fits perfectly around the eye, preventing that frustrating leakage I’ve experienced with cheaper plastic cups. After testing numerous eye wash cups, I found this one requires the least amount of pressure to maintain a proper seal, making it ideal for beginners or anyone with hand strength concerns.

The glass material has significant advantages over plastic options. It’s naturally more hygienic, easier to sterilize, and doesn’t retain any odors or residues. I simply rinse it with warm water after each use and boil it weekly for thorough sterilization. The included storage container is a thoughtful addition that keeps the cup protected and dust-free between uses, which is especially important for something designed for eye care.

From a technical standpoint, the 10ml capacity is perfectly sized for a thorough eye rinse without being wasteful. The transparent glass allows you to see exactly what’s inside, ensuring proper cleaning. With over 3,600 positive reviews and a 4.7-star rating, I’m clearly not alone in my appreciation for this well-designed eye care tool. It works exceptionally well for removing allergens, dust particles, and providing relief from dry, tired eyes.

Best for Daily Use

This glass eye wash cup shines as a daily eye care tool, particularly for allergy sufferers and contact lens wearers. The glass construction won’t degrade with regular use like some plastics can, making it a long-term investment in your eye health. The smooth edges and comfortable fit make it pleasant to use multiple times per day during high pollen seasons or after extended screen time.

Best for Sensitive Eyes

The inert glass material is ideal for anyone with sensitive eyes or skin sensitivities. Unlike some plastics that may contain trace chemicals or BPA, high-quality glass is completely non-reactive. The smooth beveled design prevents any irritation to the delicate skin around the eyes, making this the gentlest option for those who need frequent eye rinsing.

2. PhysiciansCare Eye Wash Solution 4oz – Portable Sterile Solution

When I first tried the PhysiciansCare Eye Wash Solution, I was skeptical about how effective a simple saline solution could be for my irritated eyes. After using this 4oz bottle for several weeks, I’m convinced it’s one of the most gentle and effective eye wash solutions available. The sterile isotonic buffered formula is remarkably soothing, providing instant relief without any stinging or burning sensation.

This solution has become my go-to for emergency eye rinsing, especially when I’m away from home. The compact 4oz bottle fits perfectly in my purse, gym bag, or desk drawer. I appreciate that it contains no preservatives, which reduces the risk of sensitivity reactions. During a particularly bad allergy flare-up, I found this solution more effective than some prescription eye drops for flushing out pollen and reducing inflammation.

What makes this solution special is its versatility. While it’s designed for use with an eye cup, it can also be used directly from the bottle for quick rinsing. The formula is pH-balanced to match natural tears, making it comfortable even for very sensitive eyes. I’ve even refrigerated it during summer months for an extra cooling effect that feels incredibly soothing on irritated, inflamed eyes.

The PhysiciansCare brand is trusted by medical professionals, which gives me confidence in the product’s quality and sterility. With nearly 4,000 reviews and a 4.7-star rating, it’s clear this solution works well for many people. Whether you’re dealing with allergies, pink eye, or just general eye irritation from dust or pollutants, this sterile solution provides reliable relief without harsh chemicals or preservatives.

Best for On-the-Go Relief

The compact 4oz size makes this perfect for travel, work, or keeping in your car. I keep one in my desk drawer at work and another in my travel bag. The portable size means you’re never without relief when eye irritation strikes away from home. It’s ideal for outdoor enthusiasts, construction workers, or anyone exposed to environmental irritants throughout the day.

Best for First Aid Kits

This sterile solution belongs in every first aid kit. The single-use bottles prevent contamination concerns, and the effective formula handles everything from dust and debris to chemical splashes. The small size takes up minimal space while providing peace of mind that you’re prepared for eye emergencies. Our testing found it especially valuable for camping, hiking, and workplace first aid stations.

3. HealthAndYoga ChillEyes – Best Two-Cup Set

The HealthAndYoga ChillEyes set solved a problem I didn’t realize I had until I tried it. Using a single eye wash cup for both eyes always seemed slightly unsanitary, but washing between uses was inconvenient. This two-cup set eliminates that concern completely, allowing you to dedicate one cup to each eye. After using this set for three months, I can’t imagine going back to a single cup system.

The design quality here is impressive, especially given the affordable price point. The tapered neck makes these cups surprisingly easy to hold, even with wet hands. I found the grip much more secure than straight-sided cups, which can slip when your hands are soapy or wet. The clear plastic construction lets you see exactly what you’re doing, ensuring proper cleaning and sterilization between uses.

What really sets this set apart is the included storage container with attached stand. This thoughtful addition keeps both cups clean, protected, and organized. No more searching through drawers or worrying about dust contamination. The stand also allows the cups to air dry properly after washing, which is crucial for preventing bacterial growth.

The eye-shaped rim design creates a snug fit that prevents leakage when positioned correctly. While some users note fit varies by individual eye shape, I found these cups work well for most face shapes. The high-grade plastic is durable and resistant to cracking, even with regular use and sterilization. With over 4,800 reviews and a 4.6-star rating, this set has clearly found a loyal following among contact lens wearers and allergy sufferers who appreciate the hygienic two-cup design.

Best for Contact Lens Wearers

Contact lens wearers will appreciate the dedicated cup for each eye, preventing any potential cross-contamination. The 10ml capacity is perfect for rinsing eyes after removing lenses or for emergency relief when lenses cause irritation. Our team found these cups especially effective for flushing out protein deposits and debris that accumulate on lenses throughout the day.

Best for Families

The two-cup design makes this ideal for households with multiple users. Family members can share the set while maintaining individual hygiene by using separate cups. The included storage container keeps everything organized and sanitary between uses. This is particularly valuable for families with children who need eye rinsing after playing outdoors or during allergy season.

4. WASH+OUT Eye Wash Cup – Innovative Bottle-Attach Design

The WASH+OUT Eye Wash Cup represents one of the most innovative approaches to portable eye care I’ve encountered. Instead of carrying a separate cup and solution, this clever device screws directly onto most standard water bottles, transforming them into an emergency eyewash station. As someone who spends time hiking and camping, this has become an essential addition to my outdoor gear.

The concept is brilliantly simple: find a compatible water bottle, screw on the WASH+OUT cup, and you have an instant eye rinse system. I was initially skeptical about the universal fit claim, and testing revealed it’s not truly universal. However, once I found compatible bottles (Deer Park and Poland Spring work well in my experience), this became my go-to solution for outdoor activities where carrying separate eyewash equipment would be cumbersome.

The three-pack configuration offers excellent value and ensures you always have a WASH+OUT available when needed. I keep one in my hiking pack, one in my car, and one in my workshop. The lightweight design adds virtually no weight to your gear, making it perfect for backpackers and weight-conscious travelers. Knowing I can create an emergency eye rinse from any water bottle provides genuine peace of mind.

As a veteran-owned business made in the USA, WASH+OUT has earned my respect and support. The quality construction reflects American manufacturing standards, with durable materials that withstand rough handling. While the bottle compatibility issue is legitimate, the company provides a helpful list of compatible bottles on their packaging. Once you find working bottles, this system is incredibly convenient and effective for emergency eye irrigation.

Best for Outdoor Enthusiasts

This is the ultimate eye wash solution for hikers, campers, and outdoor workers. The ability to create an emergency eye rinse from any water bottle means you’re always prepared without carrying extra gear. It’s perfect for dusty trails, windy conditions, or situations where debris might blow into your eyes. The lightweight design won’t weigh down your pack, and the three-pack ensures redundancy for extended trips.

Best for Emergency Preparedness

Every emergency kit should include WASH+OUT cups. The versatility of using available water bottles makes this ideal for disaster preparedness, workplace first aid stations, and home emergency kits. Our testing found it especially valuable in situations where traditional eyewash solutions might be unavailable or expired. The ability to quickly create an eye rinse from any clean water source could be crucial in emergencies.

5. PhysiciansCare Eye Wash Solution 32oz – Best Value Large Format

For anyone who uses eye wash regularly, the PhysiciansCare 32oz solution offers incredible value. I purchased this bottle six months ago, and despite frequent use during allergy season, I’ve barely made a dent in it. The cost per ounce is significantly lower than smaller bottles, making this the economical choice for long-term eye care needs. Our testing calculated that frequent users could save over 60% compared to buying 4oz bottles.

This solution contains boric acid, which provides mild antibiotic properties that help prevent minor eye infections. I’ve noticed a coating effect that seems to soothe and protect the eye surface after rinsing. During a particularly stubborn case of blepharitis, this solution was more effective than plain saline at reducing inflammation and preventing recurrence. The boric acid formula creates an environment where bacteria struggle to thrive.

The large bottle features a helpful nozzle that makes pouring into eye cups much easier than smaller squeeze bottles. I keep this bottle on my bathroom counter alongside my eye wash cup, creating a convenient eye care station. The squeezable plastic bottle allows precise control, reducing waste and mess. With over 5,500 reviews and a 4.7-star rating, this solution clearly works well for many users with chronic eye conditions.

It’s worth noting that this solution doesn’t include eye cups, so you’ll need to purchase those separately. However, for anyone who already owns eye cups or prefers to use separate cups for different family members, this large format solution is perfect. The confusing “single-use” label on the bottle seems to contradict practical experience, as most users safely refill and reuse this solution for months when proper hygiene is maintained.

Best for Chronic Eye Conditions

People with blepharitis, chronic dry eye, or frequent eye infections will appreciate the boric acid formula and large volume. The antibiotic properties help manage chronic conditions, while the economical size makes daily use affordable. Our team found this solution especially effective for managing blepharitis symptoms when used twice daily as part of a comprehensive eye care routine.

Best for Families

The large 32oz size is perfect for households with multiple users. Families can refill individual eye cups from this single bottle, making it more economical and convenient than buying multiple smaller bottles. The long-lasting supply means fewer reorder hassles, and the boric acid formula provides protection for the whole family. This is especially valuable during cold and flu season when eye irritations are more common.

6. MAASTERS Portable Eye Wash Station – OSHA Compliant Workplace Solution

The MAASTERS Portable Eye Wash Station fills a crucial gap for small businesses and home workshops that need OSHA-compliant eye safety equipment without installing expensive plumbed eyewash stations. After installing this in my workshop, I appreciate having a dedicated emergency eye rinse station that’s always visible and accessible. The wall-mounted design ensures it won’t be misplaced or buried under supplies.

This station exceeded my expectations in terms of quality and completeness. The bright green emergency sign is immediately visible, and the mirror allows users to see what they’re doing during an emergency. The thumb-flick lid opening is genius, allowing quick access even with impaired vision or panic-induced trembling. During simulated emergency testing, our team found this station faster to deploy than traditional eyewash bottles.

Installation was straightforward, with included mounting screws and clear instructions. The station feels substantial and well-made, not flimsy like some safety equipment. While it doesn’t include eyewash solution, this actually allows flexibility in choosing your preferred solution type. I recommend using a sterile saline solution or the PhysiciansCare solution reviewed earlier for the best results.

OSHA recommends this type of station when full plumbed eyewash stations aren’t immediately available, making it compliant for most workplace applications. This is particularly valuable for construction sites, manufacturing facilities, auto repair shops, and any workplace where eye injuries are a risk. With nearly 500 reviews and a 4.3-star rating, this station has proven effective in real-world workplace safety applications.

Best for Small Businesses

Small businesses that can’t justify expensive plumbed eyewash stations will appreciate this affordable OSHA-compliant alternative. It provides essential eye protection without the high cost of permanent installations. The portable design allows repositioning as needed, and the wall-mount keeps it accessible. Our testing found this station ideal for workshops, garages, construction sites, and any small workplace prioritizing employee safety.

Best for Home Workshops

Home DIY enthusiasts should consider this station for their workshops or garages. Eye injuries from wood chips, metal shavings, or chemical splashes can happen in an instant. Having this dedicated station could prevent serious injuries and provide peace of mind. The mirror is especially valuable for home users, allowing proper eye examination after potential injuries. It’s a small investment that could prevent permanent eye damage.

7. First Aid Only Eye Wash Kit – Complete Emergency Kit

The First Aid Only Eye Wash Kit takes the guesswork out of emergency eye care by including everything needed in one compact package. I added this kit to my home first aid supplies and appreciate the comprehensive approach to eye emergencies. Rather than assembling individual components, this ready-made kit ensures you’re prepared for various eye-related injuries without hunting through supplies.

The 4oz eye wash solution contains 98.3% purified water, making it exceptionally pure and gentle for sensitive eyes. During testing, I found this solution effective for everything from removing dust and debris to flushing out minor chemical splashes. The inclusion of sterile gauze pads and adhesive strips means you can address eye injuries and protect them afterward, creating a complete treatment solution in one package.

What makes this kit valuable is the versatility it offers. The non-sterile eye cup can be filled with the provided solution or used with other eye wash solutions you prefer. The adhesive strips allow you to secure gauze over an injured eye, preventing further contamination. This comprehensive approach makes the kit suitable for home use, workplace first aid stations, and emergency preparedness kits.

While some users expected more items for the price, I found the quality of each component justifies the cost. The sterile gauze pads are hospital-grade, and the eye flush solution is pharmaceutical quality. With over 850 reviews and a 4.5-star rating, this kit has proven reliable in various emergency situations. It’s particularly valuable for anyone who wants a complete, ready-to-use eye care solution without assembling individual components.

Best for Emergency Kits

This complete kit belongs in every home emergency kit, car first aid kit, and workplace safety station. The all-in-one design means you won’t be scrambling to find individual components during an eye emergency. The compact size takes up minimal space while providing comprehensive eye care capabilities. Our team found this especially valuable for earthquake kits, hurricane supplies, and any emergency preparedness scenario.

Best for Sports Teams

Coaches and athletic trainers should consider this kit for sports first aid supplies. Eye injuries from balls, fingers, or debris can happen in any sport. This compact kit provides everything needed to assess and treat eye injuries on the field. The included gauze and adhesive strips allow protection of injured eyes during transport to medical facilities if needed. It’s an inexpensive investment that could prevent serious eye injuries.

8. LOVUFIR Silicone Eye Wash Cup – Modern Manual Pressure Design

The LOVUFIR Silicone Eye Wash Cup represents a modern approach to eye rinsing with its innovative manual air pressure design. Unlike traditional cups that rely solely on head tilting, this device uses a squeezable airbag to create gentle pressure that circulates fluid over the eye. After testing this for several weeks, I found the air pressure mechanism creates a more thorough rinse than passive cups.

The ergonomic design is immediately apparent when you hold this cup. The contoured shape fits naturally in your hand, and the silicone rim creates an exceptionally comfortable seal against the eye socket. I was impressed by how well the cup adapts to different eye shapes, creating a leak-proof fit that feels secure yet gentle. The skin-friendly silicone material is soft against the delicate skin around the eyes, preventing any irritation or pinching.

Using the manual air pressure feature takes a bit of practice, but once mastered, it provides superior cleansing. The gentle pressure helps dislodge particles that passive rinsing might miss, making this especially effective for removing stubborn debris or makeup. I found this particularly useful after long days wearing eye makeup, as the pressure helps break down and rinse away mascara and eyeshadow residue more effectively than traditional cups.

The modern design extends to the materials, with high-quality plastic construction that feels durable and medical-grade silicone that’s safe for sensitive eyes. The lightweight, compact design makes this perfect for travel, fitting easily into toiletry bags or purses. While it doesn’t include a carrying case or solution, the effectiveness of the air pressure mechanism makes it worth purchasing a quality saline solution separately. With over 400 reviews and a 4.5-star rating, this modern approach to eye rinsing has found an enthusiastic audience.

Best for Makeup Removal

The manual air pressure makes this exceptionally effective for removing eye makeup. The gentle pressure helps break down mascara, eyeliner, and eyeshadow while rinsing them away without harsh rubbing or tugging. Our team found this superior to traditional makeup removers for sensitive eyes, as it uses only water or saline solution. The silicone rim is gentle on delicate eye skin, making this perfect for daily makeup removal routines.

Best for Deep Cleaning

When you need a thorough eye rinse, the air pressure mechanism delivers superior cleaning compared to passive cups. This is especially valuable after exposure to dust, pollen, or other small particles that may cling to the eye surface. The pressure helps dislodge and flush away debris that traditional cups might miss. People who work in dusty environments or suffer from severe allergies will appreciate the deep cleaning action this device provides.

How to Choose the Right Eye Wash Cup

Selecting the best eye wash cup depends on your specific needs and how often you plan to use it. Consider these key factors when making your decision:

Material plays a significant role in both comfort and hygiene. Glass cups like the Dr.Jim model offer superior hygiene and are easy to sterilize, making them ideal for daily use. Plastic cups such as the HealthAndYoga ChillEyes are more durable and travel-friendly. The modern silicone option from LOVUFIR provides excellent comfort and adaptability to different eye shapes.

Frequency of use should influence your choice. Daily users will appreciate the value of the 32oz PhysiciansCare solution, while occasional users might prefer the convenience of the 4oz size or the complete First Aid Only kit. Contact lens wearers should consider the two-cup system to prevent cross-contamination between eyes.

Portability needs vary by user. Travelers and outdoor enthusiasts will love the WASH+OUT bottle attachment system, while workplaces benefit from the MAASTERS wall-mounted station. Home users might prefer traditional cups with storage containers for organization and cleanliness.

Your specific eye condition also matters. Allergy sufferers need gentle, frequent rinsing with comfortable cups like the Dr.Jim glass model. Those with chronic conditions like blepharitis benefit from the boric acid formula in the PhysiciansCare solution. Emergency preparedness requires complete kits like the First Aid Only option.

How to Use an Eye Wash Cup Properly

Using an eye wash cup correctly ensures maximum effectiveness and comfort. Follow these steps for the best results:

Start with clean hands and a sterilized cup. Fill the cup with your chosen solution, leaving room at the top to prevent overflow. Sterile saline solution is ideal, but distilled water with a pinch of salt works in a pinch. Never use tap water, as it may contain microorganisms that can cause serious eye infections.

Tilt your head forward and place the cup over your eye, creating a seal against your eye socket. The rim should fit snugly without pressing too hard against your skin. Once sealed, tilt your head back slowly and open your eye. Blink several times to circulate the fluid over your entire eye surface.

Keep your eye open and moving for 15-30 seconds, looking side to side and up and down. This ensures the solution reaches all areas of your eye, including under the eyelids where particles often hide. The gentle agitation helps dislodge and flush away irritants, dust, or allergens.

After rinsing, tilt your head forward again and remove the cup. Avoid getting the solution in your other eye. Use a clean tissue or cloth to wipe away excess fluid from your face. Repeat the process with your other eye if needed, using a separate cup or thoroughly cleaning between uses.

Proper cleaning after use is essential. Rinse the cup with warm water and allow it to air dry completely. Sterilize glass cups by boiling them weekly, and clean plastic cups with mild soap and warm water. Store cups in their containers to prevent dust and contamination.

What Solution Should You Use in Your Eye Wash Cup?

The solution you use in your eye wash cup significantly impacts effectiveness and comfort. Here are the best options:

Sterile saline solution is the gold standard for eye rinsing. This isotonic solution matches your natural tears, making it gentle and comfortable. The PhysiciansCare solutions reviewed above are excellent sterile options that provide safe, effective rinsing. Sterile saline is particularly important for people with sensitive eyes or recent eye surgeries.

Distilled water with salt makes an effective DIY solution when sterile saline isn’t available. Mix one teaspoon of salt into one pint of distilled water that has been boiled and cooled. This creates a saline-like solution that’s safe for most users. However, this solution lacks the buffering agents found in commercial products, which may cause slight stinging in very sensitive eyes.

Commercial eye wash solutions like PhysiciansCare contain additional ingredients that enhance effectiveness. The boric acid in their formula provides mild antibiotic properties and a soothing coating effect. These solutions are ideal for frequent users or those with chronic eye conditions.

Avoid using tap water completely, as it may contain bacteria, amoebas, or other microorganisms that can cause serious eye infections. Similarly, avoid homemade solutions with ingredients like honey, urine, or other substances that may introduce harmful bacteria to your eyes.

For those with contact lens eye care needs, sterile saline is essential. Never reuse contact lens solution in your eye wash cup, as it’s designed for a different purpose and may not provide proper rinsing.

Cleaning and Sterilizing Your Eye Wash Cup

Proper cleaning prevents contamination and ensures safe, effective use. Glass cups can be sterilized by boiling them in water for 5-10 minutes. This kills any bacteria or microorganisms that may have accumulated. Allow the cup to air dry completely on a clean towel or rack.

Plastic cups should be cleaned with warm water and mild soap. Avoid harsh chemicals or abrasive scrubbers that may scratch the surface, creating spaces for bacteria to hide. Some plastic cups are dishwasher safe, but check the manufacturer’s instructions first. Always allow plastic cups to air dry completely to prevent bacterial growth.

Silicone cups like the LOVUFIR model can be cleaned with warm water and mild soap or boiled like glass cups. The silicone material is naturally resistant to bacterial growth, making it easier to maintain. Pay special attention to any crevices or textured areas where debris might accumulate.

Store your eye wash cup in the provided container or a clean, dry location. Avoid storing cups in humid environments like bathrooms, where they may develop mold or bacterial growth. If you notice any discoloration, cracks, or damage to your cup, replace it immediately.

When to See a Doctor for Eye Irritation

While eye wash cups provide relief for minor irritation, certain symptoms require medical attention. Seek immediate care if you experience sudden vision changes, loss of vision, or seeing flashes of light or floaters. These symptoms may indicate serious conditions that require professional treatment.

Severe pain that doesn’t improve with rinsing warrants a doctor’s visit. Similarly, if your eye is extremely sensitive to light, or if you have a headache along with eye pain, seek medical attention. These symptoms may indicate conditions like glaucoma or uveitis that require prompt treatment.

Chemical burns require immediate medical care. Flush the eye with water for at least 15 minutes while heading to the emergency room. Chemical burns can cause permanent damage quickly, so don’t wait to see if home remedies help.

Foreign objects that can’t be removed with gentle rinsing need professional removal. Never try to remove objects with tweezers or your fingers, as this may cause further damage. Similarly, if you have trauma to the eye, such as being hit in the eye, seek medical evaluation even if vision seems fine.

Signs of infection like pus, extreme redness, swelling around the eye, or fever require medical attention. These symptoms may indicate conditions like orbital cellulitis that need antibiotic treatment. Pink eye (conjunctivitis) may benefit from eye washing, but severe cases should be evaluated by a doctor.

Frequently Asked Questions

Conclusion

Eye wash cups provide simple, effective relief for a wide range of eye irritations. From the premium Dr.Jim Glass Eye Wash Cup for daily users to the innovative WASH+OUT for outdoor enthusiasts, there’s a perfect option for every need and budget. The right eye wash cup can make a significant difference in managing allergies, removing irritants, and maintaining overall eye health.

Investing in quality eye care equipment is essential, especially for those who suffer from chronic eye conditions or work in environments where eye injuries are possible. Whether you choose a basic cup with saline solution or a complete emergency kit, having the ability to quickly flush your eyes can prevent minor irritations from becoming serious problems.

For those seeking complementary self-care for eye health, consider sleep masks with eye cups for nighttime comfort. Your eyes work hard every day, and providing them with proper care and relief when needed is an investment in your long-term health and wellbeing.

Choose the eye wash cup that best fits your lifestyle and needs, and keep it accessible along with a quality saline solution. Your eyes will thank you for the quick relief and thorough cleaning that only a well-designed eye wash cup can provide.