Quick Answer
Sclera lenses are larger than standard contacts—typically 17mm to 22mm—so they cover the entire visible eye, including the white part. This gives you full eye coverage for dramatic costume effects, but they require extra care and a longer adaptation period.
Why Size Matters: 17mm vs 22mm
The main difference between sclera lenses and regular colored contacts is size. Standard lenses are about 14mm, while sclera lenses start at 17mm and go up to 22mm. A 17mm lens covers most of the visible eye, leaving a thin rim of white, while a 22mm lens covers the entire visible sclera for a fully transformed look.
Your choice depends on the effect you want. If you need a subtle widening or a hint of color, 17mm is easier to wear and more comfortable for beginners. If you're going for a full monster, alien, or ghoul effect, 22mm gives you that complete coverage but takes more getting used to.
Comfort and Adaptation
Because sclera lenses are larger and cover more of the eye, they sit differently than regular contacts. The lens rests on the sclera (the white part), which is less sensitive than the cornea, but the increased surface area means more edge awareness. Many first-time wearers feel the lens edges or experience increased tearing during the first few minutes.
Plan to wear them for short periods at first—no more than 2-3 hours—to let your eyes adjust. Always carry lubricating eye drops approved for contact lenses, and remove them immediately if you feel pain, redness, or blurred vision that doesn't clear.
Safety First: Hygiene and Handling
Sclera lenses require the same hygiene as any contact lens, but their size makes handling slightly trickier. Always wash and dry your hands before insertion. Use the included blister pack or lens case with fresh solution, and never use water or saliva.
Because these lenses are larger, they can be more prone to trapping debris under the edges. Make sure the lens is centered and free of any particles before inserting. If you're new to sclera lenses, practice inserting and removing them before your event day.
Sclera Lens FAQ
What is the main difference between sclera and regular contact lenses?
Sclera lenses are much larger (17mm-22mm) and cover the entire visible eye, including the white part. Regular contacts only cover the iris and are about 14mm. This gives sclera lenses their full-eye effect.
Are sclera lenses safe to wear?
Yes, when used correctly. Always follow hygiene rules: wash hands, use fresh solution, and never share lenses. Because they cover more of the eye, ensure the lens is clean and free of debris before insertion. Remove if you experience persistent discomfort or redness. Always have a backup pair and remove lenses immediately if you feel pain or see redness.
How long can I wear sclera lenses?
They are designed for occasional use, not daily wear. Start with 2-3 hours to adapt, and never exceed 6-8 hours (or the manufacturer's recommendation). Remove them before sleeping, swimming, or showering. Set a timer on your phone to remind you to remove them after the recommended time.
Can I get prescription sclera lenses?
Some sclera lenses, like the 22mm Red Ghoul, are available with prescription options. Check the product page for availability. If you need vision correction, choose those options rather than wearing lenses over your glasses. If you need prescription, select that option at checkout; don't try to wear lenses without correction.
How do I choose between 17mm and 22mm?
Consider your character and comfort. 17mm gives a dramatic look with a small rim of white, which is more natural and easier to wear. 22mm gives full coverage for a completely transformed eye, but it may feel more intrusive and requires more practice to insert and remove. If you're new to sclera lenses, start with 17mm to get used to the feel before trying 22mm.
Lens Options to Consider
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22mm Red Ghoul (Tokyo Ghoul): 22mm diameter with a base curve of 11mm, made from hydrogel with 40% water content, and available with prescription options. This full-coverage size is ideal for a complete eye transformation, but the larger diameter means a longer adaptation period and a need for careful handling.
22mm Red Ghoul (Tokyo Ghoul)
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17mm Tokyo N Violet: 17mm diameter with a base curve of 10mm, also hydrogel with 40% water content. A slightly smaller size that still gives a dramatic effect while being more comfortable for first-time sclera wearers.
17mm Tokyo N Violet
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17mm Green Devil: 17mm diameter with a base curve of 10mm, hydrogel with 40% water content. Another 17mm option that balances coverage and comfort, making it a good middle ground for costume use.
