Whether you are a new contact lens wearer or you have been using them for years to correct your vision, you may be wondering how can you tell if a contact lens is inside out. If you suspect you may be wearing your contact lenses incorrectly or they just feel uncomfortable, here are some ways you can determine this to avoid the problem in the future.
Look at the Lens
Before placing the lens in your eye, hold it on the tip of your index finger and look at it carefully from the side. Is it shaped like the letter "U" or it is flared on the sides, like a soup bowl? The correct shape of a soft contact lens should be like the letter "U". If it's shaped like a soup bowl, then it's inside out. Some people also recommend the "taco test" whereby you gently squeeze the lens so that the edges touch. If they touch completely, then the lens is right side out. If the edges flare out and don't touch fully, then it's inside out. Simply flip the lens around and it will be positioned correctly for wearing.
Another way to determine if your contact lens is right side out is to look at it from the top. This is especially important if you are wearing the colored enhanced type. The edge of a tinted lens will be look very blue. If it looks greenish, then it is inverted and you should carefully flip the lens around in order to wear it properly.
Find the Engraving
Some contact lenses have factory engraving on them, done by special lasers. This can include the manufacturer information, model number, brand name or grade of materials used. While this is not detected by the human eye when wearing, it can be of help when trying to determine if you are wearing your contact lenses correctly. Some brands have a "1-2-3" engraved on them, so you would make sure this is the side facing downwards on your finger as you place the contact into your eye. If you can read this label, then the lens is inside out. You can remove it safely without damaging your eyes and flip it around for replacement.
Ask the Professional
Of course, please check with your eye doctor if you experience any discomfort with your contact lenses. They can often help you more with this perplexing problem or demonstrate to you further what to do. Common sense should tell you if you are wearing your contact lens incorrectly. If they feel uncomfortable or you feel slight pressure on your eyes, it's probably because you have placed the lenses incorrectly on your eyes. You may want to practice a little when first getting a new set of contact lenses to see what works best for you and to get used to the feel of them. Once you do, you should enjoy months of enjoyable experience with your new lenses.
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