Put the contact on your index finger with the edge pointed up and examine the lens from the side.

How to know if a contact lens is inside out. The first is to examine the lens from the side. An optometrist explaining the best way to tell if your contacts are inside out or the correct way around. If your contact lenses resemble the lens on the right, they are most likely inside out.

Hold the lens in the centre, firmly between your. If the edges curve outward, then the contact is inside out. Usually, this will take the form of a sequence of numbers and/or letters.

There are two easy ways to tell if your contact lens is inside out, look at the shape of the contact lens, it should have smooth edges like a well turned bowl, or squeeze the lens. Once you see your lenses. Place your lens on the tip of your finger.

Leave enough space for the contact lens edges to move and gently squeeze the lens edges towards each other. Inspect the contact lens from the side. If it looks like a mixing bowl (edges pointing straight up) you’re good to go.

The lens should look like a half circle, and if it looks like it has more of a peak in its shape then it's inside out. Yes—and it matters more the higher your prescription is. Simply place the lens between your thumb and forefinger.

The taco test is another way to tell whether your contact lens is inside out. If it bends outwards towards your finger and thumb, then the lens is inside out. Place the lens between your forefinger and thumb.