It can be difficult to tell if your soft contact lenses are inside out, because they are extremely thin and very pliable. Even experienced contact lens wearers have trouble with it.

Here are ways to tell if your contact is inside out:

Method 1: The Side View

Place the contact lens on the tip of your index finger so the edge of the lens is pointing up. Then hold your finger up directly in front of your eyes so you can look at the lens from the side.

If your contact forms a perfect cup-shape with the edge perfectly upright, the lens is correctly oriented and is ready to be placed on your eye. If the edge has a noticeable outward bend (like a rimmed soup bowl), the contact is inside out.

Method 2: The "Taco Test"

Place the contact lens between the tips of your thumb and forefinger, grasping it near the centre so the entire edge is free. Gently squeeze the lens, as if you are about to fold it in half.

If the edge of the lens points upward (resembling a hard-shell taco), the lens is correctly oriented. If the edge bends outward (toward your thumb and finger), the lens is inside out.