Finding if your contacts are inside out is a common problem among contact lens wearers especially for the first time users. With soft contacts, they are very thin that is why it can be really hard to tell whether they are inside out or not.
Here are some ways to help you distinguish if you are wearing the correct side of your contacts to prevent discomfort.
Using the Side View Test - Put the contact lens on the tip of your index finger so 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.
The contacts should form a perfect cup shape with the edge perfectly upright, if the contacts are oriented like this, the lens is ready to be placed in your eyes. If the contacts forms like an outward bowl, the contacts are inside out.
Another way of telling whether your contacts are inside out is through the Taco Test. Place the contacts between the tips of your thumb and forefinger, grasping it near the center 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.
Checking the Edge Tint - If you wear contacts that have a handling tint that extends to the edge of the lens, places the lens on your fingertip (as in Method 1 above), and looks down at its edge from above.
If the color of the handling tint on the lens edge looks very blue (or green, depending on the tint), the lens is correctly oriented. If the color looks pale or washed out, the lens probably is inside out.
Don't worry — you won't harm your eye or your contact lens if you put it on inside out.
In most cases, you'll be able to tell almost immediately if a contact lens is inside out. Typically, the lens will feel uncomfortable and will move too much when you blink. It also may move off the center of your eye or pop out.
If you feel any discomfort, just remove the contacts from your eyes, rinse it with your contacts solution and follow any of the methods that work for you best before putting them back again.