When about to place the lens on the eye, make sure the lens sits up on the placement finger. The finger should be dry so surface tension does not cause the lens to adhere to the finger.
Check to see that the lens is right side out. A lens that is placed on the eye inside out may not feel comfortable or provide good vision.
Method 1:
One way to do this is to perform the 'taco test' by placing the lens between your thumb and index finger and squeeze the edges together gently.
If the edges come together, the lens is right side out.
If the edges turn outward, the lens is wrong side out. Carefully reverse it with your fingers.
Method 2:
Another way is to place the lens on the tip of your index finger and check its shape.
If the edge appears bowl-shaped, it is right side out.
If the edge has a lip or flares outward, it is wrong side out and must be reversed.
