: How can I tell if a soft contact lens is inside out? Soft contact lenses can be turned inside out. It then becomes difficult to know which is the right way around. This is especially a problem when I have put contact lenses

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There are a few ways to check that, allaboutvision.com has some great information on various ways to check the orientation of a contact lens:

Method 1: The Side View

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 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.

Method 3: Check The Edge Tint

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.

Method 4: Look For Laser Markings

Some contact lenses have a laser marking to help you determine if your
contact is inside out. For example, one brand has a "123" laser
marking near the edge of the lens.

If the "123" appears normally, the lens is correctly oriented and
ready to be placed on your eye. If the "123" is backward, the contact
is inside out. If at first you don't see the laser marking, turn the
lens on your fingertip to make sure you check its entire surface.

Source: www.allaboutvision.com/contacts/faq/inside-out.htm