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How to distinguish the front and back of contact lenses? What should novices pay attention to when w

For some people who just wear contact lenses, it is difficult to distinguish the front and back of the contact lenses, so do you know how to distinguish them?

Distinguish the front and back of the lens correctly:

(1) observation method: the front side is in bowl shape and the back side is in disc shape. If the lens is worn reversely, it will have foreign body feeling, and the lens will slide indefinitely in the eye, which will also affect the visual clarity.

(2) clamping method: use thumb and index finger to flatten the middle part of the lens. If it is the front side, the lens shall be curled inward, if it is turned to the two outer sides, it is the reverse side.

How to wear contact lenses

1. Place the lens on the fingertip of the index finger, look at the mirror in front of the eyes, open the upper and lower eyelids with the middle finger of both hands to completely expose the cornea (black eyeball), attach the lens to the cornea, and then remove the index finger.

2. Move the eyeball up, down, left and right, and flush out the air in the lens with tears. After the lens is completely attached to the cornea, loosen the upper and lower eyelids slowly.

Preparation before wearing

1. Wash your hands with neutral soap, and do not leave anything on your hands, so as not to contaminate the lenses.

2. The fingernails of index finger and thumb shall be cut and polished in advance to avoid damaging eyes and lenses.

3. Confirm and distinguish the left eye lens and the right eye lens, which are not interchangeable.

4. Wash the lens with full-function care solution and check whether the lens is damaged.