The method of distinguishing the front and back of contact lenses is as follows:

Method 1: When taking out the contact lenses, do not damage the front and back of the contact lenses, just put them into care according to the shape they were taken out. In the solution, contact lens experts have found that when the lenses are soaked in the care solution for a period of time, they will slowly curl up into the front side, and rarely the back side.

Method 2: Place the contact lens gently on the belly of the index finger of your right hand, with the lowest point touching the belly of the finger, and let the surrounding sides rise naturally. If it is positive, then when viewed from the side, the lens is "U" shaped, with the top edge slightly buckled inward. This smooth curvature indicates that the contact lens is now placed frontally. If it is reversed, it will look like an inverted straw hat from the side, that is, the top edge is turned outwards, like the brim of a straw hat.

Method 3: Try it yourself. If you feel uncomfortable after wearing it, it means you have worn it backwards. I would like to remind the majority of contact lens wearers that the first time you wear contact lenses should not exceed 8 hours. If Slight dryness, photophobia, short-term blurred near vision, foreign body sensation, and enlargement or shrinkage of vision. As long as the situation is not serious and the duration is short, it is a normal physiological reaction. Generally, the symptoms will disappear after a short adaptation period. will disappear naturally.

Introduction to contact lenses:

Contact lenses, also called contact lenses, are worn on the cornea of ??the eye to correct vision. Or lenses to protect your eyes, contact lenses are contact lenses.

According to the softness and hardness of the material, it includes three types: hard, semi-hard and soft. Contact lenses not only bring great improvements to patients with refractive errors such as myopia, hyperopia, astigmatism, etc. in terms of appearance and convenience. It also has a wide field of vision and realistic vision. In addition, it also plays a special role in controlling the development of myopia and astigmatism in teenagers and treating special eye diseases.