Presbyopic lenses solve the problem of being unable to see objects clearly at close range and utilize the converging effect of convex lenses to cause the light emitted by nearby objects to converge and be imaged on the retina through the lens. At present, wearing reading glasses is a better way to solve presbyopia.

However, by looking at objects like this for a long time, there will be only one focal point, and the eyeball will only adapt to this focal point, unable to autofocus, which can cause significant damage to the eyeball. So there are progressive multifocal reading glasses, gradually replacing the use of ordinary reading glasses, and the fitting of reading glasses also requires going to the hospital for optometry to seek the best visual field effect.

Presbyopia glasses are mainly designed to meet the needs of people with presbyopia. Presbyopia is a normal physiological phenomenon, not an eye disease, nor does it occur in elderly individuals. As the lens of the human eye gradually hardens and the ciliary muscles become paralyzed, the eye cannot effectively adjust the shape of the eyeball (axial changes). It can only be seen by adjusting the distance between the eye and the object it is looking at. When looking at objects in close proximity, it is necessary to move away to see them clearly. At this time, the eye state is called presbyopia.

If presbyopia wants to use its vision at the distance it used to be, it is necessary to wear presbyopic glasses for visual supplementation in order to regain close and clear vision. Presbyopic glasses are the second pair of eyes for everyone after entering middle age, playing an indispensable role in improving people's quality of life.