Near Vision Problem(Presbyopia)

Presbyopia is a near-sightedness problem that affects people over the age of 40. The structure of the lens in our eyes can change shape. When objects get close enough, this lens swells, changing its shape and improving vision quality. This is how close vision works. After the age of 40, the human eye gradually loses this ability. 

Why Does Presbyopia Occur?
When a faraway object approaches, the brain evaluates the stimulus and sends it to the eye. The fibres connected to the "ciliary body" of the eye are stretched or loosened as the muscles in it contract and relax. The lens becomes thinner or thicker as the fibres move around, increasing its refractive power. With age, the eye loses its ability to do so. The cell ageing theory is the closest explanation for the age-related loss of this ability, though it hasn't been proven conclusively. According to this theory, as our hair turns white with age, our eye cells lose this ability. As a result, the issue is viewed as physiological ageing rather than a pathological issue.

Presbyopia develops in a predictable pattern in everyone over time. It increases by +1 every 10 years after the age of 40. It will be +2 at the age of 50, and it will be +3 at the age of 60. However, there is a unique situation here. If our eye is -2, for example, at the age of 40, a +1 is added to it. To see up close in this case, you'll need the number -1. While a -2 number is required for distance, there is no need for near glasses once you reach the age of 50. As a result, being near-sighted and saying, "I can see up close very well," is a valid statement. The patients who claim to be able to see the nears well do so because the two disorders overlap and have a defect-reducing effect.

What Are the Symptoms of Presbyopia?
When objects are brought closer than 50 cm, presbyopia patients have difficulty seeing. As a result, they can see objects that are far away from their eyes.

How Is Presbyopia Treated?
Intraocular multifocal lens operations, presbylasik laser, and corneal inlay, namely Kamra, are among the methods used around the world to treat presbyopia.