Presbyopia is a physiological decline in visual accommodation. Different from ophthalmic diseases such as advanced vision and hyperopia, presbyopia is not a pathological change, nor does it have organic lesions of the ocular organs.
The main cause of presbyopia is that the elasticity of the eye lens decreases, the hardness increases, and the function of the ciliary muscle weakens as the age increases, which weakens the eye's ability to accommodate and causes difficulty in near vision.
Generally, presbyopia begins to appear gradually after the age of 40 or 45. If your eyes are tired when you look near, and you often squint your eyes hard to see, you need to have an optometry in time, and choose the right reading glasses according to your vision condition and eye condition.
But in daily life, quite a number of middle-aged and elderly people prefer to squint their eyes, lift their heads, stretch their arms and take them away, rather than wear reading glasses, when reading books or mobile phones. Why?
Once you put on your reading glasses, you can't take them off?
Some people believe that reading glasses cannot be worn easily, that once they are put on, they cannot be taken off, and the deeper they are worn, the deeper they become. This is actually one less control, that is, what happens to patients who don't wear glasses?
Because visual blurring itself will speed up the progression of presbyopia, so middle-aged and elderly people with presbyopia do not wear glasses, and the rate of increase in presbyopia will be even faster.
For example, some people are presbyopic at 250 degrees and still do not want to wear glasses.
According to the super vision consultant, middle-aged and elderly people with presbyopia do not wear glasses for a long time, or use the wrong correction method, which will lead to more serious results.
First of all, poor eyesight in life, can't see close things clearly, affects the quality of life, and is easy to bump into things;
Secondly, the deepening speed of presbyopia is not slower than that of people who wear glasses to correct, and even faster;
The third is the loss of the adjustment function of the lens. Once wearing glasses, you may not be able to see far or near. Because of not wearing glasses for a long time, the adjustment function of the lens is completely lost. After correction, it is clear that the distance is seen, and the near view is often manifested as a "blind eye" state.
