If you or your family members have the following symptoms, you must go to the hospital in time for examination and treatment, do not delay, the later the cataract is found the more difficult it is to treat.
Some elderly people usually need to wear presbyopic glasses to read books and newspapers, but they suddenly find that they don’t need to wear presbyopic glasses to see clearly, and some of them are very happy.
2. Blurred vision Blurred vision, gradual blurring of vision, sometimes feeling that there is an aperture around the light as well as the color of objects is not bright enough. If cataract patients are driving at night, they may feel discomfort or irritation because the headlights of cars coming from the opposite direction are too blinding. However, in general, the development of early cataract symptoms is quite slow and depends on the location of the most cloudy lens and its development.
At the early stage of cataract, the partial clouding of the lens is located in the pupil area, and a dotted or lamellar shadow with fixed position and constant shape can appear in front of the eyes. It is different from the flying mosquito caused by vitreous opacity, the dark shadow of the latter is movable, although the range of activity is not large, but it is sometimes faint and variable in shape.
4, color vision abnormalities color vision abnormalities, cataract at the beginning due to the lens absorbing more water and swelling, its epithelial cell gap increased and filled with particulate water droplets, light through it will be refracted and present colored halo, commonly known as iridescence.
Day blindness or night blindness If the lens clouding starts in the central part first, when the light is strong and the pupil is narrowed during the day, the light is blocked from entering the eye, thus day blindness appears; if the lens clouding is located in the peripheral part, the dark light is blocked from entering the retina in the equatorial part at night, and the rod-shaped optic cells in the equatorial part of the retina are specialized in liquid vision, thus liquid blindness appears, which is also one of the early symptoms of cataract.