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What are the early symptoms of cataracts

Posting time:2022-10-06 02:45:57

What are the early symptoms of cataracts

1. The phenomenon of blurred vision The early symptoms of cataract will appear vision loss, blurred vision and other phenomena. Ophthalmologists say that patients sometimes feel that there is always a halo around the light, and the objects that can be seen are darker in the light. 2. Blurred vision The initial symptoms of cataract: blurred vision, blurred vision gradually, and sometimes feel that there is a circle around the light and the color of the object is not bright enough. If you drive at night, you will feel uncomfortable or irritable because the headlights of the oncoming car are too dazzling. In general, however, the progression of symptoms is rather slow and depends on where the lens is most opacified and how it develops. 3. Abnormal color vision The initial symptoms of cataract: abnormal color vision. In the early stage of cataract, the lens swells due to the absorption of water, and the epithelial cell space enlarges and is filled with microscopic water droplets. Commonly known as Rainbow Vision. 4. The initial symptoms of day or night blindness cataract: day or night blindness, if the lens opacity starts in the central part first, when the light intensity and pupil dilate during the day, the light entering the eye is blocked, so day blindness occurs; if the lens opacity is located in the periphery At night, the dark light entering the equatorial retina is blocked, and the rod-shaped cells of the equatorial retina are specialized for night vision, so night blindness occurs. 5. The initial symptoms of anterior shadow cataract: Anterior shadow, in the early stage of cataract, part of the opacity of the lens is located in the pupil area, and there can be dotted or flake shadows with fixed position and constant shape in front of the eyes. It is different from the floaters caused by vitreous opacity. The shadow of the latter is movable. Although the scope of activity is not large, it appears and disappears from time to time, and its shape is changeable. 6. Relief of presbyopia Some elderly people usually need to wear presbyopic glasses to read books and newspapers, but suddenly they find that they can see clearly without wearing presbyopic glasses. Some elderly people are very happy. This is because when the senile cataract first occurs, the convexity of the lens increases and the refractive near point changes, which is one of the early symptoms of cataract. 7. When there are shadows in front of the eyes, or there are double or multiple shadows, you should determine that you have the early symptoms of cataract at the first time, and go to a large professional eye hospital for inspection and treatment in time. Part of the opacity of the lens is located in the pupil area, and a spot or sheet shadow with a fixed position and constant shape may appear in front of the eye. It is different from the floaters caused by vitreous opacity. The shadow of the latter is movable. Although the scope of activity is not large, it appears and disappears from time to time, and its shape is changeable. 8. Rainbow Vision When you feel that your color vision is abnormal, it may be an early symptom of cataract. 9. Monocular polyvision The initial symptoms of cataract: monocular polyvision. In the early stage of cataract, the lens is partly opaque and partly transparent, and the image of light projected on the retina through it will produce double or multiple shadows. 10. Eyes are afraid of light. Under bright light, many cataract patients have worse vision in bright light. This is caused by the narrowing of the pupil and the narrowing of the light channel of the eye. People who suffer from glaucoma and this disease at the same time will have a significant decrease in vision due to the pupillary constriction after instillation of miotic medicine.

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