As the aging population continues to increase, the incidence of cataracts is becoming more prevalent. Cataracts should be treated early, so how to detect cataracts early?
1. Decline This is the most obvious and important manifestation of cataract. In the early stage of cataract, the clouding only occurs in a part of the crystal, which has no effect on vision, but with the development of the disease, the scope of crystal clouding is expanding and the degree of clouding is increasing, and vision will be gradually damaged. When the middle-aged and elderly people have asymptomatic vision loss, they should go to the hospital in time.
2. Decreased contrast sensitivity In common parlance, many patients with early cataract have no obvious change in vision, but they feel that their vision is blurred, their borders are indistinguishable, or the colors of objects have changed: colors are not as vivid, contrast is not strong, black and white are not distinguishable, etc. With the development of cataract, this phenomenon will also be aggravated.
3. Refractive changes Patients with cataracts can also experience an increase in the astigmatism of the eyes, a decrease in presbyopia, myopia, etc. A typical phenomenon is that some elderly people can thread the needle without presbyopic glasses although they see far and blurred, so they think their vision is okay and delay the diagnosis and treatment.
4. Monocular diplopia or hyperopia When one eye is blindfolded and the other eye is used for viewing, double vision, double shadows, or multiple shadows appear.
5.Glare caused by light scattering due to cataract.
6. Altered color vision A cloudy cataract can change the color vision of the eye, and in general, senile cataracts can cause objects to be slightly yellowish in color.
7. Visual field defects This is not a phenomenon unique to cataracts. Any case of visual field defects should be promptly seen. Possible causes include cataracts, glaucoma, retinopathy, optic neuropathy, intracranial lesions, etc.
Warm tips These symptoms suggest the possible occurrence of cataracts, and middle-aged and elderly people should seek medical attention promptly if they experience the above symptoms.