What kind of picture is cataract?

Update Date: 2023-09-20 Source: Network

summary

All kinds of reasons, such as aging, genetic, local nutritional disorders, immune and metabolic abnormalities, trauma, poisoning, radiation, etc., can cause lens metabolic disorders, leading to lens protein degeneration and turbidity, which is called cataract. At this time, light is blocked by the turbid lens and cannot be projected on the retina, resulting in blurred vision. It is more common in people over 40 years of age, and the incidence rate increases with age. What kind of picture is cataract? Let's talk about it

What kind of picture is cataract?

Unilateral or bilateral, the onset of two eyes may have a sequence, visual acuity progressive decline, due to the lens cortex turbidity led to different parts of the lens refractive power, there may be glare, or monocular diplopia, myopia increased,

The opacity of lens began to increase in density from the center of the lens, i.e. the nucleus of embryo, and gradually aggravated and slowly extended to the periphery. In the early stage, it was light yellow. With the aggravation of the opacity, the color gradually deepened, such as dark yellow and dark brown yellow. The density of nucleus increased and the refractive index increased,

Patients often complain of reduced presbyopia or increased myopia, early peripheral cortex is still transparent, therefore, in the dark pupil dilation, visual acuity improved, but in the strong light pupil narrowing, visual acuity decreased, so generally do not wait for the cortex completely turbid immediately surgery.

matters needing attention

Phacoemulsification is a new type of cataract surgery at home and abroad in recent years. The nucleus of lens was smashed into chylous shape by ultrasound, and then aspirated together with the cortex. After the operation, the posterior capsule of lens was preserved, and the chamber intraocular lens could be implanted at the same time. When the vision of senile cataract is less than 0.3, or the degree and position of cataract significantly affect or interfere with the visual function, patients hope to have good visual quality, that is, phacoemulsification cataract extraction is feasible. It has the advantages of small incision, less tissue damage, short operation time and quick recovery of vision.