What are the symptoms of radiation cataract?

summary

There will be clear evidence that radiation-induced cataract is called radiation-induced cataract. The epithelial cells under the equatorial lens capsule are very sensitive to ionizing radiation. The injured epithelial cells can produce granular material, which migrates from the periphery to the center under the capsule, especially in the posterior pole. What are the symptoms of radiation cataract? Next, I'd like to share my views with you.

What are the symptoms of radiation cataract?

At the beginning of the first stage, a few powdery opacities appeared in the subcapsular cortex of the posterior pole of the lens. There were small vacuoles in the posterior subcapsular cortex. There is no visual impairment at this stage.

In the second stage, after a period of time, the turbid spots gradually increased and accumulated to form a ring. When the turbid area expanded to 1-2mm in diameter, there were bubbles and particles around it. After that, the turbidity expanded into disc-shaped turbidity with a diameter of 3-4mm.

In the third stage, the time is longer, and the posterior subcapsular opacity is more, gradually forming discoid shape, irregular shape, sometimes in the form of several overlapping layers. At the same time, a wedge-shaped opacity extending from the equator to the center occurred in the lens cortex. Sometimes this kind of turbidity from the periphery appears earlier than that from the central part, and the peripheral turbidity is often yellowish brown.

matters needing attention

Radiation cataract is the result of some kind of radiation directly acting on the lens, so medical personnel must take preventive measures to make the external radiation dose not exceed the national protection standard. In addition, in order to prevent lens from being damaged by radiation, radiation workers should wear lead protective glasses.