Can astigmatism cause iridescence

Update Date: 2023-01-27 Source: Network

summary

For students, if they are always sitting in the classroom and looking at the blackboard, if they are not lucky, they may sit on the seat with more reflection, so that they will not see the blackboard clearly. If they do so for a long time, astigmatism will appear. Let's talk about whether astigmatism can cause iridescence.

Can astigmatism cause iridescence

First: astigmatism is a kind of abnormal refraction of the eye, which is related to the curvature of the cornea. Some people's corneas are curved at one angle, while others are flat. Astigmatism is caused by the uneven thickness of the cornea or the uneven curvature of the cornea, which makes the refractive rate of the meridians of the cornea inconsistent, so that the light passing through these meridians can not focus on the same focus, and the light can not accurately focus on the retina to form a clear image, which is called astigmatism.

Second: rainbow when a person is looking at the light, if there is a color halo around the light, it is called "Rainbow" in medicine. The so-called color halo is the color halo and so on In front of my eyes, there is iridescence, which is due to the change of the refractive index of the eyeball. The white light from the front is decomposed into a variety of color components according to the different wavelengths of the light contained in it, thus a typical color halo appears.

Third: conjunctivitis, keratitis, uveitis, cataract, glaucoma, astigmatism opportunities. Iridescence is a kind of visual phenomenon, which is mainly caused by corneal edema caused by elevated intraocular pressure, secretion adhesion on the surface of conjunctivitis cornea, and tears covering the anterior surface of cornea.

matters needing attention

Therefore, for many students, not only myopia, but also astigmatism will appear. For astigmatism, if it goes on in the long run, it may cause more serious symptoms, so patients should pay attention to be able to go to timely treatment when astigmatism just appears.