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Cataracts can arise as an effect of exposure to various types of radiation. X-rays, one form of ionizing radiation, may damage the DNA of lens cells. [21] Ultraviolet light, specifically UVB, has also been shown to cause cataracts, and some evidence indicates sunglasses worn at an early age can slow its development in later life. [22]
In an effort to understand the cause of cataracts—beyond the normal wear-and-tear of aging, smoking, and exposure to UV rays, all of which can damage a lens’ fiber cells—researchers are ...
Cataracts: Cloudiness over the eye's lens, cause blurring of vision, halos around lights, and sensitivity to glare. [5] It is also the main cause of blindness worldwide. [2] Glaucoma: Increased intraocular pressure (pressure in the eye) cause progressive optic neuropathy that leads to optic nerve damage, visual field defects and blindness. [6]
Eye injuries, most often occurring in people under 30, are the leading cause of monocular blindness (vision loss in one eye) throughout the United States. Injuries and cataracts affect the eye itself, while abnormalities such as optic nerve hypoplasia affect the nerve bundle that sends signals from the eye to the back of the brain, which can ...
This may occur in the event of posterior capsule rupture, zonular dehiscence, [Note 8] a dropped nucleus [Note 9] with a nuclear fragment more than half the size of the cataract, [14] problematic capsulorhexis with a hard cataract, [14] or a very dense cataract where the heat developed by phacoemulsification is likely to cause permanent damage ...
When the eye is dilated, the pupils widen so that the ophthalmologist can see the back of the eye more clearly. The ophthalmologist will look for signs of cataracts, glaucoma, and will examine the retina and optic nerve. During this comprehensive eye exam, a refraction and visual acuity test will also be performed. These tests assess the ...
The optic nerve can be at very high risk for damage from insufficient blood supply due to swelling (from lack of oxygen) in a confined bony space resulting in a compartment syndrome. Restricted blood flow can lead to permanent damage to the optic nerve and result in blindness (often in both eyes).
In rare cases, the infection can enter the brain and cause death to the patient. In cases of globe penetration, pressure patches should never be applied, and instead a shield patch should be applied that protects the eye without applying any pressure. If a shield patch is applied to one eye, the other eye should also be patched due to eye movement.
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