What are the common causes of vision loss?

Several. The most common cause of reversible blindness worldwide is cataract. The most common cause of permanent vision loss is glaucoma. Diabetic retinopathy is another leading cause of blindness. Corneal scars, especially cuased by diseases such as trachoma, are a major problem in the developing world.
Vision loss. This is a huge list of diagnoses. Any disease that affects the cornea all the way through to the occipital lobes of the brain can cause vision loss. Most commonly, it include things such as prescription changes, cataracts, glaucoma, and macular degeneration. Hope that helps.
Vision loss. Vision loss can be due to many things: most common is need for new glasses. If still not correctable vision: can be due to cataracts, glaucoma, macular degeneration, blood vessel issues. Many other possibilities as welll: Brain lesions, medications, trauma, infection, cancer. Patient should be checked by eyeMD. .

Related Questions

What are the common causes of temporary loss of vision?

There are no common. Temporary loss of vision can be caused by low blood pressure, certain infections and inflammatory processes, concussions, and many other conditions. Knowing the type of vision loss (dark vision vs. Blurred vision) is helpful. Read more...
No one best answer. Temporary loss my be innocuous. Blurred vision from dryness, wrong glasses, medication side effects are temporary but so are many other more serious conditions that may lead to sudden and maybe permanent loss. Mini strokes to the eye or brain, intermittent glaucoma attacks, optic neuritis, small hemorrhages in the eye (diabetics) to name a few. See your eye md asap. Read more...

What are the common causes of sudden loss of vision in the lower half of one eye?

Vascular, detachment. Loss of vision horizontally and only in one eye suddenly usually means a stroke of the eye where one branch of the retinal vessels is blocked. Due to the vascular anatomy this makes a horizontal line. Occasionally a superior or inferior retinal detachment can cause similar vision loss but this is usually slower and progressive. Read more...
Optic neuropathy . This is a classic symptom of ischemic optic neuropathy although it usually occurs in the upper visual fields . Other possibilities include retinal detachments , arterial occlusions of the retina, infections, and autoimmune disease of the retinal vascular system. The list is extensive and this just names a few . Read more...