2006-10-23 07:25:59 · 12 answers · asked by Greg V 1 in Health ➔ Other - Health
Partial sight
From 3/60 to 6/60 with a full field
Up to 6/24 with moderate restriction of visual field, opacities in the media or aphakia
6/18 or better with a gross field defect (e.g. hemianiopia) or a marked constriction of the field (e.g. glaucoma or retinitis pigmentosa
The most common cause of gradual onset bilateral blindness in the developed world is macular degeneration. Diabetic retinopathy is the second most common cause. Other causes include:
Diabetic maculopathy
Hypertensive retinopathy
Cataracts
Chronic glaucoma
Chiasmal or bilateral optic nerve compression
Bilateral optic nerve damage, e.g. tobacco amblyopia
Worldwide, chlamydial infection causing trachoma is a common cause.
2006-10-23 07:29:37 · answer #1 · answered by dandyl 7 · 4⤊ 0⤋
When you're not completely blind.
As quoted:
Blindness is the loss of vision, not correctable with lenses. Blindness can be partial, with loss of only part of the vision. It can also be complete, in which case there is no perception of light. People with vision worse than 20/200 or a field of vision of less than 20 degrees in the better eye are considered legally blind.
2006-10-23 07:26:42 · answer #2 · answered by Corn_Flake 6 · 2⤊ 0⤋
Partial Blindness is when you are considered blind but you can see a little. Things you can see are like shadows or outlines of figures.
2006-10-23 07:28:10 · answer #3 · answered by not_urs_but_definitely_his 1 · 0⤊ 0⤋
Sudden visual loss is a common complaint among patients of different ages with variable presentations. Some patients describe it as a gray-black curtain that gradually descends, blurring, fogging, or dimming vision. It usually lasts a few minutes but can persist for hours. The frequency varies from a single episode to many during a day; it may continue for years but more often lasts for seconds to hours. Ischemia is the most common mechanism of acute visual dysfunction and it can affect any aspect of the visual system.
Multiple conditions are associated with transient visual loss. They can be classified according to origin or pathogenesis, but for the purpose of this article they will be outlined by source.
Type 1 is characterized by loss of all or a portion of vision in one eye, lasting seconds to minutes, with full recovery. It is usually secondary to an embolic phenomenon. The attacks have been related to an ICA origin associated with ulceration but not critical narrowing.
Type 2 includes visual loss due to hemodynamically significant, occlusive, low-flow lesions in the ICAs or ophthalmic arteries. Symptoms are more frequent, less rapid in onset, and longer in duration than type 1 attacks, with gradual vision recovery.
Type 3 is thought to be due to vasoconstriction or vasospasm.
2006-10-23 07:30:32 · answer #4 · answered by shriharshb 2 · 1⤊ 0⤋
A person experiencing blindness at certain times of the day.
2006-10-23 07:27:52 · answer #5 · answered by D.J 5 · 0⤊ 0⤋
Can't people with loss of vision in one eye drive? Isn't that considered "partial blindness?" I think so, but I'm no expert.
2016-05-22 01:42:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Palatial lose of sight.....
People who have partial blindness, are classified (legal)blind...for insurance purposes..They usually have a level of sight like 70%
2006-10-23 07:29:33 · answer #7 · answered by Diamond in the Rough 6 · 0⤊ 0⤋
When you are blind in one eye and cannot see out of the other.
2006-10-23 07:34:11 · answer #8 · answered by mike h 1 · 0⤊ 0⤋
anything in betwen full regular sight, and being 100% blind!
2006-10-23 07:27:37 · answer #9 · answered by matthew.armstrong 2 · 0⤊ 0⤋
only when you can se alittle bit but not alot
2006-10-23 07:33:27 · answer #10 · answered by Keyla P 1 · 0⤊ 0⤋