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A female asked:
Dr. Pierrette Mimi Poinsett
38 years experience Pediatrics
20/200: 20/200 is the criteria for legal blindness

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A 33-year-old member asked:
Dr. Ray Oyakawa
45 years experience Ophthalmology
Depends: Blindness is a general term. Legal blindness is a snellen visual acuity of less than 20/200 best corrected or a very small visual field. This is th ... Read More
1
1 comment
A 34-year-old member asked:
Dr. Richard Bensinger
52 years experience Ophthalmology
Yes: Color blindness (we call it deficiency) occurs in a variety of patterns with some having absolute inability to make some color discriminations and oth ... Read More
A 34-year-old member asked:
Dr. Damien Luviano
18 years experience Ophthalmology
Errors, Infections: Sight is one of the most valued traits humans hold close to their hearts. Some newborns are born blind, because of genetic errors of metabolisms un ... Read More
1
1 thank
A 34-year-old member asked:
Dr. Fred Orlando
36 years experience Ophthalmology
Yes, but it's rare: Vision starts at the front of the eye and ends at the back of the brain. Trauma anywhere along the way can cause vision loss. Obviously if one lands o ... Read More
2
2 thanks
A 47-year-old member asked:
Dr. William Goldstein
31 years experience Ophthalmology
Experience!: It takes time and practice. Blind people become expert at memorizing their surroundings so that they know, for instance, how many steps from the bed t ... Read More
4
4 thanks
A 38-year-old member asked:
Dr. Richard Bensinger
52 years experience Ophthalmology
Proper match: Guide dogs are wonderful when there is a good rapport between the dog and the blind person. Obviously the blind person must be mobile, and have the a ... Read More
A 46-year-old member asked:
Dr. Pierre Guibor
55 years experience Ophthalmology
Blindness: Self induced blindness is very rare and may be associated with mental illness. Pressure on the eyes can result in central retinal artery occlusion. ... Read More
1
1 thank
A 46-year-old member asked:
Dr. Tim Conrad
34 years experience Ophthalmology
Can't tell colors: Most people with color-blindness have little doubt about it. These men (color-blindness is rare in woman) cannot distinguish many colors that other p ... Read More
A 39-year-old member asked:
Dr. Todd Purkiss
17 years experience Ophthalmology
Testing: The most common type of "color blindness" is red-green color deficiency. Blue-yellow deficiency or true color blindness (achromatopsia) are rare. Colo ... Read More
1
1 thank

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