Legal Blindness Visual Acuity Standard
Legal blindness is a specific term used in legal and educational contexts, not a medical diagnosis of total blindness.
It is defined based on standardized visual acuity measurements:
- Visual Acuity: The level of detail the eye can discern. It's measured using the Snellen chart, where a fraction represents the distance at which a person can read a line compared to a person with normal vision.
- Legal Blindness Criterion: An individual is considered legally blind if their best-corrected visual acuity is 20/200 (or less) in the better-seeing eye. This means they would need to be 20 feet away to see what a person with normal vision can see at 200 feet.
- Field of Vision: Legal blindness can also be diagnosed if the person's visual field (peripheral vision) is significantly constricted to 20 degrees or less, even if their visual acuity is better than 20/200.
Therefore, the threshold for visual acuity defining legal blindness is $\frac{20}{200}$.
Important Questions from Disability
Match List I with List II
List I
(Learner's Disabilities)
List II
(Primary Dimension)
A.
Orthopedically and other Health impairement
I.
Intelligence
B.
Learning Disabled
II.
Movement
C.
Mentally Retarded
III.
Intellectual
D.
Gifted
IV.
Perceptual, Motor, Communications
Choose the correct answer from the options given below:
DISHA is a scheme of early intervention for which specified Disabilities?
A. Autism
B. ADHD
C. Cerebral Palsy
D. MR
E. Multiple Disabilities
Choose the correct answer from the options given below:
- How many categories of Disabilities are included in RPWD Act, 2016?
If the child repeatedly finds it difficult to tell the time from wall clock despite having proper sight and physique, it best demonstrates that the child is:
Which among the following includes all measures aimed at reducing the impact of disabling and handicapping conditions enabling the disabled and handicapped to achieve social integration?
