SAS 2

Question 1

Definition: Normal Vision

Answer 1

A person is able to perform all close and distant visual tasks that are normally expected in his community.

Question 2

Define: Blindness

Answer 2

no usable vision with exception of light perception. It as the state of being sightless.

Question 3

Economic Blindness

Answer 3

visual performance with distance visual acuity of 6/60 or less in the better eye with best ophthalmic correction or as a defect in visual field so that the widest diameter of vision subtends an angle no greater than 20 degrees.

Question 4

Legal blindness

Answer 4

an individual with vision impairment is eligible for government benefits.

Question 5

Travel vision

Answer 5

When vision is 3/60 or better. Peripheral field of vision is at least 50 degrees in the widest diameter

Question 6

Partially sighted child

Answer 6

One who has distance VA between 6/24 to 6/60 in the better eye with the best correction.

Question 7

Visual function

Answer 7

ability to perform important task that require vision.

Question 8

visual disorder

Answer 8

deviation from normal visual structure by disease, injury, anomaly affecting vision

Question 9

visual impairment

Answer 9

reduction of visual function (ex in VA, VF, contrast sensitivity)

Question 10

visual disability

Answer 10

reduced ability to do certain tasks ( to read, write, orientation, mobility)

Question 11

visual handicap

Answer 11

It refers to non-performance of tasks related to individual .
It includes non-fulfilment of social expectation because of visual disability

Question 12

vision rehabilitation

Answer 12

Are services provided to both who are partially sighted and those who are blind. These services include mobility training, adaptive skills training, low vision instruction

Question 13

visual efficiency

Answer 13

refers to an individual functional visual ability in spite of loss. The use of low vision aids increases visual efficiency.

Question 13

visual efficiency

Answer 13

refers to an individual functional visual ability in spite of loss. The use of low vision aids increases visual efficiency.

Question 14

visual acuity

Answer 14

assessment of the eye’s ability to distinguish object details and shape, using the smallest identifiable object that can be seen at a specified distance

Question 15

visual field

Answer 15

full extent of the area visible to the eye when looking straight ahead.

Question 16

visual field loss

Answer 16

an area of vision loss in part of the usual visual field. Can occur due to disease or disorders of the eye, optic nerve, or brain.

Question 17

residual vision

Answer 17

usable vision in an individual with congenital or acquired visual impairment. For example, an individual with impaired vision in the peripheral visual field due to glaucoma may still have residual vision in the central visual field.

Question 18

visual enhancement device

Answer 18

permits this patient to perform such task beyond there visual capabilities

Question 19

visual enhancement technique

Answer 19

may not use visual device but instead use their residual vision

Question 20

visual substitution device

Answer 20

use of one or more sense other than sight ex. Talking watches

Question 21

visual substitution technique

Answer 21

use of one or more sense other than sight ex.( with the use of senses other than sight