Survey of Disabled Persons , July-Dec 1990
NSS 47th Round

India

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Reference ID

IND-NSSO-SDP-1991-v1.0

Producer(s)

National Sample Survey Office

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Jan 16, 2018

Last modified

Mar 27, 2019

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Cause of visual disability (B5_q6)

Data file: Block 5_Particulars of physical disability of the disabled member

Overview

Valid: 0

Invalid: 0

Type: Discrete

Start: 47

End: 48

Width: 2

Range: -

Format: character

Questions and instructions

Literal question

What is the cause of visual disabilty of the member of the household?

Categories

Value	Category
00	not reported
01	sore eyes first month of life
02	sore eyes after one month
03	severe diarrhoea before the age of six years
04	cataract
05	glaucoma
06	corneal opacity
07	other eye diseases
08	small pox
10	burns
11	injury other than burns
12	medical/surgical intervention
13	old age
14	other reasons
15	not known

Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.

Description

Definition

Visual disability:
By visual disability, it was meant, loss or lack of ability to execute tasks requiring adequate visual acuity. For the survey, visually disabled included (a) those who did not have any light perception - both eyes taken together and (b) those who had light perception but could not correctly count fingers of hand (with spectacles/contact lenses if he/she used spectacles/contact lenses) from a distance of 3 metres (or 10 feet) in good day light with both eyes open. Night blindness was not considered as visual disability.

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Survey of Disabled Persons , July-Dec 1990 NSS 47th Round