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Blindness status code N

Identifying and definitional attributes

Metadata item type:Help on this termValue Domain
METeOR identifier:Help on this term270668
Registration status:Help on this termHealth, Standard 01/03/2005
Definition:Help on this termA code set representing whether an individual has become legally blind in either one or both eyes during the previous 12 months.

Representational attributes

Representation class:Help on this termCode
Data type:Help on this termNumber
Format:Help on this termN
Maximum character length:Help on this term1
Permissible values:Help on this term
ValueMeaning
1Blindness - (< 6/60) occurred in either or both eyes in the last 12 months
2Blindness - (< 6/60) occurred in either or both eyes prior to the last 12 months
3Blindness - (< 6/60) occurred in one eye within 12 months and in the other eye prior to the last 12 months
4No blindness
Supplementary values:Help on this term
9Not stated/inadequately described

Collection and usage attributes

Guide for use:Help on this term

CODE 3     Blindness - (< 6/60) occurred in one eye within 12 months and in the other eye prior to the last 12 months

Blindness can be diagnosed in one eye within 12 months even though it has been previously diagnosed on the other eye.

Collection methods:Help on this term

Ask the individual if he/she has been diagnosed as legally blind (< 6/60) in both or either eye. If so record whether it has occurred within or prior to the last 12 months.

Alternatively determine blindness from appropriate documentation obtained from an ophthalmologist or optometrist.

Relational attributes

Data elements implementing this value domain:Help on this term

Person—blindness, code N Health, Standard 01/03/2005

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