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Person—cataract status, code N

Identifying and definitional attributes

Metadata item type:Help on this termData Element
Short name:Help on this termCataract - history
METeOR identifier:Help on this term270252
Registration status:Help on this termHealth, Standard 01/03/2005
Definition:Help on this termWhether the individual has a cataract present in either or both eyes or has had a cataract previously removed from either or both eyes, as represented by a code.
Data Element Concept:Person—cataract status

Value domain attributes

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
1Cataract currently present or has been previously removed from the right eye
2Cataract currently present or has been previously removed from the left eye
3Cataract currently present or has been previously removed from both eyes
4No cataract present or has not been previously removed from either eye
Supplementary values:Help on this term
9Not stated/inadequately described

Data element attributes

Collection and usage attributes

Collection methods:Help on this term

Examination of the lens of the eye through a dilated pupil (visible through the pupil by the use of an ophthalmoscope) by an ophthalmologist or optometrist, as a part of the ophthalmological assessment.

Ask the individual if he/she has a cataract in either or both eyes or has had a cataract removed from either or both eyes previously. Alternatively obtain information from an ophthalmologist or optometrist or from appropriate documentation.

Comments:Help on this term

Cataract is a clouding of the lens of the eye or its capsule sufficient to reduce vision. The formation of cataract occurs more rapidly in patients with a history of ocular trauma, uveitis, or diabetes mellitus. Cataract is an associated diabetic eye problem that could lead to blindness.

Regular eye checkups are important for patients suffering from diabetes mellitus. This helps to early detect abnormalities and to avoid or postpone vision-threatening complications. A comprehensive ophthalmological examination includes:

  • check visual acuity with Snellen chart -correct with pinhole if indicated
  • examine for cataract
  • examine fundi with pupils dilated.

Source and reference attributes

Submitting organisation:Help on this termNational Diabetes Data Working Group
Origin:Help on this termNational Diabetes Outcomes Quality Review Initiative (NDOQRIN) data dictionary.

Relational attributes

Related metadata references:Help on this term

Supersedes Cataract - history, version 1, DE, NHDD, NHIMG, Superseded 01/03/2005.pdf (16.4 KB)

Implementation in Data Set Specifications:Help on this term

Diabetes (clinical) DSS Health, Superseded 21/09/2005

Diabetes (clinical) NBPDS Health, Standard 21/09/2005

Diabetes (clinical) NBPDS Health, Candidate 15/05/2017

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