Visual Acuity

From WikiHIT

1 Description
2 Synopsis
3 Applicability
4 Instructions
5 Relationships
6 Attributes
7 References

[edit] Description

Visual acuity is the eye's ability to detect fine details and is the quantitative measure of the eye's ability to see an in-focus image at a certain distance. The standard definition of normal visual acuity (20/20 or 6/6 vision) is the ability to resolve a spatial pattern separated by a visual angle of one minute of arc. The terms 20/20 and 6/6 are derived from standardized sized objects that can be seen by a "person of normal vision" at the specified distance.

If the patient is unable to read the chart at any distance, counting fingers, hand motion and light perception is also tested.

[edit] Synopsis

Short Name	Visual Acuity
Long Name	Visual Acuity
TemplateID
UMLS Concept Code	C0442746
Synonym
Type	Observation
Revision	11181

[edit] Applicability

Account	eCHR/ePHR
Sex	All
Age	All
Exceptions	None

[edit] Instructions

Patient
Clinical

[edit] Relationships

Type	Category or CDD	Cardinality
Contains	Visual Acuity-Distance	0..*
Contains	Visual Acuity-Near	0..*
Contains	Visual Acuity-Counting Fingers	0..*
Contains	Visual Acuity-Hand Motion	0..*
Contains	Visual Light Perception	0..*