Jaeger
Jaeger
Jaeger (/ˈjeɪɡər/; from German Jäger, "hunter") is a term used in several medical contexts.
Pronunciation
The term is pronounced as "yay-ger".
Etymology
The term originates from the German word Jäger, meaning "hunter". In the medical context, it is often used to refer to a type of eye chart used for vision testing.
Jaeger Eye Chart
The Jaeger Eye Chart is a small, handheld card used to test a patient's near vision. The chart consists of short blocks of text in various font sizes. A patient reads the chart at a distance that's comfortable for them, and the smallest size text they can read is their near visual acuity.
Jaeger Number
A Jaeger Number is a unit of measurement on the Jaeger Eye Chart. The numbers range from J1 to J11, with J1 being the smallest text size and J11 being the largest. A person with normal near vision is expected to read J1 text at a distance of 35 centimeters.
Related Terms
- Visual Acuity: This is the sharpness of a person's vision. The Jaeger Eye Chart is one method of testing visual acuity.
- Snellen Chart: This is another type of eye chart used to measure visual acuity. Unlike the Jaeger Eye Chart, the Snellen Chart is designed for use at a fixed distance of 20 feet.
- Optotype: This is a standardized symbol used in vision testing. Both the Jaeger and Snellen charts use optotypes.
External links
- Medical encyclopedia article on Jaeger
- Wikipedia's article - Jaeger
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