Examlex
A DTD provides a way to uniquely identify a particular item in the source document.
Snellen Chart
A chart used to measure visual acuity, consisting of rows of letters decreasing in size that the patient reads from a specified distance.
Jaeger System
A method used to assess near vision acuity, using a chart of varied sizes of print to determine the smallest text a person can read.
Occluder
A device or object that obstructs or blocks the flow of fluid or light, often used in medical procedures to correct defects or abnormal pathways.
Ishihara Method
A color vision test for detecting red-green color deficiencies using colored dots to form numbers or shapes.
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