Pupil Testing and Anatomy Overview

Flashcards covering key concepts, definitions, and important terms related to pupil testing and anatomy.

Purpose of pupil testing

Detects retinal and neurological issues.

Normal pupil size

2–8 mm, round, slightly inferior/nasal.

Sphincter pupillae

Circular muscle that constricts the pupil; controlled by parasympathetic nervous system.

Dilator pupillae

Radial muscle that dilates the pupil; controlled by sympathetic nervous system.

Functions of the iris

Controls pupil size, light adaptation, reduces aberrations, increases depth of focus.

Observation in pupil testing

Involves checking size, shape, symmetry, and eyelids for conditions like corectopia or polycoria.

RAPD

Relative afferent pupillary defect, detected using a swinging flashlight test.

Horner’s syndrome

Characterized by miosis, ptosis, and anhydrosis; related to sympathetic issues.

Miosis

Contraction of the pupil.

Mydriasis

Dilation of the pupil.

Corectopia

Displaced pupil.

Polycoria

Presence of multiple pupils.

Light-near dissociation

Condition where the pupil reacts to near focus but not to light.