Examlex
A rat gets light then shock until it responds to the light.Then,it gets light plus tone before shock for additional trials.In later test trials,the rat shows strong reaction to the light and little reaction to the sound.What is this phenomenon called?
Optic Disc
The point on the retina at which the optic nerve fibers exit the eye, creating the blind spot as it lacks photoreceptors.
Fovea Centralis
A small depression in the retina of the eye where visual acuity is highest, due to the concentration of cone cells.
Blind Spot
The blind spot is an area on the retina without photoreceptors where the optic nerve exits the eye, resulting in a gap in the visual field.
Astigmatism
A common vision condition causing blurred vision due to an irregular curvature of the cornea or the lens inside the eye.
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