Physiology of vision Special senses - I. Eye.

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Presentation transcript:

Physiology of vision Special senses - I

Eye

Muscles

Vitreous humor: Intra-ocular fluid

Layers of retina

Color vision test

Visual pathway

Visual cortex

Neural pathway of eye movement

Glaucoma

Cataract

Nystagmus

Squint/strabismus Strabismus is a condition that interferes with binocular vision because it prevents a person from directing both eyes simultaneously towards the same fixation point; the eyes do not properly align with each other. Strabismus typically involves a lack of coordination between the extraocular muscles, which prevents directing the gaze of both eyes at once to the same point in space; it thus hampers proper binocular vision, and may affect depth perception adversely. Strabismus is primarily managed by ophthalmologists, optometrists, and orthoptists. Strabismus is present in about 4% of children. Treatment should be started as early as possible to ensure the development of the best possible visual acuity and stereopsis.

Other disorders