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Definition
PIGMENTED LAYER THAT OPENS AND CLOSES TO ALLOW MORE OR LESS LIGHT INTO THE EYE |
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Term
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Definition
YELLOWISH REGION ON THE RETINA LATERAL TO AND SLIGHTLY BELOW THE OPTIC DISC
CONTAINS THE FOVEA CENTRALIS, WHICH IS THE AREA OF CLEAREST VISION |
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Term
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Definition
TRANSPARENT, BICONVIX BODY BEHIND THE PUPIL OF THE EYE.
IT BENDS (REFRACTS) LIGHT RAYS TO BRING THEM INTO FOCUS ON THE RETINA |
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Term
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Definition
| TINY PIT OR DEPRESSION IN THE RETINA THAT IS THE REGION OF CLEAREST VISION |
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Term
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Definition
| POSTERIOR, INNER PART OF THE EYE |
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Term
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Definition
| NORMAL ADJUSTMENT OF THE EYE TO FOCUS ON OBJECTS FROM FAR TO NEAR. THE CILIARY BODY ADJUSTS THE LENS (ROUNDING IT) AND THE PUPIL CONSTRICTS. WHEN THE EYE FOCUSES FROM NEAR TO FAR, THE CILIARY BODY FLATTENS THE LENS AND PUPIL DILATES. |
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Term
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Definition
AREA BEHIND THE CORNEA AND IN FRONT OF THE LENS AND IRIS.
IT CONTAINS AQUEOUS HUMOR. |
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Term
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Definition
PHOTORECEPTER CEL IN THE RETINA THAT TRANSFORMS LIGHT ENERGY INTO A NERVE IMPULSE.
THEY ARE RESPONSIBLE FOR COLOR AND CENTRAL VISION. |
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Term
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Definition
| FIBROUS TRANSPARENT LAYER OF CLEAR TISSUE THAT EXTENDS OVER THE ANTERIOR PORTION OF THE EYEBALL. DERIVED FROM LATIN, IT MEANS HORNY, PERHAPS BECAUSE IT PORTRUDES OUTWARD, IT WAS THOUGHT TO RESEMBLE A HORN. |
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Term
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Definition
| DELICATE MEMBRANE LINING THE UNDERSURFACE OF THE EYELIDS AND COVERING THE ANTERIOR EYEBALL. |
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Term
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Definition
| MIDDLE, VASCULAR LAYER OF THE EYE, BETWEEN THE RETINA AND THE SCLERA. |
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Term
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Definition
| FLUID PRODUCED BY THE CILIARY BODY AND FOUND IN THE ANTERIOR CHAMBER. IN LATIN, IT MEANS MOIST. IT'S IN ANY BODY FLUID, INCLUDING BLOOD AND LYMPH. |
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Term
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Definition
CONSISTING OF TWO SURFACES THAT ARE ROUNDED, ELEVATED, AND CURVED EVENLY, LIKE PART OF A SPHERE.
THE LENS OF THE EYE IS ONE. |
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Term
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Definition
| STRUCTURE SURROUNDING THE LENS THAT CONNECTS THE CHOROID AND IRIS. HAS MUSCLES THAT CONTROL THE SHAPE OF THE LENS, AND IT SECRETES AQUEOUS HUMOR. |
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Term
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Definition
| LIGHT-SENSITIVE NERVE CELL LAYER OF THE EYE CONTAINING PHOTORECEPTOR CELLS (RODS & CONES) |
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Term
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Definition
| TOUGH, WHITE OUTER COAT OF THE EYEBALL. |
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Term
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Definition
| POINT AT WHICH OPTIC NERVE FIBERS CROSS IN THE BRAIN. IT MEANS CROSSING. |
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Term
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Definition
| REGION AT THE BACK OF THE EYE WHERE THE OPTIC NERVE MEETS THE RETINA. IT'S THE BLIND SPOT OF THE EYE BECAUSE IT CONTAINS ONLY NERVE FIBERS, NO RODS OR CONES, AND IS THUS INSENSITIVE TO LIGHT. |
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Term
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Definition
CENTRAL OPENING OF THE EYE, SURROUNDED BY THE IRIS, THROUGH WHICH LIGHT RAYS PASS.
IT APPEARS DARK. |
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Term
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Definition
| CRANIAL NERVE CARRYING IMPULSES FROM THE RETINA TO THE BRAIN (CEREBRAL CORTEX) |
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Term
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Definition
| BENDING OF LIGHT RAYS BY THE CORNEA, LENS, AND FLUIDS OF THE EYE TO BRING THE RAYS INTO FOCUS ON THE RETINA. |
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Term
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Definition
| PHOTORECEPTOR CELL OF THE RETINA ESSENTIAL FOR VISION IN DIM LIGHT AND FOR PERIPHERAL VISION. |
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Term
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Definition
| SOFT, JELLY-LIKE MATERIAL BEHIND THE LENS IN THE VITREOUS CHAMBER; IT HELPS MAINTAIN THE SHAPE OF THE EYEBALL. |
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Term
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Definition
| RELAY CENTER OF THE BRAIN. OPTIC NERVE FIBERS PASS THROUGH IT ON THE WAY TO THE CEREBRAL CORTEX. |
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