Anatomy and Physiology of the Eye
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| show | Eyeball
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| show | Clear, round membrane at the front of the globe.
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| Iris | show 🗑
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| Pupil | show 🗑
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| show | Second part of the optical focusing system located immediately behind the iris.
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| show | Clear, jelly-like substancewhich fills the large space behind the crystalline lens.
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| show | Transparent layer of tissue that forms the innermost lining of the globe.
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| Optic Nerve | show 🗑
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| Axial Length | show 🗑
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| show | An ultrasound test which measures the thickness of the cornea.
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| show | The tissues and structures surrounding the eye.
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| show | Pear-shaped, bony cavity in the skull made up of 7 bones that house the globe, extraocular muscles, blood vessels , and the nerves, all of which are cushioned by layers of fat.
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| show | A fracture in the floor of the orbit that results from blunt force trauma.
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| show | The muscles that control movement of the globe.
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| show | Rotates the eye inward towards the nose (ADDUCTION)
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| show | Rotates the eye outward toward the temple (ABDUCTION)
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| Superior Oblique Muscle | show 🗑
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| show | Primarily causes a torsional (twisting and turning) movement and twists the eye up and outward (EXCYCLOTORSION)
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| Binocular Vision | show 🗑
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| show | When the brain blends the seperate images received by the two eyes so that the person perceives a single view.
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| show | Condition resulting when the extraocular muscles do not work in a coordinated manner and the eyes become misaligned and the vision may be disturbed.
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| Eyelids | show 🗑
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| Palpebral Fissure | show 🗑
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| Medial Canthus | show 🗑
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| show | Temporal(outer) junction of the lids.
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| show | Front
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| Cilia | show 🗑
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| Trichiasis | show 🗑
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| External Hordeolum (Stye) | show 🗑
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| Posterior | show 🗑
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| show | Oil-secreting glands hidden in the tissue of the eyelids, located on the posterior margin of the eyelid closest to the globe.
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| Internal Hordeolum | show 🗑
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| Chalazion | show 🗑
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| Blepharitis | show 🗑
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| show | Dense, plate-like framework in the middle layer of the upper and lower eyelid which gives the eyelids their firmness and shape.
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| show | Circular muscle in the middle layer of the eyelid that closes the eye when it contracts, as in winking.
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| Levator Palpebrae Superioris | show 🗑
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| Ptosis | show 🗑
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| Ectropion | show 🗑
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| show | A condition when there is malformation or damage to the eyelid tissues that causes the lower lid margin to be turned inward.
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| Conjunctiva | show 🗑
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| show | Portion of conjuntiva lining the eyelids.
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| show | Section of conjunctiva that covers the outer eyeball.
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| show | Loose packet of conjunctival tissue located beneath the upper and lower lids where the palpebral and bulbar conjunctiva meet.
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| Conjunctivitis | show 🗑
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| Subconjunctival Hemorrhage (SCH) | show 🗑
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| Lacrimal Apparatus | show 🗑
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| show | A 3-layered coating that covers the front surface of the globe.
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| Lacrimal Gland | show 🗑
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| Mucinous | show 🗑
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| Goblet Cells | show 🗑
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| Foreign-Body Sensation (FBS) | show 🗑
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| show | Located on the upper and lower lid margins near the nose, tiny openings that tears pass through; entrance to the canaliculi.
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| show | Tubes that carry tears to the lacrimal sac.
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| show | Dilated end of the lacrimal duct that fill with tears carried by the canaliculi.
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| Nasolacrimal Duct | show 🗑
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| Dacryocystitis | show 🗑
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| Anterior Segment | show 🗑
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| Posterior Segment | show 🗑
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| Corneal Epithelium | show 🗑
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| Bowman's Membrane | show 🗑
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| Corneal Stroma | show 🗑
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| Descemet's Membrane | show 🗑
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| Corneal Endothelium | show 🗑
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| Corneal Abrasion | show 🗑
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| Corneal Ulcer | show 🗑
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| show | The white tissue surrounding the cornea.
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| Limbus | show 🗑
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| show | Small compartment between the cornea and iris that is filled with clear, transparent fluid.
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| show | Clear, transparent fluid that fills the anterior chamber and is produced by secretory tissue located behind the iris.
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| show | Junction of the cornea and iris in which aqueous fluid leaves the eye.
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| Trabecular Meshwork | show 🗑
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| show | Conduit in the sclera in which aqueous humor dains.
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| Aqueous Veins | show 🗑
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| Uvea (Uveal Tract) | show 🗑
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| show | Stretches from the pupils to the boundaries of the iris; contract to widen (dilate) the pupil in reduced lighting conditions.
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| show | Encircles the pupil and contracts to make the pupil smaller in response to bright light.
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| Posterior Chamber | show 🗑
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| Ciliary Body | show 🗑
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| show | A series of folds, rows, or ridges in the inner surface of the ciliary body that secrete the aqueous humor that fills the anterior and posterior chambers.
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| Ciliary Muscle | show 🗑
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| show | A layer of tissue that lies between the sclera and retina; the innermost surface of the posterior segment, made up mostly of blood vessels which supply nourishing blood to the outer layers of the retina.
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| Zonules | show 🗑
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| show | Clear, paste-like protien that surrounds the nucleous (core) of the inner lens.
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| show | When the curvature of the lens changes in order to focus images of objects that are closer to the eye.
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| show | A condition when a significant amount of the lens' ability to increase its curvature is lost and an individual can longer focus on very near objects.
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| Opacification | show 🗑
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| Cataract | show 🗑
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| Floaters | show 🗑
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| show | Pigmented layer of the retina.
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| show | Light-sensitive
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| show | Largly responsible for vision in reduced light (night vision) and for peripheral (side) vision.
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| show | Provide sharp central vision and the perception of color.
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| Optic Nerve Head (Optic Disc) | show 🗑
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| show | Oval-shaped, highly pigmented yellow spot near the center of the retina.
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| show | Center of the macula; the largest concentration of cone cells.
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