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44 Cards in this Set
- Front
- Back
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Eye |
Organ for vision. |
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Orbit |
Ball shaped cavity of the skull, where eye is located. |
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Ophthalmologists |
Doctor of medicine which specialized in diagnosing and treating eye disorders. |
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Palpebral fissure |
Oval opening between the upper and lower eyelids. Determine race |
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Palpebral conjunctiva |
Inner lining of the eyelid, made of mucous membrane. |
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Blink reflex |
Protect the eye from foreign bodies |
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Lacrimal glands |
Produce tears to keep the eyes surface moist and lubricated. Upper outer of the eyelid. |
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Nasolacrimal duct |
Drain tears to the nose, located in the inner corner of the eye. |
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Dacryocystitis |
Blockage,inflammation and infection of a nasolacrimal duct and lacrimal sac, causing redness and swelling of lower lid. |
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Cornea |
Transparent part of the sclera, which permits light ray to pass. Very sensitive to touch and pain. |
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Iris |
The pigment in the iris determine the color of the eye. It control the intensity of light that enter the eye by controlling the size of the pupil. |
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Pupil |
It is the opening at the center of the iris. |
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Ciliary body |
Contain ciliary muscle that adjust the shape of the thickness of the lens. Secrete aqueous humor- (regulates the intravenous ocular pressure) |
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Aqueous humor |
Fluid that flow through the anterior and posterior chamber of the eye. |
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Anterior chamber |
The space between cornea and iris lens |
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Posterior chamber |
Space behind the iris and the lens. |
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Intraocular pressure |
Pressure inside the eye 10-21mmhg, average is 15-16. |
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Sclera |
White, tough protective outer layer of the eye and connected to the cornea. |
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Choroid Layer |
Middle layer, vascular layer to bring nutrients and oxygen to the eye. |
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Retina |
Eyeball inner layer, it contain the visual receptors:rod and cones. |
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Rods |
For night vision (scotopic vision), perception of black and white. |
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Cones |
For daylight, bright light( photopic vision), perception of colors. |
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Macula |
Contain the fovea centralis Dark portion |
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Central fovea |
Special area in retina with sharpest vision. |
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Optic disk |
A blind spot in the retina is due to the area where ophthalmic artery enter and the ophthalmic vein and optic nerve exit. That area had no visual receptor. |
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Vitreous humor |
Transparent material filled the space inside the eyeball. Responsible for maintaining the shape of the eyeball and contribute to the intraocular pressure. Loss of vitreous humor will cause detachment of the retina and lead to blindness. |
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Refraction |
Bending of light |
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Hyperopia |
Farsightedness |
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Myopia |
Nearsightedness |
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Diplopia |
Double vision-weakness on eye muscle. |
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Mydriasis |
Dilation, enlargement of the pupils. |
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Photophobia |
Sensitivity to light |
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Presbyopia |
Loss of accommodation due to loss of lens elasticity, related to aging. |
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Astigmatism |
Condition in which the eye cannot bring horizontal and vertical lines due to the irregularity in the curvature of the cornea and lens. |
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Ear |
Organ for hearing and equilibrium |
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Pinna or auricle |
Made up of cartilage and skin. Is a funnel shaped to gather and guide sound wave into small opening. |
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Cerumen |
Waxy substance |
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Cochlea |
Organ of hearing. |
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Eustachian tube |
Connect the middle ear with the nasopharynx to equalize the pressure in the middle and the external atmospheric pressure. Open during swallowing and yawning. |
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Vestibules |
Relay info to the Brian on change of body position. |
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Semicircular canals |
Receptors for equilibrium.(balance) |
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Vertigo |
Sensation that you are spinning or the room is spinning |
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Tinnitus |
Ringing in the ears |
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Presbycusis |
Decrease hearing related to aging. |
