Normal adjustment of the eye to focus on objects from far to near.
Reduced vision (poor eyesight).
Inequality in the size of pupils.
Space behind the cornea and in front of the lens and iris; contains aqueous humor.
Absence of the lens of the eye.
Fluid produced by the ciliary body and found in the anterior chamber of the eye.
Abnormal curvature of the eyeball so that rays of light are not focused on a single point on the retina.
Auditory nerve fibers
These carry impulses from the inner ear to the brain (cerebral cortex).
Having two sides that are rounded, elevated, and curved evenly like part of a sphere. The lens of the eye is biconvex.
Inflammation of an eyelid.
Prolapse of the upper eyelid caused by abnormalities of the eyelid muscle or by nerve damage.
Clouding or loss of transparency of the lens of the eye.
Small, hard mass (granuloma) on the eyelid.
Middle, vascular layer of the eye.
Structure on each side of the lens that connects the choroid and iris; contains muscles that control the shape of the lens.
Photoreceptor cell in the retina; responsible for color and central vision.
Delicate membrane lining the eyelids and covering the eyeball.
Inflammation of the conjunctiva.
Fibrous transparent layer of clear tissue that extends over the anterior portion of the eyeball.
Rubbing off of a part of the outer layer of the cornea.
Pertaining to the cornea and sclera, which is the white of the eye.
Paralysis of the muscles of the ciliary body.
Inflammation of tear glands.
Disease of the retina due to long-term effects of diabetes.
Removal of the eyeball from the orbit of the eye.
Turning inward of one or both pupils; cross-eyes.
Turning to the side or outward of one or both pupils.
Process of recording (viewing and photographing) the circulation of a fluorescein dye through the blood vessels of the retina.
Tiny pit or depression in the retina that is the region of clearest vision.
Fundus of the eye
Large, posterior inner part of the eye that is visualized with an ophthalmoscope.
Fluid accumulation in the anterior and posterior chambers of the eye causing increased pressure and damage to the retina.
Absence of vision for one half, right or left, of an individual's field of vision.
Inflammation of an oil-secreting gland in the eyelid; stye.
Farsightedness; light rays are focused beyond, instead of directly on the retina.
Disease of the retina due to high blood pressure.
Pertaining to within the eye.
Removal of a portion of the iris.
Pertaining to the iris.
Colored, pigmented portion of the eye, surrounding the pupil.
Inflammation of the iris of the eye.
Inflammation of the cornea.
Surgical repair of the cornea; corneal transplant.
Pertaining to tears.
Production of tears.
Use of a laser to seal retinal tears and leaky retinal blood vessels.
Transparent biconvex body behind the pupil of the eye.
Yellowish region on the retina lateral to and slightly below the optic disc; contains the fovea centralis, the area of clearest and central vision.
Deterioration of the macula of the retina and producing a loss of central vision.
Contraction of the pupil of the eye.
Drug that causes the pupil of the eye to contract.
Widening of the pupil of the eye.
Nearsightedness; vision for near objects is better than for far.
Night blindness or difficult, poor vision at night.
Repetitive, rhythmic movements of one or both eyes.
Pertaining to the eye.
Medical doctor specializing in the diseases of the eye.
Paralysis of muscles that move the eyeball.
Visual examination of the interior of the eye.
Point at which optic nerve fibers cross in the brain.
Region at the back of the eye where the optic nerve meets the retina.
Non-medical professional trained in grinding lenses and fitting eyeglasses.
Cranial nerve that carries impulses from the rod and cone cells of the retina to the cerebral cortex in the occipital lobe of the brain.
Non-medical professional trained to examine and measure the eye to prescribe and fit eyeglasses and contact lenses.
Pertaining to an eyelid.
Swelling of the optic disc; associated with increased pressure within the eye.
Lens of the eye is extracted (cataract removal) using ultrasonic vibrations.
Sensitivity to light.
Impairment of vision associated with middle or older age.
Dark, central portion of the eye.
Pertaining to the pupil of the eye.
Bending of light rays by the cornea, lens, and fluids of the eye to bring light rays into focus on the retina.
Sensitive nerve cell layer of the eye.
Separation of the two layers of the retina from each other.
Inflammation of the retina with pigmentation and progressive scarring of tissue.
Photoreceptor retinal cell; essential for seeing objects in low light and for peripheral vision.
White portion of the eyeball.
Procedure to suture a band of silicone on the sclera directly over a detached portion of the retina.
Inflammation of the sclera.
Blind spot in the field of vision.
Examination of ocular (eye) structures using a slit lamp and microscope.
Abnormal deviation of the pupils; esotropia or exotropia are examples.
Relay center in the brain through which optic nerve fibers pass on their way to the cerebral cortex.
Measurement of tension and pressure within the eye; glaucoma test.
Inflammation of the uvea, which is the vascular layer of the eye (including the iris, choroids, and ciliary body).
Visual acuity test
Measurement of clearness of vision; assessed by reading letters of decreasing size on an eye chart.
Visual field test
Measurement of the area in front of the eye in any part of which an object is seen without moving the eye.
Removal of vitreous humor.
Soft, jelly-like material that fills the inner vitreous chamber of the eye.
Condition of excessive dryness of the eye.
Pertaining to hearing.
Benign tumor arising from the acoustic nerve.
Record of hearing using an audiometer.
Instrument to measure or test hearing.
Process of testing hearing.
Channel leading from the ear flap to the eardrum.
Opening of the auditory canal to the outside of the body.
Channel between the middle ear and the throat; eustachian tube.
Pertaining to the ear.
Flap of the ear; pinna.
Waxy substance secreted by the ear; ear wax.
Middle ear mass of cellular debris and cholesterol crystals.
Snail-shaped, spirally wound tube in the inner ear; contains hearing-sensitive receptor cells.
Pertaining to the cochlea.
Loss of the ability to hear.
Measurement of the temperature of the tympanic membrane by detection of infrared radiation from the eardrum.
Fluid within the labyrinth (canals) of the inner ear; conducts sound waves.
Channel between the middle ear and the throat; auditory tube.
Excessive sensitivity to sounds.
Small anvil-shaped bone (ossicle) in the middle ear; second ossicle.
Maze-like series of canals of the inner ear; cochlea, vestibule and semicircular canals.
Abnormally large ears.
Hammer-shaped, small bone (ossicle) in the middle ear.
Inflammation and infection of the mastoid process just behind the ear.
Disorder of the labyrinth of the inner ear; elevated endolymph (fluid) pressure.
Abnormally small ears.
Inflammation of the eardrum.
Incision of the eardrum.
Small bone; malleus, incus, or stapes of the middle ear.
Surgical repair of an ossicle (small bone) of the middle ear.
Pertaining the ear.
Specialist (surgeon) in ear, nose and throat disorders.
Fungal infection of the ear.
Discharge of pus from the ear.
Overgrowth and hardening of bony tissue in the labyrinth (inner ear).
Visual examination of the ear using an otoscope.
Membrane between the middle and inner ears.
Fluid contained in the labyrinth (canals of the inner ear).
Outer ear flap; auricle.
Pertaining to behind the ear.
Progressive loss of hearing, occurring in middle and older age.
Pertaining to the eustachian tube and the throat.
Passageways in the inner ear that are associated with maintaining equilibrium.
Serous otitis media
Non-infectious inflammation of the middle ear with accumulation of clear fluid.
Removal of the stapes (third middle ear bone).
Small, stirrup-shaped bone in the middle ear; third ossicle.
Suppurative otitis media
Infectious inflammation of the middle ear with pus formation.
Ringing, buzzing or roaring sound in the ear.
Tuning fork tests
Measure bone and air conduction of sound through the ear.
Membrane between the outer and middle ear; eardrum.
Surgical repair of the eardrum.
Abnormal sensation of moving in space or having objects move about you in space.
Central cavity of the labyrinth, connecting the cochlea and semicircular canals.
Pertaining to the vestibule and cochlea.