| A | B |
|---|
| amblyopia | dimness of vision from disuse of the eye, sometimes called "lazy eye" |
| astigmatism | error in light refraction on the retina caused by unequal curvature in the eye's cornea; light rays bend in different directions to produce a blurred image |
| ataxia | lack of coordination caused by disturbances in the kinesthetic and balance senses |
| aura | sensation that signals an impending epileptic attack; may be visual, aromatic, or other sensation |
| binocular vision | normal vision maintained through the muscular coordination of eye movements of both eyes, a single vision results |
| cataract | development of opacity in the crystalline lens that prevents light rays from entering the eye |
| clonus | rapid involuntary muscle contraction and relaxation |
| conjunctivitis | acute inflammation of the conjunctiva that may be caused by a virus, bacteria, allergy, or foreign body |
| diplopia | double vision |
| dysarthria | poor speech articulaiton |
| esotropia | eye deviation toward the other eye |
| exotropia | eye deviation away from the other eye |
| goniotomy | surgical opening into the Schlemm's canal that allows drainage of the aqueous humor; performed to relieve intraocular pressure in glaucoma |
| hordeolum | purulent infection of the follicle ofan eyelash; generally caused by S. aureus |
| hyperopia | refractive condition in which the person can see objects better at a distance; farsightedness |
| lacrimation | secretion of tears |
| myopia | ability to see items at a close range but not at a distance; nearsightedness |
| myringotomy | incision of the eardrum performed to establish drainage and to insert tiny tubes into the tympanic membrane to facilitate drainage of serous or purulent fluid in the middle ear |
| nuchal rigidity | stiff neck |
| opisthotonos | arching of the back so that the head and heels are bent backward and the body is forward |
| orthoptics | therapeutic exercises to improve the quality of vision |
| photophobia | intolerance to light |
| purpuric rash | rash consisting of ecchymoses and petechiae caused by bleeding under the skin |
| refraction | the way light rays bend as they pass through the lens of eye to the retina |
| strabismus | failure of two eyes to direct their gaze at the same object, simultaneously; squint; crossed eyes |
