Diagnostic, Symptomatic And Related Terms Ch 15 Of Med Term

Front 1

achromatopsia

Back 1

severe congenital deficiency in color perception AKA complete color blindness

Front 2

chalazion

Back 2

small hard tumor developing on the eyelid, somewhat similar to a sebaceous cyst

Front 3

conjunctivitis

Back 3

inflammation of the conjunctive w/vascular congestion, producing red/pink eye; may be secondary to viral, chlamydial, bacterial, fungal infections or allergy

Front 4

convergence

Back 4

medial movement of the 2 eyeballs so that they are both directed at the object being viewed

Front 5

diopter

Back 5

meas of refractive error
neg=myopia
pos=hyperopia

Front 6

ectropion

Back 6

eversion or outward turning of the edge of the lower eyelid

Front 7

emmetropia

Back 7

norm cond of the eye in refraction in which, when the eye is at rest, parallel rays focus exactly on the retina

Front 8

entropion

Back 8

inversion/inward turning of the edge of the lower eyelid

Front 9

epiphora

Back 9

abn overflow of tears

Front 10

exophthalmos

Back 10

protrusion of one or both eyeballs

Front 11

hordeolum

Back 11

localized, circumscribed, inflammatory swelling of one of the several sebaceous glands of the eyelid, generally caused by a bacterial infection AKA sty

Front 12

metamorphopsia

Back 12

visual distortion of objects

Front 13

nyctalopia

Back 13

inability to see well in dim light AKA night blindness (cataracts, vit A deficiency, meds, hereditary)

Front 14

nystagmus

Back 14

invol eye movements that appear jerky and may reduce vision or be assoc w/other, more serious conditions that limit vision

Front 15

papilledema

Back 15

edema and hyperemia of the optic disc usually assoc with inc ocular press resulting from intracranial press
AKA choked disc

Front 16

photophobia

Back 16

unusual intolerance and sensitivity to light (meningitis, inflammation of eyes, measles, rubella)

Front 17

presbyopia

Back 17

loss of accommodation of the crystalline lens assc w/ the aging process

Front 18

retinopathy

Back 18

any disorder of retinal blood vessels

Front 19

diabetic retinopathy

Back 19

disorder that occurs in pts with diabetes and is manifested by small hemorrhages, edema, and formation of new vessels ont he retina, leading to scarring and eventual loss of vision

Front 20

trachoma

Back 20

chronic, contagious form of conjunctivitis common in the SW USA that typically leads to blindness

Front 21

visual field

Back 21

area w/in which objects may be seen when the eye is in a fixed position

Front 22

anacusis

Back 22

deafness AKA anacusia
(unilateral or bilateral)

Front 23

conduction impairment

Back 23

blocking of sound waves as they are conducted throught he external and middle ear (conduction pathway)

Front 24

labyrinthitis

Back 24

inflammation of the inner ear that usually results from an acute febrile process (leads to progressive vertigo)

Front 25

Meniere disease

Back 25

disorder of the labyrinth that leads to progressive loss of hearing (vertigo, sensorineural hearing loss, and tinnitus)

Front 26

otitis externa

Back 26

infection of the external auditory canal (causes: swimmer's ear, bact/fungal infections, seborrhea, eczema, allergies)

Front 27

presbyacusis

Back 27

impairment of hearing resultin from old age
AKA presbyacusia
irreversible

Front 28

pressure-equalizing (PE)tubes

Back 28

tubes inserted through the tympanic membrane, commonly to treat chronic otitis media
AKA tympanostomy tubes or ventilation tubes
(they stay in ~9mo or removed at age 5-6)

Front 29

tinnitus

Back 29

perception of ringing, hissing, other sounds in ears or head when no external sound is present
(blow to head, lg doses of asprin, anemia, noise exposure, stress, impacted wax, hypertension, and meds, tumors

Front 30

vertigo

Back 30

hallucination of movement, or feeling of spinning/dizziness
(cause:Meniere disease and labyrinthitis)