Chapter 14: Seeing & Hearing

opt/i, opt/o, optic/o, ocul/o, opthalm/o

combining form(s) for the eye or sight

extraocular

outside the eye

intraocular

inside the eye

periocular

around the eye

palpebrae

another term used for the eyelid

blephar/o

combining form for eyelid

canthus

the angle where the upper & lower eyelids meet

canth/o

combining form for canthus

cilia

hairlike structures (eyelashes)

conjunctiv/o

combining form for conjunctiva

lacrim/o & dacry/o

combining form(s) meaning teardrop, tear duct, or lacrimal duct

scler/o

combining form for sclera

corne/o & kerat/o

combining form for cornea

opaque

light cannot pass through

lucent

light can pass through

ir/i, ir/o, irid/o, irit/o

combining form(s) for the iris of the eye

pupill/o

combining form for pupil

phac/o & phak/o

combining form(s) for the lens of the eye

choroid/o

combining form for choroid

retin/o

combining form for retina

anisocoria

condition of unequal pupil size

blepharitis

inflammation of the eyelids

blepharospasm

involuntary contractions / closure of the eyelids

buphthalmos

abnormal enlargement of the eye

conjunctivitis

inflammation of the conjunctiva

dacryoadenitis

inflammation of the lacrimal gland

distichia

eyelash(es) in an abnormal location that typically results in irritation to the conjunctiva or cornea

ectropion

eversion (turning outward) of the eyelid

entropion

inversion (turning inward) of the eyelid

enucleation

removal of the eyeball

epiphora

excessive tear production

exophthalmos

abnormal protrusion of the eyeball

glaucoma

group of disorders resulting from elevated intraocular pressure

hypopyon

pus in the anterior chamber of the eyeball

keratitis

inflammation of the cornea

keratoconjunctivitis

inflammation of the cornea & conjunctiva

microphthalmia

abnormally small eyes

nystagmus

involuntary, constant, rhythmic movement of the eye

ophthalmoscope

instrument used to examine the eyes

proptosis

displacement of the eyeball from the orbit

strabismus

deviation of one or both eyes

uveitis

inflammation of the uvea (the iris, ciliary body, and choroid together)

ot/o, aur/i, aur/o

combining form(s) for ear

acoust/o, acous/o, audit/o, audi/o

combining form(s) for sound or hearing

pinn/i

combining form for external ear (pinna)

tympan/o & myring/o

combining form(s) for eardrum (tympanic membrane)

equilibrium

the state of balance

otoscope

instrument used to examine the ears

aural hematoma

collection of blood on the outer ear (pinna)

otitis

inflammation of the ear (may be externa, media, or interna)

ablation

the process of removing or destroying tissue, a body part, or its function

AS

left ear

AD

right ear

AU

both ears

OS

left eye

OD

right eye

OU

both eyes