Word Roots
define nyctal
name three combining forms that means eye
ocul/o, ophthalm/o, and opt/o
define corne/o
cornea
define -itis
inflammation
word meaning double vision
diplopia
define log
study
define orth/o
straight
define cor/o
pupil
define -ptosis
prolapse drooping
inflammation of the vascular coat of the eye
choroiditis
define coagulat
to clot
name three combining forms that mean "lens"
lent/o, phac/o, and phak/o
define phot/o and pupil/o
light and pupil
define -oma
tumor
paralysis of the ciliary muscle
cycloplegia
define mydriat
dilate or widen
define conjunctiv/o
to join together, conjunctiva
define stigmat/o
point
sight or vision
record of the electrical response of the retina to light stimulation
electroretinogram
this word root means to disintegrate
emulsificat
Two combining forms meaning tear, lacrimal duct, tear duct
lacrim/o and dacrym/o
define metr/o, mi/o, irid/o, and trich/o
measure, less or small, iris, hair
Suffix meaning stroke or paralysis
-plegia
small hard painless cyst of a sebaceous gland on the eyelid
chalazion