Medical Terminology Simplified

11–8 Kerat/itis, a vision-threatening infection, can occur if contact lenses are not

cleaned and disinfected properly.

From kerat/itis, construct the CF for cornea.

____________________ / _____

11–9 Form medical words that mean

inflammation of the sclera:____________________ / __________

softening of the sclera:____________________ / _____ / ____________________

11–10 In some cases, laser kerat/o/tomy can be used to correct vision. Doing so

eliminates the need for contact lenses or glasses. Shallow, bloodless, hairline, radial

incisions are made using a laser in the outer portion of the cornea, where they will

not interfere with vision. This allows the cornea to flatten and helps to correct

nearsightedness.

About two-thirds of patients are able to eliminate the use of glasses or contact lenses

by undergoing the surgical procedure called laser

____________________ / _____ / __________.

11–11 The opening in the center of the iris is called the (8) pupil.The amount

of light entering the eye is controlled by contractions and dilations of the pupil. Con-

striction of the pupil permits a sharper near vision. It is also a reflex that protects the

retina from intense light. Label the pupil in Figure 11–1.

11–12 Words with ophthalm/o(eye) may be difficult to pronounce when you

first encounter them. To avoid confusion, write the pronunciation ŏf-THĂL-mō

and practice saying it aloud.

____________________

11–13 An ophthalm/o/scope is an ____________________for examining the

interior of the eye.

11–14 The diagnostic term that describes visual examination of the eye is

____________________ / _____ / ____________________.

11–15 Nerve fibers unite at the (9) optic discand form the (10) optic nerve.

Because the optic disk has no rods or cones for vision, it is known as the blind spot.

The optic nerve transmits impulses to the brain for processing visual information.

Label the two structures in Figure 11-1.

11–16 An ophthalm/o/logist is a physician who specializes in disorders and

treatment of the ____________________.

Frame 11–3to Frame 11–16

Eyes • CHAPTER 11 513513

kerat/o

kerat/o/tomy

kĕr-ă-TŎT-ō-mē

ŏf-THĂL-mō

instrument

ophthalm/o/scopy

ŏf-thăl-MŎS-kō-pē

eye(s)

scler/itis

sklĕ-RĪ-tĭs

scler/o/malacia

sklĕ-rō-mă-LĀ-shē-ă