1. Contraction or relaxation of the ciliary body: a. allows voluntary blink- ing. b. changes lens thickness. c. regulates peripheral vi- sion. d. sends light impulses to the brain. e. regulates tear produc- tion. 2. Term infants have a visual acuity of about: a. 20/20. b. 20/100. c. 20/200. d. 20...
1 contraction or relaxation of the ciliary body a allows voluntary blink ing b changes lens thickness c regulates peripheral vi sion d sends light impulses to the brain e regulates tear
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NURSING 45001
NURSING 45001
NURSING 45001
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CH. 12 Seidel's Guide to Physical
Examination
1. Contraction or relaxation
ANS: B
of the ciliary body:
The lens is circularly supported by a
framework of fibers from the ciliary
a. allows voluntary
body, and contrac- tion or relaxation of
blink- ing.
b. changes lens thickness. this structure results in a change in the
c. regulates peripheral vi- thickness of the lens, allowing for
sion. accommodation as needed. Voluntary
d. sends light impulses to blinking, peripheral vision, tear
the brain. production, and impuls- es to the brain
e. regulates tear are not controlled by the ciliary body.
produc- tion.
2. Term infants have a
visual acuity of about:
ANS: E
a. 20/20. Term infants are hyperopic, with a
b. 20/100. visual acuity of less than 20/400.
c. 20/200.
d. 20/300.
e. 20/400
3. At what age does an infant
usually develop the ability
to distinguish color? ANS: C
By 6 months of age, vision has
a. At birth developed so that colors can be
b. 2 months differentiated.
c. 6 months
d. 12 months
e. 16 months
4. An increased level of
lysozyme in the
tears
will occur normally ANS: D
during which life stage? Because of rising hormonal levels,
lysozyme is present in an increased
a. Adolescence amount in the tears during pregnancy.
b. Childhood Tears are not affected by increased
1/
, CH. 12 Seidel's Guide to Physical
Examination
lysozyme at any other
stage in life.
2/
, CH. 12 Seidel's Guide to Physical
Examination
c. Infancy
d. Pregnancy
e. Older adults
5. Which of the following is a ANS: C
relatively benign condition Because of falling intraocular pressure
that may occur during dur- ing the late stages of pregnancy,
preg- nancy or labor? hemorrhages may occur in the
conjunctiva and resolve spon-
a. Macular degeneration taneously. Papilledema is never a benign
b. Papilledema con- dition, and presbyopia, macular
c. Subconjunctival degeneration, and cupping of the optic
hemor- rhage disc occur in older adults.
d. Cupping of the optic
disc
e. Presbyopia
6. A condition that typically ANS: A
develops by the age of By 45 years of age, a condition known as
45 years is: presbyopia develops that involves a
weakening of accommodation. Hyperopia
a. presbyopia. occurs in early infancy; myopia and
b. hyperopia. astigmatism can occur at any time.
c. myopia. Cataracts generally develop in older
d. astigmatism. adults.
e. cataracts.
7. Which of the following
find- ings, when seen in an ANS: D
in- fant, is most ominous? The absence of a red reflex, either by
phys- ical examination or by white
a. Difficulty tracking pupils with flash photography, is
ob- jects with the eyes indicative of retinoblastoma, a serious
b. Appearing to have retina tumor. The other choices are ex-
better peripheral than pected at this age
central vi- sion
c. Blinking when bright
light is directed at face
d. White pupils on pho-
tographs
3/
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