Page 1928 - Saunders Comprehensive Review For NCLEX-RN

and to wear sunglasses, if staying
indoors is not possible.
f. Inform the client that the photophobia
will continue until pupil size returns to
normal.
B. Computed tomography (CT)
1. Description
a. The test is performed to examine the
eye, bony structures around the eye,
and extraocular muscles.
b. Contrast material may be used unless
eye trauma is suspected.
2. Interventions
a. No special client preparation or follow-
up care is required.
b. Instruct the client that he or she will be
positioned in a confined space and will
need to keep the head still during the
procedure.
c. Ask about and document allergies
and/or previous exposure to contrast.
C. Slit lamp
1. Description
a. Allows examination of the anterior
ocular structures under microscopic
magnification
b. The client leans on a chin rest to
stabilize the head while a narrowed
beam of light is aimed so that it
illuminates only a narrow segment of
the eye.

2. Interventions: Advise the client about the

brightness of the light and the need to look forward at
a point over the examiner’s ear.
D. Corneal staining
1. Description
a. A topical dye is instilled into the
conjunctival sac to outline
irregularities of the corneal surface that
are not easily visible.
b. The eye is viewed through a blue filter,
and a bright green color indicates areas
of a nonintact corneal epithelium.
2. Interventions
a. If the client wears contact lenses, the
lenses must be removed.
b. The client is instructed to blink after the

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