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Specialty Testing Procedures
Terms in this set (28)
Keratometry is the measurement of
The axis of the keratometer reading is set when
locating the primary meridian measurement
another term for keratometry is
An example of indentation tonometry is
A tonometer that needs to be used with corneal anesthetic and fluorescein is
A tonometer that will release a puff of air on the cornea is
The probe of the ____ tonometer must be covered with a ocu-film tip cover to prevent patient infection and cross contamination
The best electronic hand-held tonometer that is portable is the:
the instrument used to detemine the length of the eyeball in order to calculate properly the power of the intraocular lens to be implanted after cataract removal is:
The findings from keratometer indicate the following: 44.50 @ 180; 43.00. This indicates what type of corneal astigmatism?
The findings from keratometry indicate the following: 44.50 @180; 43.00. How much corneal astigmatism is present?
The findings from keratometry indicate the following: 44.50@180; 43.00. Using Javal's Rule, estimate the total ocular astigmatism.
The three transparent structures that compose what is termed the ocular media are the?
Cornea, lens, and vitreous
The interferometer measures visual acuity potential by using a laser or special light beams to?
Project parallel lines onto the macula
Pachymetry is useful determining the?
Ability of the cornea to withstand the stress of surgery
Of the following, the procedure used for counting endothelial cells of the cornea is?
An acuity chart printed in faint gray rather than in sharp black on white is useful for measuring?
Fluorescein angiography is valuable method of detecting and documenting?
abnormalities in ocular blood vessels
Of the following, the procedure most useful in calculating the power of an artificial lens to be implanted in patient who has undergone cataract extraction is?
The printed circles on a visual filed chart refer to the?
Circles of eccentricity at 10 degree intervals
On a visual field chart, in kinetic perimetry, a contour obtained with a single target of particular size and brightness is?
Generally, the 0 degree point on visual field charts of both the right and the left eye is located at the?
extreme right on the horizontal meridian, and the other meridians are measured progressively in a counterclockwise diretion
A defect in the inferior temporal retina will affect the?
Superior nasal field of vision
On the visual field charts, the physiologic blind spot appears in the?
Temporal visual field
Two examples of static perimetry are?
Threshold perimetry and suprathreshold perimetry
One disadvantage of Goldmann perimetry is that it?
requires the examiner to move the target at the same speed in each direction
One advantage of the computerized threshold perimetry is that it?
is more sensitive in detecting shallow defects than kinetic perimetry
For accurate perimtery, the patient's near correction must be in place if the patient?
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