Exam (elaborations)
COT-Certified Ophthalmic Technician
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COT-Certified Ophthalmic Technician
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Name: Score:129 Multiple choice questions
Term 1 of 129
10 Diopters (each lens)
Indicates the need for more minus power
The highest range for ground-in prism
transient viral vesicles that infect the facial area
555 microns
Term 2 of 129
Index of Refraction
Solid and fluid filled
Speed of Light/Speed of Light in Substance (formula)
Used for Earlier detection Of visual Field loss
20 feet (6 meters) and beyond
Definition 3 of 129
Determines the index of refraction: speed of light in air/speed of light through the substance
Snell's Law
Imbert-fick Principle
Prentice's Rule
Abduction
,Term 4 of 129
Sympathomimetics
Imperfections of the optical system, such as refractive errors, and those caused by laser
refractive surgery
Constricts the pupils, slows down HR, dilates blood vessels, and activates digestion ("rest &
digest")
Ocular emergency following cataract surgery when a patient presents with symptoms of a
painful red eye and decreased vision within the first week
Stimulates the sympathetic nervous system ("fight or flight")--dilates pupils, increases HR,
inhibits digestion
Definition 5 of 129
Amount the eyes can turn inward before double vision occurs
Aberrations
Evisceration
Fusional Convergence Amplitude
Metal Test Spheres
Term 6 of 129
Miotics
Drugs which activate digestion, slow down heart rate, and constrict the pupils
Should not be used in patients with active iritis
Formula for calculating prismatic effect induced at any point in the lens
Distort the sound beam in immersion A-scan
,Definition 7 of 129
Laser which is used to coagulate blood or seal off blood vessels
Argon/Blue-Green Light Laser
Epinephrine/intravenous Cortisone/benadryl
Rapd/marcus-gunn Pupil
Exciter Filter
Definition 8 of 129
round shaped, Gram stain positive
staph bacteria
fungus
staphylococcus aureus
diabetic retinopathy
Definition 9 of 129
Visual blending of two similar (not identical) images, one falling on each retina, into one, with
visual perception of solidity and depth
V1 then distributes the information to where
Index of refraction
Strabismus (cross eyed)
Stereopsis (depth perception)
, Term 10 of 129
Cobalt/UV Filter
Instruments used for lacrimal irrigation
Indicated in hysterical patients
Slit lamp filter used in conjunction with fluorescein to evaluate fluorescein patterns with
rigid and silicon hydrogel contact lenses
Laser which is used to coagulate blood or seal off blood vessels
Definition 11 of 129
Instruments used for lacrimal irrigation
Argon/blue-green Light Laser
Epinephrine/intravenous Cortisone/benadryl
Rapd/marcus-gunn Pupil
Punctum Dilator/Lacrimal Needle or Probe
Definition 12 of 129
Provided by the manufacturer, with known radius of curvature, to be used for the calibration of
the manual keratometer
Axial Length Measurement
Sterile
Abduction
Metal Test Spheres
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