COT-Certified Ophthalmic Technician
Questions & Answers 100% Correct!!
Informed Consent Form - ANSWERThe patient signs this prior to surgery; it outlines the procedure
and the RBAs
Thyroid Disease - ANSWERThe systemic disease associated with eye findings referred to as Graves'
Disease
Diabetic Retinopathy - ANSWERDisease which is indicated by the presence of microaneurysms,
dot/blot hemes, and lipid exudates from a leakage of the retinal vessels
Epinephrine/Intravenous Cortisone/Benadryl - ANSWERMedications that should be kept on hand in
case of severe allergic reaction to a drug
Metal Test Spheres - ANSWERProvided by the manufacturer, with known radius of curvature, to be
used for the calibration of the manual keratometer
40 Diopters - ANSWERThe highest range for Fresnel press-on prism
10 Diopters (each lens) - ANSWERThe highest range for ground-in prism
Prentice's Rule - ANSWERFormula for calculating prismatic effect induced at any point in the lens
Prince Rule - ANSWERMeasures near point of accommodation - position closest to eye where small
object can be kept in sharp focus by maximal accommodation. Also measures bifocal power
Snell's Law - ANSWERDetermines the index of refraction: speed of light in air/speed of light through
the substance
Prism Displacement Formula - ANSWERP=C/D
, Refractive Index of Crown Glass - ANSWER1.523
Compound Myopic Astigmatism (CMA) - ANSWERRepresented by minus spherical and minus
cylindrical lenses
Clinical Definition of Infinity - ANSWER20 feet (6 meters) and beyond
Punctum Dilator/Lacrimal Needle or Probe - ANSWERInstruments used for lacrimal irrigation
Electrolysis - ANSWERProcedure which treats trichiasis
Argon/Blue-Green Light Laser - ANSWERLaser which is used to coagulate blood or seal off blood
vessels
Endophthalmitis - ANSWEROcular emergency following cataract surgery when a patient presents
with symptoms of a painful red eye and decreased vision within the first week
Trabeculectomy - ANSWERGlaucoma surgery that permits aqueous to filter out of the anterior
chamber and form a conjunctival bleb
Enucleation - ANSWERTotal removal of the eye globe
Evisceration - ANSWERRemoval of the contents of the eye, leaving the outer shell with the muscles
attached
Physiologic Blind Spot - ANSWER15 degrees Temporal to Fixation
1,000 Apostilbs or 1430 Lumens - ANSWERLight meter readings for calibrating a Goldmann perimeter
Red Color Stimulus - ANSWERUsed on an automated perimeter test for detecting macular defects
Blue Color Stimulus on Yellow Background - ANSWERUsed for earlier detection of visual field loss
Questions & Answers 100% Correct!!
Informed Consent Form - ANSWERThe patient signs this prior to surgery; it outlines the procedure
and the RBAs
Thyroid Disease - ANSWERThe systemic disease associated with eye findings referred to as Graves'
Disease
Diabetic Retinopathy - ANSWERDisease which is indicated by the presence of microaneurysms,
dot/blot hemes, and lipid exudates from a leakage of the retinal vessels
Epinephrine/Intravenous Cortisone/Benadryl - ANSWERMedications that should be kept on hand in
case of severe allergic reaction to a drug
Metal Test Spheres - ANSWERProvided by the manufacturer, with known radius of curvature, to be
used for the calibration of the manual keratometer
40 Diopters - ANSWERThe highest range for Fresnel press-on prism
10 Diopters (each lens) - ANSWERThe highest range for ground-in prism
Prentice's Rule - ANSWERFormula for calculating prismatic effect induced at any point in the lens
Prince Rule - ANSWERMeasures near point of accommodation - position closest to eye where small
object can be kept in sharp focus by maximal accommodation. Also measures bifocal power
Snell's Law - ANSWERDetermines the index of refraction: speed of light in air/speed of light through
the substance
Prism Displacement Formula - ANSWERP=C/D
, Refractive Index of Crown Glass - ANSWER1.523
Compound Myopic Astigmatism (CMA) - ANSWERRepresented by minus spherical and minus
cylindrical lenses
Clinical Definition of Infinity - ANSWER20 feet (6 meters) and beyond
Punctum Dilator/Lacrimal Needle or Probe - ANSWERInstruments used for lacrimal irrigation
Electrolysis - ANSWERProcedure which treats trichiasis
Argon/Blue-Green Light Laser - ANSWERLaser which is used to coagulate blood or seal off blood
vessels
Endophthalmitis - ANSWEROcular emergency following cataract surgery when a patient presents
with symptoms of a painful red eye and decreased vision within the first week
Trabeculectomy - ANSWERGlaucoma surgery that permits aqueous to filter out of the anterior
chamber and form a conjunctival bleb
Enucleation - ANSWERTotal removal of the eye globe
Evisceration - ANSWERRemoval of the contents of the eye, leaving the outer shell with the muscles
attached
Physiologic Blind Spot - ANSWER15 degrees Temporal to Fixation
1,000 Apostilbs or 1430 Lumens - ANSWERLight meter readings for calibrating a Goldmann perimeter
Red Color Stimulus - ANSWERUsed on an automated perimeter test for detecting macular defects
Blue Color Stimulus on Yellow Background - ANSWERUsed for earlier detection of visual field loss
