Page 1 of 123
Certified Ophthalmic Assistant Exam 2026-2027
COMPLETE 450 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
Certified Ophthalmic Assistant Exam
QUESTION: When replacing the projector's lamp, it is important to
A. leave the lamp housing on the projector
B. wait a few minutes after it is turned off
C. Disassemble the lamp reflector
D. Clean it with alcohol - ANSWER-B wait a few minutes after it is turned off
QUESTION: The exposed lens surface of an eyepiece should be dusted periodically with a... -
ANSWER-camel hair brush
QUESTION: What two items are used to clean the retinoscopy lens, polarizing lens, red lens, and
maddoc rod lens? - ANSWER-cotton tip swab and glass cleaner
,Page 2 of 123
QUESTION: Routine maintenance of a phoropter should include... - ANSWER-1. protecting the
phoropter with a dust cover when not in use
2. cleaning the back lenses of photopter with glass cleaner
3. cleaning off dust on engrossed lenses with an ear syringe
QUESTION: calibration of the application tonometer is checked by - ANSWER-using a measured
weight attached to the tonometer balancing arm at 0, 2, and 6
QUESTION: a Lens with a focal length of 2 meters has a power of - ANSWER-0.5D
QUESTION: What part of the spectacle frame connets the two lenses? - ANSWER-bridge
QUESTION: The measurement used to determine the distance between the optical centers of
spectacle lenses is the - ANSWER-pupillary distance
,Page 3 of 123
QUESTION: The optical centers of spectacles lenses must be properly aligned in order to avoid
what effect? - ANSWER-prismatic
QUESTION: What is the reading portion of a bifocal prescription called? - ANSWER-addition
QUESTION: Which process is useful for measuring corneal astigmatism? - ANSWER-Keratometry
QUESTION: The results of a keratometry can be expressed in - ANSWER-diopters
QUESTION: Ub keratometry, if the power of the vertical meridian is greater than the power of
the horizontal meridian, the patient has...
A. With the rule astigmatism
B. Against the rule astigmatism - ANSWER-with-the-rule astigmatism
QUESTION: Corneal curvature measurement is vital to ensure that contact lens
A. touches the corneal surface
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B> touches the conjunctival surface
C. rests on the corena
D. rests on the tear film - ANSWER-C. rests on the cornea
QUESTION: The dioptric power of the cornea is determined by - ANSWER-keratometer readings
QUESTION: What is the MAIN purpose of wearing impact resistant rather than ordinary glasses
in an industrial setting? - ANSWER-Prevent ocular injury
Q; Which of the following conditions is NOT hereditary?
A. Migraines
B. Diabetes
C. Nystagmus
D. Conjunctivitis - ANSWER-D. COnjunctivitis
Certified Ophthalmic Assistant Exam 2026-2027
COMPLETE 450 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
Certified Ophthalmic Assistant Exam
QUESTION: When replacing the projector's lamp, it is important to
A. leave the lamp housing on the projector
B. wait a few minutes after it is turned off
C. Disassemble the lamp reflector
D. Clean it with alcohol - ANSWER-B wait a few minutes after it is turned off
QUESTION: The exposed lens surface of an eyepiece should be dusted periodically with a... -
ANSWER-camel hair brush
QUESTION: What two items are used to clean the retinoscopy lens, polarizing lens, red lens, and
maddoc rod lens? - ANSWER-cotton tip swab and glass cleaner
,Page 2 of 123
QUESTION: Routine maintenance of a phoropter should include... - ANSWER-1. protecting the
phoropter with a dust cover when not in use
2. cleaning the back lenses of photopter with glass cleaner
3. cleaning off dust on engrossed lenses with an ear syringe
QUESTION: calibration of the application tonometer is checked by - ANSWER-using a measured
weight attached to the tonometer balancing arm at 0, 2, and 6
QUESTION: a Lens with a focal length of 2 meters has a power of - ANSWER-0.5D
QUESTION: What part of the spectacle frame connets the two lenses? - ANSWER-bridge
QUESTION: The measurement used to determine the distance between the optical centers of
spectacle lenses is the - ANSWER-pupillary distance
,Page 3 of 123
QUESTION: The optical centers of spectacles lenses must be properly aligned in order to avoid
what effect? - ANSWER-prismatic
QUESTION: What is the reading portion of a bifocal prescription called? - ANSWER-addition
QUESTION: Which process is useful for measuring corneal astigmatism? - ANSWER-Keratometry
QUESTION: The results of a keratometry can be expressed in - ANSWER-diopters
QUESTION: Ub keratometry, if the power of the vertical meridian is greater than the power of
the horizontal meridian, the patient has...
A. With the rule astigmatism
B. Against the rule astigmatism - ANSWER-with-the-rule astigmatism
QUESTION: Corneal curvature measurement is vital to ensure that contact lens
A. touches the corneal surface
, Page 4 of 123
B> touches the conjunctival surface
C. rests on the corena
D. rests on the tear film - ANSWER-C. rests on the cornea
QUESTION: The dioptric power of the cornea is determined by - ANSWER-keratometer readings
QUESTION: What is the MAIN purpose of wearing impact resistant rather than ordinary glasses
in an industrial setting? - ANSWER-Prevent ocular injury
Q; Which of the following conditions is NOT hereditary?
A. Migraines
B. Diabetes
C. Nystagmus
D. Conjunctivitis - ANSWER-D. COnjunctivitis
