COT JCAHPO EXAM-STUDY GUIDE
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) A GRADE
A +2.00 diopter lens will bring light from a distant source to
focus at:
A. 0.5m
B 2.0 cm
C. 2.0 m
D. 5.0 cm - correct answer- A. 0.5 m
A 32-year old male who has recently changed from PMMA
contact lens to soft contact lens complains that his vision is not
as sharp as previously. What is the most likely explanation?
A. accommodative spasm
B. Corneal neovascularization from previous hard contact lens
wear
C. Improper choice of power of soft lens
D. Uncorrected astigmatic refractive error - correct answer-
D. Uncorrected astigmatic refractive error
,A 79 year old female is taking medication for open angle
glaucoma. She has a syncopal episode and is found to have a
pulse rate of 36 beats per minute. Which of the following
glaucoma indications is MOST likely responsible?
A. Acetazolamide
B. Mannitol
C. Pilocarpine
D. Timolol - correct answer- D. Timolol
A child with the tentative diagnosis of an intraocular tumor is
referred to a pediatric ophthalmologist. Which following COULD
you tell the parents?
A. Is there a family history of ocular tumors?
B. Pediatric ophthalmologists are very knowledgeable in the
diagnosis and treatment of intraocular tumors.
C. Tumors of this type may be fatal
D. Your child will see normally following treatment - correct
answer- B. Pediatric ophthalmologists are very
knowledgeable in the diagnosis and treatment of intraocular
tumors.
A contact lens fit 'steeper than K' means that:
A. A minus tear lens is created
,B. If corneal radius 7.6mm, the contact lens radius could be
7.8mm
C. If the cornea measures 44.00 diopters, the contact lens
curvature could be 44.50 diopters.
D. The base curve of the contact lens has the same radius of
curvature as the anterior cornea. - correct answer- C. If the
cornea measures 44.00 diopters, the contact lens curvature
could be 44.50 diopters.
A convergence movement is noticed after removing an occluder
from the patients eye. The patient is:
A. Esophoric
B. Esotropic
C. Exophoric
D. Exotropia - correct answer- C. Exophoric
A cycloplegic refraction is performed:
A. To determine the true refractive error of the eye
B. On the elderly
C. With balancing
D. without refinement - correct answer- A. To determine the
true refractive error of the eye
, A hysterical field will:
A. be normal only in one eye
B. Be severely constricted
C. Have an abnormal blind spot
D. Reveal a star-shaped pattern - correct answer- A. be
normal only in one eye
A K-reading of 44.50 @ 180/ 41.50 @ 90 indicates which of the
following:
A. 3 diopters of corneal astigmatism against the rule
B. 3 diopters of corneal astigmatism with the rule
C. spherical cornea
D. Irregular astigmatism - correct answer- A. 3 diopters of
corneal astigmatism against the rule
A lens with the formula +2.00 -3.00 x 090 degrees has what
power at 90 degrees and 180 degrees, respectively:
A. +2.00 and -1.00
B. +2.00 and -3.00
C. +5.00 and +3.00
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) A GRADE
A +2.00 diopter lens will bring light from a distant source to
focus at:
A. 0.5m
B 2.0 cm
C. 2.0 m
D. 5.0 cm - correct answer- A. 0.5 m
A 32-year old male who has recently changed from PMMA
contact lens to soft contact lens complains that his vision is not
as sharp as previously. What is the most likely explanation?
A. accommodative spasm
B. Corneal neovascularization from previous hard contact lens
wear
C. Improper choice of power of soft lens
D. Uncorrected astigmatic refractive error - correct answer-
D. Uncorrected astigmatic refractive error
,A 79 year old female is taking medication for open angle
glaucoma. She has a syncopal episode and is found to have a
pulse rate of 36 beats per minute. Which of the following
glaucoma indications is MOST likely responsible?
A. Acetazolamide
B. Mannitol
C. Pilocarpine
D. Timolol - correct answer- D. Timolol
A child with the tentative diagnosis of an intraocular tumor is
referred to a pediatric ophthalmologist. Which following COULD
you tell the parents?
A. Is there a family history of ocular tumors?
B. Pediatric ophthalmologists are very knowledgeable in the
diagnosis and treatment of intraocular tumors.
C. Tumors of this type may be fatal
D. Your child will see normally following treatment - correct
answer- B. Pediatric ophthalmologists are very
knowledgeable in the diagnosis and treatment of intraocular
tumors.
A contact lens fit 'steeper than K' means that:
A. A minus tear lens is created
,B. If corneal radius 7.6mm, the contact lens radius could be
7.8mm
C. If the cornea measures 44.00 diopters, the contact lens
curvature could be 44.50 diopters.
D. The base curve of the contact lens has the same radius of
curvature as the anterior cornea. - correct answer- C. If the
cornea measures 44.00 diopters, the contact lens curvature
could be 44.50 diopters.
A convergence movement is noticed after removing an occluder
from the patients eye. The patient is:
A. Esophoric
B. Esotropic
C. Exophoric
D. Exotropia - correct answer- C. Exophoric
A cycloplegic refraction is performed:
A. To determine the true refractive error of the eye
B. On the elderly
C. With balancing
D. without refinement - correct answer- A. To determine the
true refractive error of the eye
, A hysterical field will:
A. be normal only in one eye
B. Be severely constricted
C. Have an abnormal blind spot
D. Reveal a star-shaped pattern - correct answer- A. be
normal only in one eye
A K-reading of 44.50 @ 180/ 41.50 @ 90 indicates which of the
following:
A. 3 diopters of corneal astigmatism against the rule
B. 3 diopters of corneal astigmatism with the rule
C. spherical cornea
D. Irregular astigmatism - correct answer- A. 3 diopters of
corneal astigmatism against the rule
A lens with the formula +2.00 -3.00 x 090 degrees has what
power at 90 degrees and 180 degrees, respectively:
A. +2.00 and -1.00
B. +2.00 and -3.00
C. +5.00 and +3.00
