IJCAHPO COA EXAM2025 LATEST
QUESTIONS AND DETAILED CORRECT
ANSWERS | VERIFIED ANSWERS | A+
GRADED 2025/2026
Changing the base curve of a contact lens changes the
fitting characteristics of that lens due to a change in
sagittal depth. Increasing the base curve radius of a
contact lens while maintaining the same diameter will
cause the lens to fit:
A. steeper and tighter
B. flatter and looser
C. higher and tighter
D. lower and looser Correct Answer B. flatter and looser
The three-color receptors found in cones are
A. blue, green and yellow
B. red, green and blue
C. red, green and yellow
D. red, yellow and blue Correct Answer B. red, green and
blue
What is a symptom if hyperthyroidism?
A. low voice
B. dry skin
C. weight gains
,D. shortness of breath Correct Answer D. shortness of
breath
Which one of the following stains is useful for determining
the inflammatory cellular response to a particular agent?
A. Glemsa's
B. Gram's
C. Sabouraud's
D. Safranin Correct Answer A. Glemsa's
The fact that most glasses have a downward tilt to
minimize oblique astigmatism is called
A. interpupillary distance
B. pantoscopic tilt
C. oblique astigmastism
D. image displacement Correct Answer B. pantoscopic tilt
What cycloplegic agent produces the longest lasting
effect?
A. homatropine
B. atropine sulfate
C. tropicamide
D. cyclopentolate Correct Answer B. atropine sulfate
The strength of the middle segment in a trifocal lens is
A. -1.00D weaker than the reading segment add.
B. 50% of the strength of the reading segment add.
,C. difficult to measure.
D. stronger in magnification than the Correct Answer B.
50% of the strength of the reading segment add
Which test uses prisms to center the corneal reflex?
A. Hess
B. Worth four-dot
C. Hirschberg
D. Krimsky Correct Answer D. Krimsky
Skin preparation around the preoperative eye is performed
using an alternative technique of cleansing with:
A. soap and water
B. antiseptic solution and rinsing with water
C. water, then applying antiseptic solution
D. water then drying with a sterile towel Correct Answer B.
antiseptic solution and rinsing with water
What is the ONLY accurate method for measuring
pupillary distance?
A. pupil gauge
B. light reflex method
C. ruler
D. dark reflex method Correct Answer B. light reflex
method
What type of corneal astigmatism does a keratometry
reading of 42.25/44.75x90 indicate?
, A. None
B. Oblique
C. with-the-rule
D. against-the-rule Correct Answer C. with-the-rule
What is the name of the visual receptors that process
color?
A. Rods
B. Cones
C. Ganglion
D. Bipolar Correct Answer B. Cones
The autoplot tangent screen measures the
A. supra threshold kinetic field
B. supra threshold static field
C. threshold kinetic field
D. threshold static field of vision Correct Answer A. supra
threshold kinetic field
A latent deviation that can only be observed when
binocular fusion is disrupted is called a(n)
A. tropia
B. hemianopia
C. phoria
D. ametropia Correct Answer C. phoria
What is the central field of vision?
QUESTIONS AND DETAILED CORRECT
ANSWERS | VERIFIED ANSWERS | A+
GRADED 2025/2026
Changing the base curve of a contact lens changes the
fitting characteristics of that lens due to a change in
sagittal depth. Increasing the base curve radius of a
contact lens while maintaining the same diameter will
cause the lens to fit:
A. steeper and tighter
B. flatter and looser
C. higher and tighter
D. lower and looser Correct Answer B. flatter and looser
The three-color receptors found in cones are
A. blue, green and yellow
B. red, green and blue
C. red, green and yellow
D. red, yellow and blue Correct Answer B. red, green and
blue
What is a symptom if hyperthyroidism?
A. low voice
B. dry skin
C. weight gains
,D. shortness of breath Correct Answer D. shortness of
breath
Which one of the following stains is useful for determining
the inflammatory cellular response to a particular agent?
A. Glemsa's
B. Gram's
C. Sabouraud's
D. Safranin Correct Answer A. Glemsa's
The fact that most glasses have a downward tilt to
minimize oblique astigmatism is called
A. interpupillary distance
B. pantoscopic tilt
C. oblique astigmastism
D. image displacement Correct Answer B. pantoscopic tilt
What cycloplegic agent produces the longest lasting
effect?
A. homatropine
B. atropine sulfate
C. tropicamide
D. cyclopentolate Correct Answer B. atropine sulfate
The strength of the middle segment in a trifocal lens is
A. -1.00D weaker than the reading segment add.
B. 50% of the strength of the reading segment add.
,C. difficult to measure.
D. stronger in magnification than the Correct Answer B.
50% of the strength of the reading segment add
Which test uses prisms to center the corneal reflex?
A. Hess
B. Worth four-dot
C. Hirschberg
D. Krimsky Correct Answer D. Krimsky
Skin preparation around the preoperative eye is performed
using an alternative technique of cleansing with:
A. soap and water
B. antiseptic solution and rinsing with water
C. water, then applying antiseptic solution
D. water then drying with a sterile towel Correct Answer B.
antiseptic solution and rinsing with water
What is the ONLY accurate method for measuring
pupillary distance?
A. pupil gauge
B. light reflex method
C. ruler
D. dark reflex method Correct Answer B. light reflex
method
What type of corneal astigmatism does a keratometry
reading of 42.25/44.75x90 indicate?
, A. None
B. Oblique
C. with-the-rule
D. against-the-rule Correct Answer C. with-the-rule
What is the name of the visual receptors that process
color?
A. Rods
B. Cones
C. Ganglion
D. Bipolar Correct Answer B. Cones
The autoplot tangent screen measures the
A. supra threshold kinetic field
B. supra threshold static field
C. threshold kinetic field
D. threshold static field of vision Correct Answer A. supra
threshold kinetic field
A latent deviation that can only be observed when
binocular fusion is disrupted is called a(n)
A. tropia
B. hemianopia
C. phoria
D. ametropia Correct Answer C. phoria
What is the central field of vision?
