ABO CERTIFICATION EXAM 2026 (VERSION A AND B) COMPLETE 200 QUESTIONS AND
CORRECT DETAILED ANSWERS/NEWEST UPDATE!!!
What is the wavelength of ultra violet radiation?
A. shorter than visible blue waves
B. longer than visible red waves
C. 580 nanometers
D. between 380 and 720 nanometers - (Correct Answer)-A. shorter than visible blue waves
A lens with two curves on the front surface is a:
A. myopic lens
B. toric lens
C. spherical lens
D. plus cylinder lens - (Correct Answer)-D. plus cylinder lens
A lens reads +2.25 in the vertometer. If the ocular curve is -6.00, what is the anterior curve?
A. +2.25
B. +6.25
C. +8.25
D. +10.25 - (Correct Answer)-C. +8.25
The patient's interpupillary distance is 68 and the frame GCD is 76. What is the required
decentration for each eye?
A. 8
B. 6
C. 4
D. 2 - (Correct Answer)-C. 4
A prescription, +1.00 -2.25 x 090, would indicate which of the following conditions?
, 2
A. compound hyperopic astigmatism
B. simple myopic astigmatism
C. compound myopic astigmatism
D. mixed astigmatism - (Correct Answer)-D. mixed astigmatism
Hyperopic corrective lenses for presbyopic patients will produce what prismatic effect in the
reading area?
A. base up
B. base out
C. base down
D. base in - (Correct Answer)-A. base up
Keratitis is an inflammation of what?
A. conjunctiva
B. cornea
C. sclera
D. Retina - (Correct Answer)-B. cornea
The reading only prescription for a -4.25 -1.25 x 090, add +2.00 is:
A. -2.25 -1.25 x 090
B. -6.25 -1.25 x 090
C. -2.25 sphere
D. +2.00 sphere - (Correct Answer)-A. -2.25 -1.25 x 090
A plastic photochromic lens is helpful in what two areas due to uniform tint?
A. bifocals and high plus lenses
B. plano and low plus lenses
, 3
C. fused bifocals and low plus lenses
D. fused trifocals and low plus lenses - (Correct Answer)-A. bifocals and high plus lenses
Which of the following UV areas is completely absorbed by the atmosphere? A. UVA
B. UVB
C. UVC
D. UVD - (Correct Answer)-C. UVC
Which of the following frame materials is used most often in sports frames due to its resistance
to breakage? A. optyl
B. propionate
C. acetate
D. polycarbonate - (Correct Answer)-D. polycarbonate
Of the following frame materials, which one exhibits the best "shape memory" when heated?
A. carbon
B. optyl
C. nylon
D. aluminum - (Correct Answer)-B. optyl
The MRP is located at the lens optical center:
A. at all times
B. when base out prism is prescribed
C. when single vision lenses are prescribed
D. when no prism is prescribed - (Correct Answer)-D. when no prism is prescribed
, 4
Upon final inspection of your patient's glasses, you determine the OCD does not equal the PPD.
Now you must determine the induced prism.
OD +1.00 sph OS +2.50 sph
PD ordered = 62mm
PD received = 66mm
A. OD=0.20BO & OS=0.50BO
B. OD=0.20BI & OS=0.50BI
C. OD=0.20BI & OS=0.90BO
D. OD=0.40BI & OS=0.90BI - (Correct Answer)-A. OD=0.20BO & OS=0.50BO
Which of the following has the greatest effect on magnification?
A. lens power
B. base curve
C. vertex distance
D. center thickness - (Correct Answer)-A. lens power
Which of the following is the most impact resistant lens material?
A. heat-treated glass
B. chem-treated glass
C. CR-39
D. polycarbonate - (Correct Answer)-D. polycarbonate
Using a Geneva lens Clock, you determine the following lens information: Front surface curve =
+8.25
Back surface curve highest reading = -6.50
Back surface curve lowest reading = -4.75
What is the power of the lens?
CORRECT DETAILED ANSWERS/NEWEST UPDATE!!!
What is the wavelength of ultra violet radiation?
A. shorter than visible blue waves
B. longer than visible red waves
C. 580 nanometers
D. between 380 and 720 nanometers - (Correct Answer)-A. shorter than visible blue waves
A lens with two curves on the front surface is a:
A. myopic lens
B. toric lens
C. spherical lens
D. plus cylinder lens - (Correct Answer)-D. plus cylinder lens
A lens reads +2.25 in the vertometer. If the ocular curve is -6.00, what is the anterior curve?
A. +2.25
B. +6.25
C. +8.25
D. +10.25 - (Correct Answer)-C. +8.25
The patient's interpupillary distance is 68 and the frame GCD is 76. What is the required
decentration for each eye?
A. 8
B. 6
C. 4
D. 2 - (Correct Answer)-C. 4
A prescription, +1.00 -2.25 x 090, would indicate which of the following conditions?
, 2
A. compound hyperopic astigmatism
B. simple myopic astigmatism
C. compound myopic astigmatism
D. mixed astigmatism - (Correct Answer)-D. mixed astigmatism
Hyperopic corrective lenses for presbyopic patients will produce what prismatic effect in the
reading area?
A. base up
B. base out
C. base down
D. base in - (Correct Answer)-A. base up
Keratitis is an inflammation of what?
A. conjunctiva
B. cornea
C. sclera
D. Retina - (Correct Answer)-B. cornea
The reading only prescription for a -4.25 -1.25 x 090, add +2.00 is:
A. -2.25 -1.25 x 090
B. -6.25 -1.25 x 090
C. -2.25 sphere
D. +2.00 sphere - (Correct Answer)-A. -2.25 -1.25 x 090
A plastic photochromic lens is helpful in what two areas due to uniform tint?
A. bifocals and high plus lenses
B. plano and low plus lenses
, 3
C. fused bifocals and low plus lenses
D. fused trifocals and low plus lenses - (Correct Answer)-A. bifocals and high plus lenses
Which of the following UV areas is completely absorbed by the atmosphere? A. UVA
B. UVB
C. UVC
D. UVD - (Correct Answer)-C. UVC
Which of the following frame materials is used most often in sports frames due to its resistance
to breakage? A. optyl
B. propionate
C. acetate
D. polycarbonate - (Correct Answer)-D. polycarbonate
Of the following frame materials, which one exhibits the best "shape memory" when heated?
A. carbon
B. optyl
C. nylon
D. aluminum - (Correct Answer)-B. optyl
The MRP is located at the lens optical center:
A. at all times
B. when base out prism is prescribed
C. when single vision lenses are prescribed
D. when no prism is prescribed - (Correct Answer)-D. when no prism is prescribed
, 4
Upon final inspection of your patient's glasses, you determine the OCD does not equal the PPD.
Now you must determine the induced prism.
OD +1.00 sph OS +2.50 sph
PD ordered = 62mm
PD received = 66mm
A. OD=0.20BO & OS=0.50BO
B. OD=0.20BI & OS=0.50BI
C. OD=0.20BI & OS=0.90BO
D. OD=0.40BI & OS=0.90BI - (Correct Answer)-A. OD=0.20BO & OS=0.50BO
Which of the following has the greatest effect on magnification?
A. lens power
B. base curve
C. vertex distance
D. center thickness - (Correct Answer)-A. lens power
Which of the following is the most impact resistant lens material?
A. heat-treated glass
B. chem-treated glass
C. CR-39
D. polycarbonate - (Correct Answer)-D. polycarbonate
Using a Geneva lens Clock, you determine the following lens information: Front surface curve =
+8.25
Back surface curve highest reading = -6.50
Back surface curve lowest reading = -4.75
What is the power of the lens?
