ABO EXAM SOLVED
COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS)
1. Which of the following is not a tunic of the eye?
A. Protective
B. Magnifying
C. Light sensitive
D. Nourishing - ANSWER B. Magnifying
2. What part of the eye provides approximately 43 diopters of
refractive power to the optical system?
A. Cornea
B. Crystalline lens
C. Vitreous
D. Humorous - ANSWER A. Cornea
3. Which of the following is not a layer of the cornea?
A. Decemets membrane
B. Stroma
,C. Choroid
D. Epithelium - ANSWER C. Choroid
4. Which of the following glass lenses is not a fused bifocal?
A. Curve top
B. Straight top 28
C. Executive
D. Flat top 35 - ANSWER C. Executive
5. Which of the following is not a progressive addition lens?
A. Varilux
B. Trivex
C. Adaptar
D. Kodak - ANSWER B. Trivex
6. A prism seg is designed to provide which of the following at near
only?
A. BIΔ
B. BOΔ
C. BUΔ
D. BDΔ - ANSWER A. BIΔ
, 7. The terms "pin cushion and barrel" are used with which of the
following aberrations?
A. Distortion
B. Curvature of field
C. Marginal astigmatism
D. Spherical - ANSWER A. Distortion
8. What adjustments should be made to the base curve of a lens as the
plus power increases?
A. Flattened
B. Always keep the same base curve
C. You should ask the lab technician
D. Steepened - ANSWER D. Steepened
9. Which of the following is correct for single vision reading glasses
from the following Rx- OU: -1.00+1.00x045 Add +2.00?
A. -3.00+1.00x045
B. +1.00-1.00x045
C. +2.00-1.00x135
D. +1.00+1.00x135 - ANSWER C. +2.00-1.00x135
10. Which of the following is correct for intermediate single vision
glasses from the following Rx- OU: -1.00+1.00x045 Add +2.00?
, A. +1.00-1.00x135
B. pl-1.00x045
C. pl+1.00x135
D. +1.00+1.00x045 - ANSWER A. +1.00-1.00x135
11. What is the total distance power at axis 90 of the following Rx- OU:
-1.00+1.00x045 Add +2.00?
A. Plano
B. -0.50
C. +0.50
D. -1.00 - ANSWER B. -0.50
12. What is the distance Rx spherical equivalent of the following Rx-
OU: -1.00+1.00x045 Add +2.00?
A. Plano
B. +0.50
C. -0.50
D. -1.00 - ANSWER C. -0.50
If a -5.00 lens is decentered 10 mm too far out, what prismatic effect
will be induced?
A. 0.50Δ BO
B. 5.00Δ BO
COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS)
1. Which of the following is not a tunic of the eye?
A. Protective
B. Magnifying
C. Light sensitive
D. Nourishing - ANSWER B. Magnifying
2. What part of the eye provides approximately 43 diopters of
refractive power to the optical system?
A. Cornea
B. Crystalline lens
C. Vitreous
D. Humorous - ANSWER A. Cornea
3. Which of the following is not a layer of the cornea?
A. Decemets membrane
B. Stroma
,C. Choroid
D. Epithelium - ANSWER C. Choroid
4. Which of the following glass lenses is not a fused bifocal?
A. Curve top
B. Straight top 28
C. Executive
D. Flat top 35 - ANSWER C. Executive
5. Which of the following is not a progressive addition lens?
A. Varilux
B. Trivex
C. Adaptar
D. Kodak - ANSWER B. Trivex
6. A prism seg is designed to provide which of the following at near
only?
A. BIΔ
B. BOΔ
C. BUΔ
D. BDΔ - ANSWER A. BIΔ
, 7. The terms "pin cushion and barrel" are used with which of the
following aberrations?
A. Distortion
B. Curvature of field
C. Marginal astigmatism
D. Spherical - ANSWER A. Distortion
8. What adjustments should be made to the base curve of a lens as the
plus power increases?
A. Flattened
B. Always keep the same base curve
C. You should ask the lab technician
D. Steepened - ANSWER D. Steepened
9. Which of the following is correct for single vision reading glasses
from the following Rx- OU: -1.00+1.00x045 Add +2.00?
A. -3.00+1.00x045
B. +1.00-1.00x045
C. +2.00-1.00x135
D. +1.00+1.00x135 - ANSWER C. +2.00-1.00x135
10. Which of the following is correct for intermediate single vision
glasses from the following Rx- OU: -1.00+1.00x045 Add +2.00?
, A. +1.00-1.00x135
B. pl-1.00x045
C. pl+1.00x135
D. +1.00+1.00x045 - ANSWER A. +1.00-1.00x135
11. What is the total distance power at axis 90 of the following Rx- OU:
-1.00+1.00x045 Add +2.00?
A. Plano
B. -0.50
C. +0.50
D. -1.00 - ANSWER B. -0.50
12. What is the distance Rx spherical equivalent of the following Rx-
OU: -1.00+1.00x045 Add +2.00?
A. Plano
B. +0.50
C. -0.50
D. -1.00 - ANSWER C. -0.50
If a -5.00 lens is decentered 10 mm too far out, what prismatic effect
will be induced?
A. 0.50Δ BO
B. 5.00Δ BO
