2025 ABO ADVANCE ACTUAL EXAM QUESTIONS WITH
ANSWERS 2025/2026 GRADED A +
When were the first most functional telescopes introduced and by whom?
A. 1608-Galileo
B. 1607- Lippershey
C. 1668- newton
D. 1672- cassegrain - B. 1607- Lippershey
When was the first practical reflector design telescope introduced and by whom?
A. 1608-Galileo
B. 1608- lippershey
C. 1668-Galileo
D. 1672- cassegrain - C. 1668 by Galileo
Which aberrations are of the greatest concern to a spectacle wearer?
A. Chromatic aberration
B. Marginal astigmatism
C. Spherical aberration
D. Curvature of field - B. Marginal astigmatism
The lens aberration that produces a shorter focal length for rays near the edge of the
lens than rays near the optical axis is called what?
A. Chromatic aberration
B. Marginal astigmatism
C. Spherical aberration
D. Curvature of field - C. Spherical aberration
Designers of corrected curve lenses give much consideration to this aberration.
A. Chromatic aberration
B. Marginal astigmatism
C. Spherical aberration
D. Curvature of field - B. Marginal astigmatism
The aberration affecting image shape when wearing high plus lenses is called?
A. Chromatic aberration
B. Marginal astigmatism
C. Pincushion distortion
D. Barrel distortion - Pincushion
The aberration affecting image shape when wearing high minus lenses is called?
A. Chromatic aberration
B. Marginal astigmatism
C. Pincushion distortion
D. Barrel distortion - D. Barrel distortion
,The aberrations which are "narrow beam" aberrations include?
A chromatic aberration and marginal astigmatism
B. Marginal astigmatism and curvature of field
C. Pincushion distortion and barrel distortion
D. Spherical aberration and coma - B. Marginal astigmatism a d curvature of field
What lens design could potentially eliminate most lower order aberrations in lenses?
A. Corrective-curve lenses
B. Best-form lenses
C. Digitally-surfaced lenses
D. Aspherically designed lenses - C. Digital surfaced lenses
Up to what percentage of the eyes vision is accountable to higher order aberrations
A. 20%
B. 30%
C. 45%
D. 65% - A. 20%
Standard Refraction cannot detect what?
A. Color deficiency
B. Lower order aberrations
C. Higher order aberrations
D. Muscle defects - C. High order aberrations
Higher order aberrations are ranked using what?
A. Abbe values
B. Zernike polynomials
C. Triple images
D. Defocus - B. Zernike polynomials
Eso - Turning inward
Exo - Turning out
Hyper - Above up
Hypo - Below down
Phoria - Tendency to turn
Tropia - A definite turning of the eye
The optical center of a round segment is located:
A. At the very top of the segment
B. In the geometric center of the segment
C. 5mm from the top of the segment
, D. At the very bottom of the segment - B.
Which wavelengths of light have been indicated as possible contributors to the onset of
cataracts?
A. 400-520
B. 520-635
C. 350-400
D. 635-750 - C. 350-400nm
A concave mirror:
A. Can focus parallel incident rays to form a real image
B. Can focus parallel incident rays to form a virtual image
C. Always produces inverted images of real objects
D. Produces virtual images smaller than the real object - A Can focus parallel incident
rays to form a real image
White light is broken into its component colors when it is:
A. Diffracted
B. Refracted
C. Reflected
D. Diffracted or refracted - D. Diffracted or refracted
The velocity of light is the least in:
A. Air
B. Polycarbonate
C. Water
D. Flint glass - d. flint glass
The color in white light that is refracted the most after passing through a refracting test
medium is:
A. Red
B. Yellow
C.blue
D. Violet - violet
The reflection of light from a surface is most influenced by:
A. The index of refraction
B. The surface coating
C. The regularity of the surface
D. Ar coating - The regularity of the surface
Light rays originating at a distant point source are described as being:
A. Divergent
B. Convergent
C. Parallel
D. Refracted - parallel
ANSWERS 2025/2026 GRADED A +
When were the first most functional telescopes introduced and by whom?
A. 1608-Galileo
B. 1607- Lippershey
C. 1668- newton
D. 1672- cassegrain - B. 1607- Lippershey
When was the first practical reflector design telescope introduced and by whom?
A. 1608-Galileo
B. 1608- lippershey
C. 1668-Galileo
D. 1672- cassegrain - C. 1668 by Galileo
Which aberrations are of the greatest concern to a spectacle wearer?
A. Chromatic aberration
B. Marginal astigmatism
C. Spherical aberration
D. Curvature of field - B. Marginal astigmatism
The lens aberration that produces a shorter focal length for rays near the edge of the
lens than rays near the optical axis is called what?
A. Chromatic aberration
B. Marginal astigmatism
C. Spherical aberration
D. Curvature of field - C. Spherical aberration
Designers of corrected curve lenses give much consideration to this aberration.
A. Chromatic aberration
B. Marginal astigmatism
C. Spherical aberration
D. Curvature of field - B. Marginal astigmatism
The aberration affecting image shape when wearing high plus lenses is called?
A. Chromatic aberration
B. Marginal astigmatism
C. Pincushion distortion
D. Barrel distortion - Pincushion
The aberration affecting image shape when wearing high minus lenses is called?
A. Chromatic aberration
B. Marginal astigmatism
C. Pincushion distortion
D. Barrel distortion - D. Barrel distortion
,The aberrations which are "narrow beam" aberrations include?
A chromatic aberration and marginal astigmatism
B. Marginal astigmatism and curvature of field
C. Pincushion distortion and barrel distortion
D. Spherical aberration and coma - B. Marginal astigmatism a d curvature of field
What lens design could potentially eliminate most lower order aberrations in lenses?
A. Corrective-curve lenses
B. Best-form lenses
C. Digitally-surfaced lenses
D. Aspherically designed lenses - C. Digital surfaced lenses
Up to what percentage of the eyes vision is accountable to higher order aberrations
A. 20%
B. 30%
C. 45%
D. 65% - A. 20%
Standard Refraction cannot detect what?
A. Color deficiency
B. Lower order aberrations
C. Higher order aberrations
D. Muscle defects - C. High order aberrations
Higher order aberrations are ranked using what?
A. Abbe values
B. Zernike polynomials
C. Triple images
D. Defocus - B. Zernike polynomials
Eso - Turning inward
Exo - Turning out
Hyper - Above up
Hypo - Below down
Phoria - Tendency to turn
Tropia - A definite turning of the eye
The optical center of a round segment is located:
A. At the very top of the segment
B. In the geometric center of the segment
C. 5mm from the top of the segment
, D. At the very bottom of the segment - B.
Which wavelengths of light have been indicated as possible contributors to the onset of
cataracts?
A. 400-520
B. 520-635
C. 350-400
D. 635-750 - C. 350-400nm
A concave mirror:
A. Can focus parallel incident rays to form a real image
B. Can focus parallel incident rays to form a virtual image
C. Always produces inverted images of real objects
D. Produces virtual images smaller than the real object - A Can focus parallel incident
rays to form a real image
White light is broken into its component colors when it is:
A. Diffracted
B. Refracted
C. Reflected
D. Diffracted or refracted - D. Diffracted or refracted
The velocity of light is the least in:
A. Air
B. Polycarbonate
C. Water
D. Flint glass - d. flint glass
The color in white light that is refracted the most after passing through a refracting test
medium is:
A. Red
B. Yellow
C.blue
D. Violet - violet
The reflection of light from a surface is most influenced by:
A. The index of refraction
B. The surface coating
C. The regularity of the surface
D. Ar coating - The regularity of the surface
Light rays originating at a distant point source are described as being:
A. Divergent
B. Convergent
C. Parallel
D. Refracted - parallel
