ABO ADVANCED PRACTICE QUESTIONS WITH
DETAILED EXPLANATIONS 2026
◉ With prism, do you have to specify the direction?
Answer: Yes
◉ What does Anisometropia and Antimetropia have in common?
Answer: Both may result in the condition where unequal images are
sent to the brain by the eyes.
◉ Aniseikonia
Answer: The condition that cause two unequal images being sent to
the brain
◉ What lenses do you use to fix Aniseikonia?
Answer: Iseikonic Lenses
◉ When a patient comes up with a new RX, what should you check
before starting on the new RX?
Answer: Check previous RX to compare to new RX for any concerns
or differences
,◉ What's the importance of Lifestyle Questioning?
Answer: It helps find the exact needs and expectations the patient
will have for their glasses
◉ Where is the image formed from Refraction?
Answer: On the retina
◉ Do all refractive components have plus or minus dioptric powers?
Answer: Plus Dioptric Powers
◉ How many diopters does the cornea perform?
Answer: 43 Diopters
◉ How many diopters does the crystalline lens perform?
Answer: 17 Diopters
◉ What is the approximate combination of the crystalline lens and
the cornea in diopters?
Answer: 60 Diopters
◉ What is the average axial length of the eye?
Answer: 26.5 mm
,◉ Emmetropia
Answer: The 'normal' ocular refractive condition
◉ Non-Standard Emmetropia
Answer: Contains excessive plus power in the cornea and/or
crystalline lens BUT may have a shorter axial length
◉ Ametropia
Answer: Any error of refraction in the eye
◉ Hyperopia (in regards to light)
Answer: Rays of light strike the retina BEFORE coming to focus
◉ Where do images come to focus for Hyperopia?
Answer: BEHIND the retina
◉ What is Hyperopia also referred to?
Answer: Farsighted or Long Sight
◉ Curvature Hyperopia
, Answer: Due to the Cornea or Crystalline Lens being too flat for the
axial length of the eye
◉ Chart Abbreviations:
VA
Answer: Visual Acuity
◉ Chart Abbreviations:
Cc
Answer: With Correction
◉ Chart Abbreviations:
Sc
Answer: Without Correction
◉ Chart Abbreviations:
N
Answer: Near
◉ Chart Abbreviations:
D
Answer: Distance
DETAILED EXPLANATIONS 2026
◉ With prism, do you have to specify the direction?
Answer: Yes
◉ What does Anisometropia and Antimetropia have in common?
Answer: Both may result in the condition where unequal images are
sent to the brain by the eyes.
◉ Aniseikonia
Answer: The condition that cause two unequal images being sent to
the brain
◉ What lenses do you use to fix Aniseikonia?
Answer: Iseikonic Lenses
◉ When a patient comes up with a new RX, what should you check
before starting on the new RX?
Answer: Check previous RX to compare to new RX for any concerns
or differences
,◉ What's the importance of Lifestyle Questioning?
Answer: It helps find the exact needs and expectations the patient
will have for their glasses
◉ Where is the image formed from Refraction?
Answer: On the retina
◉ Do all refractive components have plus or minus dioptric powers?
Answer: Plus Dioptric Powers
◉ How many diopters does the cornea perform?
Answer: 43 Diopters
◉ How many diopters does the crystalline lens perform?
Answer: 17 Diopters
◉ What is the approximate combination of the crystalline lens and
the cornea in diopters?
Answer: 60 Diopters
◉ What is the average axial length of the eye?
Answer: 26.5 mm
,◉ Emmetropia
Answer: The 'normal' ocular refractive condition
◉ Non-Standard Emmetropia
Answer: Contains excessive plus power in the cornea and/or
crystalline lens BUT may have a shorter axial length
◉ Ametropia
Answer: Any error of refraction in the eye
◉ Hyperopia (in regards to light)
Answer: Rays of light strike the retina BEFORE coming to focus
◉ Where do images come to focus for Hyperopia?
Answer: BEHIND the retina
◉ What is Hyperopia also referred to?
Answer: Farsighted or Long Sight
◉ Curvature Hyperopia
, Answer: Due to the Cornea or Crystalline Lens being too flat for the
axial length of the eye
◉ Chart Abbreviations:
VA
Answer: Visual Acuity
◉ Chart Abbreviations:
Cc
Answer: With Correction
◉ Chart Abbreviations:
Sc
Answer: Without Correction
◉ Chart Abbreviations:
N
Answer: Near
◉ Chart Abbreviations:
D
Answer: Distance
