ABO Practice Exam | Questions with 100% Verified Answers |
Latest Update 2026/2027
Question: What is the best frame adjustment when the left lens sits closer to the patients face than the right
lens?
Answer: Angle left temple in
Question: The segment location tolerance in the vertical (segment height) meridian in a mounted pair of
eyeglasses is:
Answer: Pairs Should Match Within 1.0mm Of Specification
Question: Person that requires no prescription to see at distance is considered ?
Answer: Emmetropic
Question: A spectrometer measures the:
Answer: Light Transmission
Question: The optical center of a lens is:
Answer: A lens location of zero deviation of the optical axis
Question: Where will the optical center appear in a lensometer when neutralizing a right lens for base in prism?
Answer: To The Right Of The Target Center
Question: The vertical difference in power between lenses in the following Rx is OD: +1.00 +0.50 X045 OS:
+1.00 +0.50 X090
Answer: 0.25D sph
Question: Astigmatism is corrected by a lens having:
Answer: cylindrical powers
Question: Given the following prescription, what is the tolerance for the cylinder power? RX: -11 00 -2.50 X180
Answer: +/- 0.125D
Question: The cylinder axis tolerance for a 1.25D cylinder is:
Answer: 3 degrees
Question: Reflections are reduced on a lens surface by using
Answer: anti -glare coatings
Question: Which of the following indicates the best distant vision:
Answer: 20/15 3 multiple choice options
Question: Which wavelengths of light: have been indicated as possible contributor to the onset of cataracts?
Answer: 350nm--400nm 3 multiple choice options
, Question: If the pupillary distance is measured while the patient is focusing on a point 16 inches in front of
eyes. The Pd measured is known as the
Answer: Near PD
Question: The type of bridge on a metal frame rests entirely on the nose
Answer: Unifit
Question: Iseikonic lenses are used for the correction of:
Answer: Aniseikonia
Question: Given an Rx of Plano +1.00 X090, corrects which of the following refractive conditions:
Answer: simple hyperopic astigmatism
Question: Match the following patient type with the indicated temple style: small children
Answer: Comfort Cable Or Riding Bow
Question: Widening the distance between the nose pads results in the frame sitting
Answer: Lower
Question: Where do ocular images cross?
Answer: Optical chiasm
Question: What is the function of the optic chiasm?
Answer: It helps your brain process visual information and create one image from both eyes.
Question: The optical cross is a graphic representation of a lens that shows
Answer: the meridian powers
Question: If your lensometer reads -0.25 with no lens, a lens that measures -3.00 - 1.50 X180 is actually:
Answer: -2.75-1.50 x 180
Question: The spherical equivalent of the lens +2.00+2.50 X 090 is
Answer: +3.25
Question: Children with convergence issues are usually prescribed
Answer: base in prism
Question: Which of the following would be best to do for a patient whose eye lashes are touching the back
surfaces of the lenses?
Answer: steepen the base curve
Question: A plus 0.5 diopter lens decentered 2.0mm creates
Answer: 0.10Δ
Question: Bicentric Grinding Is commonly associated with
Answer: vertical imbalance
Latest Update 2026/2027
Question: What is the best frame adjustment when the left lens sits closer to the patients face than the right
lens?
Answer: Angle left temple in
Question: The segment location tolerance in the vertical (segment height) meridian in a mounted pair of
eyeglasses is:
Answer: Pairs Should Match Within 1.0mm Of Specification
Question: Person that requires no prescription to see at distance is considered ?
Answer: Emmetropic
Question: A spectrometer measures the:
Answer: Light Transmission
Question: The optical center of a lens is:
Answer: A lens location of zero deviation of the optical axis
Question: Where will the optical center appear in a lensometer when neutralizing a right lens for base in prism?
Answer: To The Right Of The Target Center
Question: The vertical difference in power between lenses in the following Rx is OD: +1.00 +0.50 X045 OS:
+1.00 +0.50 X090
Answer: 0.25D sph
Question: Astigmatism is corrected by a lens having:
Answer: cylindrical powers
Question: Given the following prescription, what is the tolerance for the cylinder power? RX: -11 00 -2.50 X180
Answer: +/- 0.125D
Question: The cylinder axis tolerance for a 1.25D cylinder is:
Answer: 3 degrees
Question: Reflections are reduced on a lens surface by using
Answer: anti -glare coatings
Question: Which of the following indicates the best distant vision:
Answer: 20/15 3 multiple choice options
Question: Which wavelengths of light: have been indicated as possible contributor to the onset of cataracts?
Answer: 350nm--400nm 3 multiple choice options
, Question: If the pupillary distance is measured while the patient is focusing on a point 16 inches in front of
eyes. The Pd measured is known as the
Answer: Near PD
Question: The type of bridge on a metal frame rests entirely on the nose
Answer: Unifit
Question: Iseikonic lenses are used for the correction of:
Answer: Aniseikonia
Question: Given an Rx of Plano +1.00 X090, corrects which of the following refractive conditions:
Answer: simple hyperopic astigmatism
Question: Match the following patient type with the indicated temple style: small children
Answer: Comfort Cable Or Riding Bow
Question: Widening the distance between the nose pads results in the frame sitting
Answer: Lower
Question: Where do ocular images cross?
Answer: Optical chiasm
Question: What is the function of the optic chiasm?
Answer: It helps your brain process visual information and create one image from both eyes.
Question: The optical cross is a graphic representation of a lens that shows
Answer: the meridian powers
Question: If your lensometer reads -0.25 with no lens, a lens that measures -3.00 - 1.50 X180 is actually:
Answer: -2.75-1.50 x 180
Question: The spherical equivalent of the lens +2.00+2.50 X 090 is
Answer: +3.25
Question: Children with convergence issues are usually prescribed
Answer: base in prism
Question: Which of the following would be best to do for a patient whose eye lashes are touching the back
surfaces of the lenses?
Answer: steepen the base curve
Question: A plus 0.5 diopter lens decentered 2.0mm creates
Answer: 0.10Δ
Question: Bicentric Grinding Is commonly associated with
Answer: vertical imbalance
