ABO Advanced questions and verified
answers
Ophthalmic prescription is the formula to correct what? - CORRECT
ANSWER-To correct refractive anomalies in an individual patient
With prism, do you have to specify the direction? - CORRECT ANSWER-Yes
What does Anisometropia and Antimetropia have in common? - CORRECT
ANSWER-Both may result in the condition where unequal images are sent to the
brain by the eyes.
Aniseikonia - CORRECT ANSWER-The condition that cause two unequal
images being sent to the brain
What lenses do you use to fix Aniseikonia? - CORRECT ANSWER-Iseikonic
Lenses
When a patient comes up with a new RX, what should you check before starting
on the new RX? - CORRECT ANSWER-Check previous RX to compare to new
RX for any concerns or differences
What's the importance of Lifestyle Questioning? - CORRECT ANSWER-It helps
find the exact needs and expectations the patient will have for their glasses
Where is the image formed from Refraction? - CORRECT ANSWER-On the
retina
Do all refractive components have plus or minus dioptric powers? - CORRECT
ANSWER-Plus Dioptric Powers
How many diopters does the cornea perform? - CORRECT ANSWER-43
Diopters
,How many diopters does the crystalline lens perform? - CORRECT ANSWER-17
Diopters
What is the approximate combination of the crystalline lens and the cornea in
diopters? - CORRECT ANSWER-60 Diopters
What is the average axial length of the eye? - CORRECT ANSWER-26.5 mm
Emmetropia - CORRECT ANSWER-The 'normal' ocular refractive condition
Non-Standard Emmetropia - CORRECT ANSWER-Contains excessive plus
power in the cornea and/or crystalline lens BUT may have a shorter axial length
Ametropia - CORRECT ANSWER-Any error of refraction in the eye
Hyperopia (in regards to light) - CORRECT ANSWER-Rays of light strike the
retina BEFORE coming to focus
Where do images come to focus for Hyperopia? - CORRECT ANSWER-BEHIND
the retina
What is Hyperopia also referred to? - CORRECT ANSWER-Farsighted or Long
Sight
Curvature Hyperopia - CORRECT ANSWER-Due to the Cornea or Crystalline
Lens being too flat for the axial length of the eye
Chart Abbreviations:
VA - CORRECT ANSWER-Visual Acuity
Chart Abbreviations:
Cc - CORRECT ANSWER-With Correction
Chart Abbreviations:
Sc - CORRECT ANSWER-Without Correction
Chart Abbreviations:
, N - CORRECT ANSWER-Near
Chart Abbreviations:
D - CORRECT ANSWER-Distance
Chart Abbreviations:
PH - CORRECT ANSWER-Pinhole
Chart Abbreviations:
J - CORRECT ANSWER-Jaeger Notation
Each letter on an acuity chart subtends a _____ angle to the eye at a given
distance. - CORRECT ANSWER-5 Minute Angle
If a patient is NLP or No Light Perception they are? - CORRECT
ANSWER-Totally blind
What is the purpose of Keratometry? - CORRECT ANSWER-To assess the
curvature and toricity of the cornea
If the axis of the flattest meridian is 180 +/- 30 degrees, it is considered
__________? - CORRECT ANSWER-With the Rule
If the axis of the flattest meridian is 90 +/- 30 degrees, it is considered
__________? - CORRECT ANSWER-Against the Rule
If the axis is between 30 & 60 or 120 & 150, it is considered __________? -
CORRECT ANSWER-Oblique
What is the purpose of retinoscopy? - CORRECT ANSWER-Objectively
determine the refractive status of the patients eyes
If the operator is 66cm away from the patient, what would be the compensation in
Diopters? - CORRECT ANSWER-100/66 = +1.50D
Jackson Cross Cylinder (JCC) Test - CORRECT ANSWER-Refine both cylinder
and axis and power.
answers
Ophthalmic prescription is the formula to correct what? - CORRECT
ANSWER-To correct refractive anomalies in an individual patient
With prism, do you have to specify the direction? - CORRECT ANSWER-Yes
What does Anisometropia and Antimetropia have in common? - CORRECT
ANSWER-Both may result in the condition where unequal images are sent to the
brain by the eyes.
Aniseikonia - CORRECT ANSWER-The condition that cause two unequal
images being sent to the brain
What lenses do you use to fix Aniseikonia? - CORRECT ANSWER-Iseikonic
Lenses
When a patient comes up with a new RX, what should you check before starting
on the new RX? - CORRECT ANSWER-Check previous RX to compare to new
RX for any concerns or differences
What's the importance of Lifestyle Questioning? - CORRECT ANSWER-It helps
find the exact needs and expectations the patient will have for their glasses
Where is the image formed from Refraction? - CORRECT ANSWER-On the
retina
Do all refractive components have plus or minus dioptric powers? - CORRECT
ANSWER-Plus Dioptric Powers
How many diopters does the cornea perform? - CORRECT ANSWER-43
Diopters
,How many diopters does the crystalline lens perform? - CORRECT ANSWER-17
Diopters
What is the approximate combination of the crystalline lens and the cornea in
diopters? - CORRECT ANSWER-60 Diopters
What is the average axial length of the eye? - CORRECT ANSWER-26.5 mm
Emmetropia - CORRECT ANSWER-The 'normal' ocular refractive condition
Non-Standard Emmetropia - CORRECT ANSWER-Contains excessive plus
power in the cornea and/or crystalline lens BUT may have a shorter axial length
Ametropia - CORRECT ANSWER-Any error of refraction in the eye
Hyperopia (in regards to light) - CORRECT ANSWER-Rays of light strike the
retina BEFORE coming to focus
Where do images come to focus for Hyperopia? - CORRECT ANSWER-BEHIND
the retina
What is Hyperopia also referred to? - CORRECT ANSWER-Farsighted or Long
Sight
Curvature Hyperopia - CORRECT ANSWER-Due to the Cornea or Crystalline
Lens being too flat for the axial length of the eye
Chart Abbreviations:
VA - CORRECT ANSWER-Visual Acuity
Chart Abbreviations:
Cc - CORRECT ANSWER-With Correction
Chart Abbreviations:
Sc - CORRECT ANSWER-Without Correction
Chart Abbreviations:
, N - CORRECT ANSWER-Near
Chart Abbreviations:
D - CORRECT ANSWER-Distance
Chart Abbreviations:
PH - CORRECT ANSWER-Pinhole
Chart Abbreviations:
J - CORRECT ANSWER-Jaeger Notation
Each letter on an acuity chart subtends a _____ angle to the eye at a given
distance. - CORRECT ANSWER-5 Minute Angle
If a patient is NLP or No Light Perception they are? - CORRECT
ANSWER-Totally blind
What is the purpose of Keratometry? - CORRECT ANSWER-To assess the
curvature and toricity of the cornea
If the axis of the flattest meridian is 180 +/- 30 degrees, it is considered
__________? - CORRECT ANSWER-With the Rule
If the axis of the flattest meridian is 90 +/- 30 degrees, it is considered
__________? - CORRECT ANSWER-Against the Rule
If the axis is between 30 & 60 or 120 & 150, it is considered __________? -
CORRECT ANSWER-Oblique
What is the purpose of retinoscopy? - CORRECT ANSWER-Objectively
determine the refractive status of the patients eyes
If the operator is 66cm away from the patient, what would be the compensation in
Diopters? - CORRECT ANSWER-100/66 = +1.50D
Jackson Cross Cylinder (JCC) Test - CORRECT ANSWER-Refine both cylinder
and axis and power.
