ABO ADVANCED COMPREHENSIVE STUDY
GUIDE 2026
◉ Which of the following is used to check for lateral and vertical
phorias
Answer: Maddox rod
◉ A patient will experience photo phobia and Poor near vision
after____________
Answer: Cycloplegic refraction
◉ If the patient says that the green side is clearer during the
binocular duochrome test, you should add_______OU.
Answer: Plus power
◉ Which of the following pharmaceuticals will dilate the pupil for 3-
6 hours?
Answer: Cyclopentolate 1%
◉ The physiologic blind spot is located where
Answer: optic disk
,◉ The near point of convergence is reached when the test object:
Answer: Gets so close it blurs
◉ When measuring a patient with a horizontal deviation, the
Maddox rod should be positioned so that the line forms a__________
Answer: Vertical line
◉ The instrument that provides information on the patient
refractive status by reflecting light off the retina is_____________
Answer: Retniscope
◉ If a patient misses two letters on the 20/30 acuity line, the acuity
should be recorded as
Answer: 20/30-2
◉ If the patient sees the red side clearer during a monocular
duochrome test the focal point is
Answer: In front of the retina
◉ Latent hyperboles and children especially need a ______________
Answer: Cycloplegic refraction
, ◉ Which of the following conditions could cause change in
prescription in an adult patient?
Answer: Diabetes
◉ A patient who has a best corrected central acuity of 20/200 is
considered ___________
Answer: legally blind
◉ If the patient has a narrow anterior chamber,_____________
pharmaceuticals should be avoided
Answer: Mydriatic
◉ If a patient is accommodating during a refraction, it may result in
prescription with too much _____________ power
Answer: Minus
◉ The cross cylinder is used to refine:
Answer: Cylinder axis and power
◉ A non-verbal determination of refractive error is called a
___________________________.
Answer: Objective refraction
GUIDE 2026
◉ Which of the following is used to check for lateral and vertical
phorias
Answer: Maddox rod
◉ A patient will experience photo phobia and Poor near vision
after____________
Answer: Cycloplegic refraction
◉ If the patient says that the green side is clearer during the
binocular duochrome test, you should add_______OU.
Answer: Plus power
◉ Which of the following pharmaceuticals will dilate the pupil for 3-
6 hours?
Answer: Cyclopentolate 1%
◉ The physiologic blind spot is located where
Answer: optic disk
,◉ The near point of convergence is reached when the test object:
Answer: Gets so close it blurs
◉ When measuring a patient with a horizontal deviation, the
Maddox rod should be positioned so that the line forms a__________
Answer: Vertical line
◉ The instrument that provides information on the patient
refractive status by reflecting light off the retina is_____________
Answer: Retniscope
◉ If a patient misses two letters on the 20/30 acuity line, the acuity
should be recorded as
Answer: 20/30-2
◉ If the patient sees the red side clearer during a monocular
duochrome test the focal point is
Answer: In front of the retina
◉ Latent hyperboles and children especially need a ______________
Answer: Cycloplegic refraction
, ◉ Which of the following conditions could cause change in
prescription in an adult patient?
Answer: Diabetes
◉ A patient who has a best corrected central acuity of 20/200 is
considered ___________
Answer: legally blind
◉ If the patient has a narrow anterior chamber,_____________
pharmaceuticals should be avoided
Answer: Mydriatic
◉ If a patient is accommodating during a refraction, it may result in
prescription with too much _____________ power
Answer: Minus
◉ The cross cylinder is used to refine:
Answer: Cylinder axis and power
◉ A non-verbal determination of refractive error is called a
___________________________.
Answer: Objective refraction
