OCANZ COMPREHENSIVE EXAM 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ What is Stargardt disease. Answer: is the most common form of
inherited juvenile macular degeneration.
◉ Wife calls requesting details on husbands eye test. Do you: get verbal
consent, refuse call, get written consent. Answer: get written consent
◉ Diabetic recently diagnosed unstable. Refraction reveals significant
myopic shift compared to last visit 12 months ago. Which is the most
appropriate course of action:
a/ prescribe specs & report to GP
b/ Refer to Ophthalmologist,
c/ Discuss findings with GP before prescribing Rx,
d/ Obtain info on current blood glucose levels. Answer: c/ Discuss
findings with GP before prescribing Rx,
◉ The main cause of amblyopia in a child: anisometropia >2,
accommodative eso, intermittent exo. Answer: anisometropia >2,
◉ Which of the following can match Illuminant c: Incandescent,
Halogen, Flourescent, sodium. Answer: Fluorescent
,◉ 25 years old enquiring her suitability for laser refractive surgery.
Which of the following is NOT essential pre-operatively:
a/ Tonometry,
b/ Tear film stability
c/ pupil size,
d/ Gonio. Answer: d/ Gonio
◉ What is Kolleners rule in relation to colour vision?. Answer: outer
retinal diseases and media changes result in blue-yellow color defects
inner retina, optic nerve, visual pathway, and visual cortex will result in
red-green defects.
(increased susceptibility of S-cones and rods to ischaemia and oxidative
damage, although S-cone loss is more noticeable due to their lower
density and their higher metabolic rate) (Kollners rule, retinal disease
will give a blue yellow defect and optic nerve disease will give a red
green defect but the exceptions are glaucoma which will give a blue
yellow defect and central cone degeneration which will give a red green
defect)
◉ Which causes a red defect- red cap test: optic neuritis, Amd. Answer:
Optic neuritis
, ◉ Lissamine green; what does it stain?. Answer: Lissamine green stains
dead and degenerate cells, yet does not stain healthy epithelial cells.
(NaFl permeates into the intercellular space associated with any
epithelial cellular disruption)
◉ Is gonio indicated with Hyphaema?. Answer: no
◉ What is prenticies rule?. Answer: P (prism dioptres =c (decentration
in cm) x F(power of lens in dioptres)
◉ What is the most preventable cause of AMD?. Answer: Smoking
◉ 15 years old attends eye examination, best Va's R6/6, L 6/24 (told
ambloypic). Which occuptation should he NOT pursue:
a/ Train driver,
B/ construction worker,
c/ Electrician,
d/ Dentist. Answer: a/ Train driver
◉ RGP fit with lens riding high and bubbles underneath. What is the
bubbles underneath- name? What is the cause? How would you change
the fit? Rewrite the prescription, base curve/power/diameter according to
QUESTIONS WITH SOLUTIONS GRADED A+
◉ What is Stargardt disease. Answer: is the most common form of
inherited juvenile macular degeneration.
◉ Wife calls requesting details on husbands eye test. Do you: get verbal
consent, refuse call, get written consent. Answer: get written consent
◉ Diabetic recently diagnosed unstable. Refraction reveals significant
myopic shift compared to last visit 12 months ago. Which is the most
appropriate course of action:
a/ prescribe specs & report to GP
b/ Refer to Ophthalmologist,
c/ Discuss findings with GP before prescribing Rx,
d/ Obtain info on current blood glucose levels. Answer: c/ Discuss
findings with GP before prescribing Rx,
◉ The main cause of amblyopia in a child: anisometropia >2,
accommodative eso, intermittent exo. Answer: anisometropia >2,
◉ Which of the following can match Illuminant c: Incandescent,
Halogen, Flourescent, sodium. Answer: Fluorescent
,◉ 25 years old enquiring her suitability for laser refractive surgery.
Which of the following is NOT essential pre-operatively:
a/ Tonometry,
b/ Tear film stability
c/ pupil size,
d/ Gonio. Answer: d/ Gonio
◉ What is Kolleners rule in relation to colour vision?. Answer: outer
retinal diseases and media changes result in blue-yellow color defects
inner retina, optic nerve, visual pathway, and visual cortex will result in
red-green defects.
(increased susceptibility of S-cones and rods to ischaemia and oxidative
damage, although S-cone loss is more noticeable due to their lower
density and their higher metabolic rate) (Kollners rule, retinal disease
will give a blue yellow defect and optic nerve disease will give a red
green defect but the exceptions are glaucoma which will give a blue
yellow defect and central cone degeneration which will give a red green
defect)
◉ Which causes a red defect- red cap test: optic neuritis, Amd. Answer:
Optic neuritis
, ◉ Lissamine green; what does it stain?. Answer: Lissamine green stains
dead and degenerate cells, yet does not stain healthy epithelial cells.
(NaFl permeates into the intercellular space associated with any
epithelial cellular disruption)
◉ Is gonio indicated with Hyphaema?. Answer: no
◉ What is prenticies rule?. Answer: P (prism dioptres =c (decentration
in cm) x F(power of lens in dioptres)
◉ What is the most preventable cause of AMD?. Answer: Smoking
◉ 15 years old attends eye examination, best Va's R6/6, L 6/24 (told
ambloypic). Which occuptation should he NOT pursue:
a/ Train driver,
B/ construction worker,
c/ Electrician,
d/ Dentist. Answer: a/ Train driver
◉ RGP fit with lens riding high and bubbles underneath. What is the
bubbles underneath- name? What is the cause? How would you change
the fit? Rewrite the prescription, base curve/power/diameter according to
