Quiz: Using OCT

1. When a traffic light scale is used, red is normally used to indicate which ONE of the following?

a) Always require referral

b) Indicate red disease is present

c) Indicate that the finding is outside the range of the normal range of the database

d) Can generally be ignored as artefacts

2. What does CV and VDD stand for?

a) Cup volume and vertical disc diameter

b) Cup vertically and vertical disc diameter

c) Cup volume and volume depth and diameter

d) Cup vasculature and vertical disc diameter

3. OCT scans can reveal:

a) an epiretinal membrane

b) narrow anterior chamber angles

c) optic nerve head drusen

d) all of the above

4. Which of the following statements is true?

a) The 5 line macular scan is of lower quality than the 3D macular scan

b) Thinning of the retina above and below the midline around the macular can be an early sign of glaucoma

c) Drusen cause raised bumps on a 3D retinal thickness contour map

d) The RPE is depicted by the thicker dark line on the 3D macular scan image

5. The edge of the optic disc is defined by:

a) The position of the lamina cribrosa

b) The opening in Bruch’s membrane

c) The outer edge of the neuroretinal rim

d) The inner edge of peripapillary atrophy

6. Which ONE of the following affects the quality of the scan?

a) Intra ocular lens implant

b) Tear film stability

c) Hypermetropia

d) Presbyopia

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