Please note this module is for optometrists only.
The aim of this series is to use high quality video to take the registrant through the process of data capture using an OCT.
First watch the video below, consider the questions raised and then complete the associated multiple choice questions to gain your CET point.
Model answers
Correct answer is in bold italics
Which of the following from the patient history is not relevant to the presenting condition ?
A Patient age
B Nature of vision loss
C Hypercholesterolaemia
D Gender
2 Which of the following descriptions of the ring around the lesion is true?
A It appears brighter than the central lesion within on the infra-red reflectance image
B The multicolour image shows a red ring
C The ring pattern is less easily differentiated on the green reflectance image
D The ring pattern is best differentiated on the blue reflectance pattern
3 Which of the following is not seen on the OCT cross section scan of the lesion?
A The posterior vitreous face detached from the retina
B Elevation of the tissue surrounding the central depression
C Intra-retinal cystic spaces in the elevated tissues around the depression
D Outer nuclear layer cysts with upwardly convex bases
4 Macular pigment in the patient’s left eye is most clearly seen on which of the following reflectance images?
A Infra-red
B Blue
C Green
D Multicolour
5 Which of the following is not seen on the OCT cross section scan of the left macula?
A Subfoveal photoreceptor thickening
B Posterior vitreous partial detachment
C Vitreo-retinal traction
D Normal retinal thickness
6 What is your suggested diagnosis of the cause of the vision loss in the right eye?
A Wet age related macular degeneration
B Lamellar hole
C Rhegmatogenous retinal detachment
D Full thickness macular hole with operculum
Here are some further reference resources that you may find useful when considering the questions:
- Louise Stainer provides a useful review of conditions appropriate to this exercise here.
- Bill Harvey on revising decision making in macular-related presentations here.
- Kirit Patel looks at how OCT use in general optometric practice has helped differentiate a number of maculopathic presentations here
- Nathan Walker and Bishwanath Pal look at macular oedema here.