Angioid streaks
 

There are irregular dark red steaks radiating from the optic nerve head. They lid beneath the retina and the blood vessels. The macula may show scarring or pigmentary hyperplasia from subretinal neovascular membrane. Look for associated sign: Optic disc drusen Look for systemic diseases: Pseudoxanthoma elasticum. This is the most common skin condition seen in the MRCOphth examination. There are soft, wrinkled, yellow xanthoma -like skin lesions commonly seen in the neck. Ehler-Danlos's syndrome (poorly healed scars at the knees or heels) Paget's disease Acromegaly

Questions:

1. What are the main causes of poor vision in angioid streaks?

AnswerStreaks involving the macula
Subretinal neovascular membrane leading to haemorrhage and scarring.
Choroidal rupture with an associated subretinal haemorrhage
 

2. What are the systemic features of pseudoxanthoma elasticum?

AnswerHypertension
Dissecting aneurysm
Gastrointestinal bleedings

 

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