Blood vessels in Coloboma!
Casper (quoted by Duke Elder) described three patterns of emergence of blood vessels from the disc.
(i) The most common arrangement was the emergence of blood vessels from the lower part of the colobomatous disc.
The blood vessels meant for the inferior fundus make a sharp bend, kinking over the edge before proceeding inferiorly while vessels superior vessels progress directly across the excavated portion of the colobomatous disc.
(ii) A normal looking arrangement of blood vessels emanating from approximately the centre of the colobomatous disc.
(iii) Blood vessels emanating from the edge of the colobomatous disc resembling cilio-retinal vessels.
Image from Rajan Eye Care Hospital
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