Pattern of blood vessels in eyes with coloboma.
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Date
2013-12
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Abstract
Background: Choroidal coloboma, especially with optic disc involvement affects the blood vessel (BV) pattern
in the fundus. Aim: The aim of this study was to report the observations on the pattern of retinal BVs in eyes
with fundus coloboma. Design: Retrospective observational study. Materials and Methods: Twenty four
eyes of 19 patients with fundus coloboma and the disc involvement in the coloboma was classified according
to a previous publication. Results: Four varieties of BVs were identified in the area of coloboma – BVs
that were continuous with those arising from the optic disc; vessels emanating from the floor of coloboma
whose continuity with central retinal artery or its branches could be indirectly established; and those
emanating from the floor of coloboma whose continuity with central retinal artery could not be established.
In addition, extraocular BVs were visible through the thinned sclera. The retinal BVs often traversed the
coloboma to reach the normal retina. The disc itself was found to be small and had no physiological cup
(if not colobomatous). Conclusions: One should be aware of the major BVs transgressing the coloboma
while performing relaxing cuts in the intercalary membrane, during the surgery for retinal detachments in
eyes with coloboma. Physiological cup is usually absent (when the disc is not colobomatous). Hence, any
cupping in such eyes should be viewed with suspicion.
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Keywords
Coloboma of the choroid, coloboma optic disc, indo cyanine green angiography, vascular pattern
Citation
Lingam Gopal. Pattern of blood vessels in eyes with coloboma. Indian Journal of Ophthalmology. 2013 Dec ; 61 (12): 743-748.