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Retinal abnormalities in CADASIL: a retrospective study of 18 patients
R Cumurciuc1, P Massin, M Pâques
1Department of Neurology, Lariboisiere Hospital, 2, rue A Paré, 75010 Paris, France.
Background:
CADASIL is an inherited small vessel disease related to Notch3 gene mutations.
Aim:
To report retinal findings in symptomatic CADASIL patients.
Methods:
Assessment of visual acuity (VA), testing of visual fields (VF), funduscopic examination (FE), and fluorescein angiography (FA) were carried out in 18 symptomatic patients.
Results:
No visual symptoms were presented by our patients. VA was normal in all. Ophthalmologic abnormalities were found in 8 patients. VF were normal except for a right hemianopia in one subject due to ischemic stroke. FE and FA revealed significant abnormalities in seven other subjects (mean age: 55 years; range: 39-74): nerve fibre loss (n = 4), cotton wool spots (n = 3), sheathed arteries (n = 1), and tortuous arteries (n = 1). Only one patient with both tortuous arteries and nerve fibre loss had multiple vascular risk factors, and another patient with cotton wool spots was a current smoker.
Discussion:
FE and FA revealed silent retinal abnormalities in CADASIL patients with nerve fibre loss in 22% and cotton wool spots in 17%. The presence of these abnormal retinal findings does not seem related to the severity of the disorder but may be considered as peripheral markers of this genetic disease.