Keratoconus associated with CSNB1 | Zendy

Duong T. Nguyen | Zendy; Christopher Hemmerdinger | Zendy; Richard Hagan | Zendy; Malcolm C. Brown | Zendy; S. A. Quah | Zendy; Stephen B. Kaye | Zendy

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Keratoconus associated with CSNB1

Author(s) -

Duong T. Nguyen,

Christopher Hemmerdinger,

Richard Hagan,

Malcolm C. Brown,

S. A. Quah,

Stephen B. Kaye

Publication year - 2009

Publication title -

bmj case reports

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.231

H-Index - 26

ISSN - 1757-790X

DOI - 10.1136/bcr.09.2008.0877

Subject(s) - keratoconus , medicine , ophthalmology , astigmatism , corneal topography , ectasia , cornea , erg , optometry , surgery , retinal , optics , physics

A 35-year-old man with best corrected visual acuities of -18.00/+10.00×180 (6/60) OD and -10.00/+8.00×5 (6/36) OS. Bilateral steep central corneal thinning, paracentral ectasia and Vogts striae were present; normal fundi. Corneal topography disclosed 7.4 dioptres of irregular astigmatism in the central 3 mm with thinning (335 μm). Electroretinography (ERG) showed no response. There were no medical or environmental influences for his keratoconus. Occurrence of keratoconus and CSNB in the patient may represent a chance association, but keratoconus has not been previously linked with CSNB1 either as a chance or true association though both show genetic predisposition.

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