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Discrete arcs of increased fundus autofluorescence in retinal dystrophies and functional correlate on microperimetry.
- Source :
-
Eye (London, England) [Eye (Lond)] 2009 Mar; Vol. 23 (3), pp. 567-75. Date of Electronic Publication: 2008 Mar 14. - Publication Year :
- 2009
-
Abstract
- Purpose: To describe the occurrence of discrete arcs of increased fundus autofluorescence (FAF) associated with various retinal dystrophies and to assess their functional significance by fundus-controlled microperimetry.<br />Methods: Seven patients, three with pigmented paravenous retinochoroidal atrophy (PPRCA), one with sector retinitis pigmentosa (RP), one with typical RP, and two with macular dystrophy were assessed by retinal imaging including FAF imaging. Serial images were obtained within a review period of 6 and 10 years in a patient with PPRCA and macular dystrophy, respectively. Fundus-controlled microperimetry was performed in eight eyes of five patients to determine light increment sensitivity.<br />Results: A discrete arched line of increased FAF was observed without obvious correlate on fundus biomicroscopy. The orientation of this line differed from ring shape in RP and macular dystrophy, a semi-circle structure in sector RP to crescent shape with tiplike extensions towards branching retinal veins in PPRCA. Longitudinal investigation revealed slight migration of the arc in PPRCA and peripheral extension of the ring diameter in macular dystrophy. Microperimetry revealed that the arc of increased FAF sharply delineated areas of severely impaired retinal sensitivity.<br />Conclusions: The findings indicate that arcs of increased FAF in PPRCA and other retinal dystrophies demarcate areas of impaired retinal function and may migrate over time. FAF imaging may therefore reveal the exact extent of neurosensory dysfunction that may exceed the dimensions anticipated by conventional examinations.
- Subjects :
- Adolescent
Adult
Atrophy diagnosis
Atrophy physiopathology
Child
Choroid pathology
Electroretinography
Female
Fluorescence
Fundus Oculi
Humans
Macular Degeneration diagnosis
Macular Degeneration physiopathology
Male
Ophthalmoscopy methods
Retinal Degeneration physiopathology
Retinitis Pigmentosa diagnosis
Retinitis Pigmentosa physiopathology
Visual Acuity physiology
Visual Field Tests methods
Young Adult
Retinal Degeneration diagnosis
Subjects
Details
- Language :
- English
- ISSN :
- 1476-5454
- Volume :
- 23
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Eye (London, England)
- Publication Type :
- Academic Journal
- Accession number :
- 18344954
- Full Text :
- https://doi.org/10.1038/eye.2008.59