Abstract | PURPOSE: DESIGN: Cross-sectional study. PARTICIPANTS AND/OR CONTROLS: Thirty-eight patients with LHON were analyzed and compared with an age-matched control group of 75 patients. Patients with LHON were classified as having early LHON (E-LHON, n = 8) when the duration of the disease was shorter than 6 months and atrophic LHON (A-LHON, n = 30) when the duration was longer than 6 months. METHODS: The fast RNFL thickness (3.4) scan acquisition protocol was used. MAIN OUTCOME MEASURE:
Retinal nerve fiber layer thickness as measured by StratusOCT. RESULTS: Compared with the control group, eyes with E-LHON showed a thicker RNFL in the 360 degrees average measurement (P<0.01) and in the superior (P<0.01), nasal (P<0.05), and inferior quadrants (P<0.05); no significant changes were detected in the temporal quadrant. Eyes with A-LHON revealed a thinner RNFL in all measurements (P<0.001); the fibers of the nasal quadrant showed the lowest amount of reduction (38% vs. 42%-49.8% in the other quadrants). In cases with A-LHON and visual recovery, RNFL was significantly thicker in all measurements (P<0.001), except the temporal quadrant, with respect to A-LHON without visual recovery. CONCLUSIONS: On the basis of OCT data, the RNFL is thickened in E-LHON and severely thinned in A-LHON. RNFL is likely to be partially preserved in A-LHON with visual recovery. The temporal fibers (papillomacular bundle) are the first and most severely affected; the nasal fibers seem to be partially spared in the late stage of the disease.
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Authors | Piero Barboni, Giacomo Savini, Maria Lucia Valentino, Pasquale Montagna, Pietro Cortelli, Anna Maria De Negri, Federico Sadun, Stefania Bianchi, Lora Longanesi, Maurizio Zanini, Antonello de Vivo, Valerio Carelli |
Journal | Ophthalmology
(Ophthalmology)
Vol. 112
Issue 1
Pg. 120-6
(Jan 2005)
ISSN: 1549-4713 [Electronic] United States |
PMID | 15629831
(Publication Type: Journal Article)
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Topics |
- Acute Disease
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Child
- Cross-Sectional Studies
- Diagnostic Techniques, Ophthalmological
- Female
- Humans
- Male
- Middle Aged
- Nerve Fibers
(pathology)
- Optic Atrophy, Hereditary, Leber
(diagnosis, genetics)
- Retinal Ganglion Cells
(pathology)
- Tomography, Optical Coherence
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