Related Experiment Videos
Leber's optic neuropathy I. Clinical studies
Documenta Ophthalmologica. Advances in Ophthalmology
|September 30, 1982
Summary
Early signs of Leber's Optic Neuropathy (L.O.N.) are detectable in at-risk individuals. Capillary tortuosity may be a key indicator for predicting L.O.N. development.
Area of Science:
- Ophthalmology
- Neuro-ophthalmology
- Genetics
Background:
- Leber's Hereditary Optic Neuropathy (L.O.N.) is a maternally inherited mitochondrial disease.
- Early detection of L.O.N. is crucial for potential interventions and management.
- Identifying individuals at risk allows for proactive monitoring and research.
Observation:
- A study examined 72 individuals at risk for developing L.O.N.
- Ophthalmological examinations included fluorescein angiography, visual evoked responses (VERs), and color vision testing (Farnsworth 100-Hue).
- Specific attention was given to peripapillary capillaries, optic disc appearance, and visual field defects.
Findings:
- Early, often non-specific signs were identified in at-risk individuals.
- These included peripapillary capillary tortuosity, optic disc hyperemia, hazy disc margins, paracentral/central visual field defects (scotomata), abnormal VERs, and impaired color vision.
- Peripapillary capillary tortuosity emerged as a potentially specific early sign, observed in one individual who later developed L.O.N. within six months.
Implications:
- The findings suggest that early ophthalmological signs precede the acute phase of L.O.N.
- Monitoring these early indicators, particularly capillary tortuosity, could aid in predicting disease onset.
- Abnormalities resembling those in at-risk individuals were also noted in some carriers, warranting further investigation into carrier status and disease penetrance.