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[Retinal nerve fiber layer photography in retinal vein occlusion]
K U Bartz-Schmidt1, P Schmitz-Valckenberg
1Augenabteilung, Krankenhaus Ev. Stift St. Martin, Koblenz, Bundesrepublik Deutschland.
Fortschritte Der Ophthalmologie : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|January 1, 1991
Summary
Retinal nerve fiber layer photography effectively differentiates ischemic from non-ischemic retinal branch vein occlusion. This method aids in diagnosing, prognosing, and managing optic nerve damage.
Area of Science:
- Ophthalmology
- Medical Imaging
- Retinal Vascular Diseases
Background:
- Retinal branch vein occlusion (RBVO) presents diagnostic challenges in differentiating ischemic from non-ischemic types.
- Accurate differentiation is crucial for effective patient management and prognosis.
Observation:
- Perimetry revealed significant visual field defects (>10 dB) in eyes with retinal nerve fiber layer (RNFL) defects.
- Fluorescein angiography confirmed ischemic areas correlating with RNFL defects.
- RNFL damage was detectable prior to capillary obliteration seen on angiography.
Findings:
- Photography of the RNFL provides qualitative detection of localized RNFL defects, differentiating ischemic from non-ischemic RBVO.
- No correlation was found between the extent of ischemic area and the sector angle of RNFL defects.
- Optic disc morphometry using pallor and excavation differences was not consistently reliable for ascending optic atrophy.
Implications:
- RNFL photography is a valuable clinical tool for diagnosing various optic lesions.
- This technique improves the prognosis and management strategies for retinal branch vein occlusion.
- Early detection of RNFL damage aids in timely intervention for vision-threatening conditions.