Bruch’s membrane imaging visualises the thin, multi-layered structure between the retinal pigment epithelium and the choroid. Changes in this membrane play a key role in age-related macular degeneration and other disorders.
Techniques
High-resolution OCT, often with enhanced depth imaging, can delineate Bruch’s membrane as a reflective line beneath the retinal pigment epithelium. In some cases, angiography and other imaging help infer its integrity and calcification.
- Shows drusen, deposits, and breaks associated with macular degeneration
- Helps identify features such as choroidal neovascularisation entry points
- Advanced analysis can measure thickness or undulation
- Image quality depends on fixation and signal strength
Clinical Significance
Imaging of Bruch’s membrane aids in understanding and monitoring diseases like age-related macular degeneration, angioid streaks, and high myopia-related changes. It supports risk assessment and therapeutic planning.
- Presence and characteristics of drusen reflect underlying membrane alterations
- Breaks may predispose to neovascular complications
- Serial imaging helps evaluate progression of degenerative changes
- Findings are interpreted with retinal pigment epithelium and choroidal imaging
