Optical Coherence Tomography (OCT-scan)
Age related macular degeneration (AMD)
Optical coherence tomography is a diagnostic imaging technology. OCT scan captures micron resolution 3D images.
Higher scanning speed allows for denser sampling and better registration, allowing better visualization of structures deep to the retina.
The major drawback to quantitative assessment is that quantitative scans are prone to artefacts.
OCT has become a valuable tool in the initial diagnosis of glaucoma and subsequent monitoring of glaucoma progression over time. OCT scans allow quantitative documentation and analysis of the areas mostly affected by glaucoma.
Early detection of glaucoma can be treated successfully thus preserving eye sight.
Macular hole / OCT scan
Dry age-related macular degeneration accounts for significant loss of vision in elderly populations. OCT- features of dry AMD appear as discrete elevation of retinal pigment epithelial layer. An OCT-scan can work out the extent of dry AMD
In wet AMD, the most characteristic findings on OCT-scan are the presence of an irregularly shaped pigment epithelial layer with adjacent sub retinal haemorrhages and
sub retinal fluid.
If detected in early stages, wet AMD can be treated with intraviteral anti-VEGF injections.
A macular hole is a full thickness defect at the macular centre. A macular usually causes decrease vision.
An OCT-scan shows a full thickness defect in neurosensory retina. Success of treatment depends on size of the macular hole.
Although OCT scans are not needed for the diagnosis of diabetic retinopathy, OCT findings of diabetic retinopathy are well characterized on OCT.
To check the health of the retina in depth, we do recommend an OCT scan at a very small cost.