Posterior segment photography refers to imaging of the retina, macula, vessels, and optic nerve head at the back of the eye. It uses specialised fundus cameras or scanning laser systems.
Method
Digital fundus cameras capture colour or monochrome images through the pupil, often after dilation. Widefield systems can image far peripheral retina, and different filters highlight particular structures or pathologies.
- Non-contact technique that is generally comfortable
- Images can be centred on the macula, optic disc, or peripheral areas
- Multiple fields may be combined for broader coverage
- Can be integrated with angiography or autofluorescence modules
Clinical Uses
Posterior segment photography is central to screening and monitoring conditions such as diabetic retinopathy, macular degeneration, and glaucoma. It allows objective comparison of disease status over time.
- Supports remote grading in teleophthalmology programmes
- Documents treatment effects after laser or intravitreal injections
- Important for education and case discussion among clinicians
- Images are interpreted alongside examination and OCT findings
