A slit-lamp examination uses a specialised microscope and adjustable beam of light to provide a magnified view of the front and, with additional lenses, the back of the eye. It is central to detailed eye assessment.
What it Shows
The slit lamp allows inspection of the eyelids, conjunctiva, cornea, anterior chamber, iris, and lens, and with extra lenses it can visualise the vitreous and retina. The narrow beam helps highlight depth and transparency of tissues.
- Performed with the patient seated at the instrument
- Often combined with fluorescein dye to detect surface defects
- Enables assessment of inflammation, scarring, and implants
- High magnification reveals subtle structural changes
Uses
Slit-lamp examination is used in routine check-ups and in diagnosing conditions such as cataract, corneal disease, uveitis, and glaucoma-related changes. It also guides minor procedures performed at the microscope.
- Findings are recorded to track changes over time
- Helps plan further imaging or treatment
- Can be used to examine contact lens fit and surface health
- Often performed both before and after eye surgery
