Anterior chamber analysis refers to imaging and measurements of the front part of the eye between the cornea and iris, including the drainage angle. It helps assess risk of angle-closure glaucoma and other anterior segment disorders.
Techniques
Methods include anterior segment OCT, Scheimpflug tomography, and ultrasound biomicroscopy, which provide cross-sectional images and quantitative data on chamber depth, angle width, and lens position. Some devices create three-dimensional reconstructions.
- Non-contact optical systems are commonly used in clinic
- Ultrasound methods are useful when the cornea is opaque
- Measurements can be taken before and after interventions such as lens surgery
- Angle metrics correlate with propensity for closure or crowding
Clinical Uses
Anterior chamber analysis aids in screening for narrow angles, planning procedures such as laser iridotomy or lens extraction, and evaluating implanted devices. It also documents structural changes in conditions like anterior segment dysgenesis.
- Objective data complement gonioscopy findings
- Serial imaging monitors anatomical changes over time
- Helps predict the effect of lens removal on angle configuration
- Supports patient counselling and surgical decision-making
