Anterior chamber depth measurement in clinical practice

This study compares the validity of anterior chamber depth estimates provided by a slit-lamp technique with those obtained from pachometry and ultrasonography. The technique provides depth estimates which are valid to within +/- 0.33 mm relative to standard pachometry, and to within +/- 0.42 mm relative to ultrasonography. The technique is simple to perform, requires no extra slit-lamp attachments, and may be carried out on any slit-lamp which has a calibrated variable length of slit.