By grading the angle using the Van Herick technique it also allows an estimation of the probability of closure and an estimated angle in degrees (see table 2).

Nov 16, 2025 · The Van Herick system uses a standard grading scale from 4 down to 0, which is based on the ratio of the peripheral anterior chamber depth (AD) to the corneal thickness (CT).

Nov 8, 2017 · The van Herick test can be helpful in the evaluation of confusing angles because it augments gonioscopic findings by giving a separate indication of the depth of an angle.

Jul 27, 2025 · The Van Herick grading system compares the depth of the peripheral anterior chamber to the thickness of the cornea. This comparison results in a numerical grade, typically …

Jun 14, 2025 · The Van Herick method involves grading the depth of the anterior chamber angle based on the ratio of the peripheral anterior chamber depth to the corneal thickness.

Gonioscopy grading systems were established to provide a standardized description of the anatomy of the anterior chamber angle. There are many grading systems used today.

The traditional van Herick grading system provides a 4-point grading scheme, in which limbal ACD is graded ≤25% (VHG 1), 25% (VHG 2), >25% and ≤50% (VHG 3), and >100% of the …

Both the ACD and ACA can be measured or graded by various means. Prior to cataract surgery, or refractive lens exchange, biometry accurately measures a number of components including …

Mar 27, 2025 · This table shows the interpretation of the corneal section to gap ratio when determining the grading of the anterior chamber angle using the Van Herick technique.

The Van Herick technique involves assessing the depth of the anterior chamber at the limbus using a slit lamp. Among its benefits, this non-contact technique is quick and straightforward.