According to the Van Herick technique, which angle grade indicates the potential for closure?

In the Van Herick technique, assessing the anterior chamber angle is critical for determining the risk of angle closure. The grading system ranges from Grade 1 to Grade 4, with each grade reflecting the width of the angle observed during the examination.

Grade 1 indicates a very narrow angle, where the angle opening is significantly reduced, suggesting a higher risk for closure. When the angle is narrow, it raises concerns about the potential for increased intraocular pressure and may lead to acute angle-closure glaucoma. This grade is particularly important because it signifies that the anatomy of the eye is such that there is a predisposition for conditions that can lead to vision loss or discomfort.

As the grades progress to Grades 2, 3, and 4, the width of the angle increases, reflecting a greater size of the angle opening and a decreasing potential for angle closure. Consequently, Grade 1 is crucial in identifying individuals at a higher risk level for angle closure, making it the correct response in the context of this question.