Screening
Which population to screen
Glaucoma is the second leading cause of blindness around the world. Half of these cases are due to angle closure.[3] Because angle closure is potentially preventable, screening is immensely important.
Everyone age 40 years or older undergoing an eye examination, either routinely or for a specific reason, should be screened for angle closure.[3][13]
Which test to use
The definitive test for the identification of angle closure and eyes at risk is gonioscopy.
Other methods to identify eyes at risk include ultrasound measurement of anterior chamber depth (ACD) and determining the ACD to axial length ratio. High frequency ultrasound (ultrasound biomicroscopy, UBM) or anterior segment ocular coherence tomography (OCT) may also be used to image the angle.
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