Anterior segment imaging and the intraocular pressure lowering effect of cataract surgery for open and narrow angle glaucoma

Anterior segment imaging modalities including anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM) are increasingly widespread, and can quantify several parameters of the anterior segment, such as anterior chamber depth and angle anatomy. These parameters are important to assess, particularly in patients with forms of narrow angle glaucoma. In many cases of open and narrow angle glaucoma, cataract extraction has been shown to result in favorable modification of these parameters, and a lasting decrease in intraocular pressure. Anterior segment imaging has the ability to enable the development of predictive models regarding the potential intraocular pressure lowering effect of cataract extraction in a given individual.