Editorial: Imaging in glaucoma

Schlemm's canal in the POAG eyes with high myopia, anterior scleral thickness might be a novel clinical indicator in the prediction and evaluation of POAG in high myopes. Furthermore, the increased aqueous humor outflow resistance caused by the abnormal ocular anterior segment morphology in eyes of POAG patients with high myopia might also be another potential reason for progression of visual field loss in these population.In a retrospective case-control study conducted in the Hubei region, Wang et al. investigated the pathogenesis of primary angle-closure glaucoma (PACG) and its relationship to the anatomical structure of the anterior segment, obtaining biometric parameters through SS-OCT. They demonstrated that eyes of patients with PACG have a smaller anterior segment space, narrower angles, thicker lens, thinner cornea, shorter axial length, flatter cornea, and more anteriorly positioned lens compared to the normal control group. The study highlights the significant discrepancies in anterior segment biometric parameters between patients with PACG and normal controls, reinforcing the notion that the pathogenesis of PACG is intrinsically linked to disparities in the anatomical configuration of the anterior segment. Since eyes of PACG patients have crowded anterior segment with shallower anterior chamber depth and narrowed angle, shorter axial length, and thicker and more anterior lens, it is reasonable to emphasize the importance of the assessment of anterior segment biometric parameters using SS-OCT to stratify the risk of developing angle closure in suspect eyes, enabling early intervention.Although perimetry is a functional test and not an imaging modality in glaucoma itself, the automated and precise localization of predicted structural and functional information is now possible with new technologies, serving as a crucial initial step towards a more integrated diagnosis and monitoring of glaucoma progression in terms of structure and function. That being said, Al-Nosairy et al. explored a novel kinetic method for visual field screening called rapid campimetry. It was designed to screen the central ten degrees of visual field, an important region in glaucoma. Rapid campimetry is found to be robust even under suboptimal testing conditions and demonstrated good to excellent reliability between testing visits, which highlights its promise as a screening test and potential, upon proper future optimizations.The potential role of the microvasculature and blood flow in the pathophysiology of glaucoma has been extensively debated and investigated. In this context, OCT Angiography (OCTA) has emerged as an invaluable non-invasive imaging modality used to characterize the vasculature in the retinal layers, supplying detailed data on the microvasculature of the optic nerve head and retina. 3 Previous studies demonstrated that OCTA vessel density was lower in glaucoma patients and was highly correlated with visual field indices. [4][5][6] Shen et al. presented a comprehensive overview of the application of OCTA in glaucoma, showing its current status and future directions. They also