Weighing in ocular perfusion pressure in managing glaucoma

Area of Science:

• Ophthalmology
• Vascular Biology
• Glaucoma Research

Background:

• Growing evidence links vascular risk factors to glaucoma.
• Low ocular perfusion pressure (PP) shows a consistent association with glaucoma.
• The precise contribution of PP to glaucoma pathogenesis remains unclear.

Purpose of the Study:

• To critically evaluate the role of ocular perfusion pressure (PP) in glaucoma.
• To identify limitations and confounders in current research on PP and glaucoma.
• To outline future research directions for understanding PP's impact on glaucoma.

Main Methods:

• Review of existing literature on vascular risk factors and glaucoma.
• Analysis of the components of ocular perfusion pressure (PP), including intraocular pressure (IOP) and blood pressure (BP).
• Consideration of temporal fluctuations and treatment effects on PP, IOP, and BP.

Main Results:

• The association between low PP and glaucoma is consistently reported.
• The relative contributions of IOP and BP to PP are not fully defined.
• The dynamic interplay of PP with IOP and BP fluctuations requires further investigation.

Conclusions:

• Ocular perfusion pressure (PP) cannot be reliably used in individual glaucoma patient assessment currently.
• Further research, including randomized clinical trials, is essential to elucidate PP's role in glaucoma.
• Future trials should prioritize vision and structural preservation endpoints and address temporal dynamics and treatment effects.