New perspectives on target intraocular pressure.

Area of Science:

• Ophthalmology
• Glaucoma Research
• Intraocular Pressure Management

Background:

• Strong evidence supports intraocular pressure (IOP) reduction for glaucoma prevention and management.
• Current target IOP strategies (percentage reduction, calculated IOP, or fixed range) lack validated efficacy.
• Understanding of IOP's role in glaucoma pathogenesis is evolving, including factors like IOP fluctuation and pressure differentials.

Purpose of the Study:

• To review the evidence supporting target IOP in glaucoma.
• To discuss new developments in IOP and glaucoma pathogenesis.
• To explore emerging strategies for setting and assessing target IOP.

Main Methods:

• Literature review of studies on IOP lowering and glaucoma.
• Analysis of recent research on IOP fluctuation and pressure differentials.
• Synthesis of emerging approaches for target IOP setting and response assessment.

Main Results:

• While IOP lowering is beneficial, the optimal amount and quality of reduction remain undefined.
• Existing target IOP strategies have not been validated.
• Factors like IOP fluctuation and pressure differentials are increasingly recognized as important but are not typically included in target IOP calculations.

Conclusions:

• Current target IOP strategies may be undermined by their exclusion of critical variables.
• Further research is needed to develop validated and comprehensive target IOP strategies.
• Emerging approaches aim to incorporate a more nuanced understanding of IOP's influence on glaucoma risk.