Complement regulation in the eye: implications for age-related macular degeneration

Area of Science:

• Ocular immunology
• Complement system biology
• Inflammation research

Background:

• The complement system is vital for immune defense but requires strict regulation to prevent tissue damage.
• Ocular immune privilege necessitates controlled complement activity for vision preservation.
• Dysregulated complement activation can lead to parainflammation or overt inflammation, impacting the visual axis.

Purpose of the Study:

• To review recent advances in understanding complement system dysregulation in ocular diseases.
• To highlight therapeutic strategies for age-related macular degeneration (AMD) targeting the complement system.
• To provide an overview of complement's role in the posterior eye segment and related diseases.

Main Methods:

• Literature review of complement system research in ocular diseases.
• Analysis of therapeutic approaches for atrophic AMD that have reached clinical trials.
• Synthesis of current knowledge on complement activation and inhibition in the eye.

Main Results:

• Complement dysregulation is implicated in glaucoma, diabetic retinopathy, and AMD.
• Intense research in AMD pathogenesis has led to novel complement-targeted therapeutics.
• Several complement-targeting therapies for atrophic AMD are in clinical trials.

Conclusions:

• The complement system plays a critical role in ocular health and disease pathogenesis.
• Targeting the complement system offers promising therapeutic avenues for AMD and other ocular conditions.
• Continued research is essential to refine complement-based strategies for treating eye diseases.