Curcumin in Ophthalmology: Mechanisms, Challenges, and Emerging Opportunities

Area of Science:

• Ophthalmology
• Pharmacology
• Materials Science

Background:

• Ocular diseases are a leading cause of vision loss globally.
• Curcumin, a natural polyphenol, possesses beneficial anti-inflammatory, antioxidant, and neuroprotective properties for eye conditions.
• Clinical application of curcumin is limited by poor solubility, bioavailability, and rapid elimination.

Purpose of the Study:

• To review advancements in curcumin delivery systems for ocular therapy.
• To highlight strategies overcoming curcumin's pharmacokinetic limitations.
• To explore curcumin's therapeutic potential in anterior and posterior segment eye diseases.

Main Methods:

• Review of emerging curcumin delivery platforms (proniosomal gels, transferosomes, cyclodextrin complexes, nanoparticles, hydrogels).
• Analysis of mechanisms of action, including modulation of NF-κB and TLR4 pathways.
• Evaluation of applications in anterior (keratitis, dry eye) and posterior (diabetic retinopathy, AMD) segment diseases.

Main Results:

• Novel delivery systems enhance curcumin's solubility, permeability, and ocular retention.
• Nanoparticle carriers facilitate sustained release and targeted delivery for posterior diseases.
• Cyclodextrin and mucoadhesive systems improve corneal penetration and retention for anterior diseases.
• Curcumin effectively modulates key inflammatory and oxidative stress pathways.

Conclusions:

• Advanced curcumin delivery systems show significant potential for treating diverse ocular diseases.
• These strategies address pharmacokinetic challenges, paving the way for clinical translation.
• Further clinical trials are essential to validate curcumin's safety and efficacy in ophthalmic therapies.