A Liposomal Delivery System of Blueberry Anthocyanins Ameliorates Corneal Laser Injury

This study aims to develop and systematically evaluate a new lipid-based formulation of blueberry anthocyanins, which can accelerate the healing effect of the cornea. The study first successfully screened and optimized the formulation and preparation process for blueberry anthocyanin liposomes. Characterization via transmission electron microscopy and dynamic light scattering revealed uniformly distributed, near-spherical liposomes with distinct phospholipid bilayers. Key physicochemical parameters-particle size, zeta potential, encapsulation efficiency, and drug loading capacity-all met formulation standards. In vivo pharmacodynamic experiments demonstrated that topical administration of blueberry anthocyanin liposomes significantly accelerated the repair process and effectively mitigated depressional damage to the corneal epithelium in a New Zealand white rabbit corneal injury model induced by 10.6 μm mid-infrared CO₂ laser. In summary, the blueberry anthocyanin liposomes successfully prepared in this study exhibit excellent performance, effectively enhancing drug exposure levels in vivo and promoting corneal repair. This provides reliable experimental evidence for the development of plant natural active ingredients in ophthalmic treatments.