The present application relates to the technical field of
medicine, in particular to a flexible
lipoic acid nano ophthalmic preparation for improving
presbyopia, the flexible
lipoic acid nano ophthalmic preparation contains a substance with a core-shell structure, the shell layer of the substance covers the core layer, the core layer is
lipoic acid nano
liposome, and the shell layer is dendritic PAMAM; the flexible lipoic acid nano ophthalmic preparation includes the following 100% by weight of raw materials: 0.5-2.5% of lipoic acid, 1-6% of soybean
phospholipid, 0.1-0.7% of
cholesterol, 0.2-0.6% of dendritic PAMAM, 0.1-0.4% of
chitosan mixture, 1-3% of isotonicity
regulator, 0.1-0.3% of softener, and the balance is water for injection, and further includes a non-ionic pH
regulator to adjust the pH value of the preparation to 6.0-7.5. The preparation has superior corneal permeability,
cell compatibility and biodegradability, and has a long
drug release time.