The subject matter of the present invention is Zn N-acetyltaurinate of formula: [CH3—CO—NH—CH2—CH2—SO3]2−Zn2+ for preventing and/or treating diseases with lipofuscin accumulation due in particular to aging or to oxidative stress, and for preparing a medicament that is of use in treating these diseases.Use: treatment of diseases related to aging or to oxidative stress, in particular age-related macular degeneration and diabetic retinopathy.