Light adjustable intraocular lens with a modulable absorption front protection layer

A method of adjusting an optical property of a modulable absorption light adjustable intraocular lens (IOL) for implantation into an eye, the method comprising:

• reducing an absorption of a modulable absorption compound of a modulable absorption front protection layer of the intraocular lens by applying a high-to-low modulating stimulus for transforming the modulable absorption compound from a high-absorption conformation to a low-absorption conformation, the intraocular lens having been previously implanted into an eye;
• changing an optical property of a light adjustable lens of the intraocular lens by applying an adjusting irradiation;
• and
• transforming the modulable absorption compound from a low-absorption conformation to a high-absorption conformation by applying a low-to-high modulating stimulus,
• wherein the light adjustable lens comprises a photo-modifiable material that includes:
• a polymer host matrix;
• at least one of monomers and macromers, capable of photo-induced polymerization;
• a photoinitiator;
• and
• dispersed ultraviolet absorbers,
• wherein the modulable absorption front protection layer includes one of:
• a layer in the frontal region of the light adjustable lens;
• a layer attached onto the frontal region of the light adjustable lens;
• and
• a layer deposited onto the frontal region of the light adjustable lens.