Patent ID: 8604098

Claim:
A method for modifying a composition, the method comprising: (a) a triggering step, comprising applying electromagnetic energy of a first wavelength and intensity to a pre-polymerized composition, wherein the triggering step causes photoisomerization of a masking compound in the composition; and (b) a polymerization or crosslinking step, comprising applying electromagnetic energy of a second wavelength and intensity to the photoisomerized composition, wherein the polymerization or crosslinking step causes polymerization or crosslinking of a prepolymer in the composition to form a polymerized composition; wherein the photoisomerization converts the masking compound from a first photoisomer to a second photoisomer, and wherein the second photoisomer absorbs less light at the second wavelength than does the first photoisomer; and wherein the composition is an intraocular implant.