Ophthalmically acceptable compositions used in arresting the development of cataract,
presbyopia,
macular degeneration and other retinopathies,
glaucoma,
uveitis and various corneal disorders are disclosed. The compositions are also useful as a
prophylactic treatment to prevent or
delay development of age-related ocular disorders, which include
cataracts,
presbyopia,
glaucoma and
macular degeneration. The compositions comprise a pharmaceutically acceptable carrier or
diluent and at least one compound having the formula: [0001]where R1 and R2 are, independently, H or C1 to C3
alkyl; [0002]R3 and R4 are, independently C1 to C3
alkyl; and [0003]where R1 and R2, taken together, or R3 and R4, taken together, or both may be cycloalkyl; [0004]R5 is H, OH, or C1 to C6
alkyl; [0005]R6 is or C1 to C6 alkyl, alkenyl, alkynyl, or substituted alkyl or alkenyl; [0006]R7 is C1 to C6 alkyl, alkenyl, alkynyl, or substituted alkyl or alkenyl or where R6 and R7, or R5, R6 and R7, taken together, form a carbocycle or heterocycle having from 3 to 7 atoms in the ring.