The subject invention provides a mechanism by which steroidal quinol
compounds confer beneficial ophthalmic effects. The subject compounds
possess a lipophilic-hydrophilic balance for transcorneal penetration and
are readily reduced into parent phenolic A-ring steroid compounds to
provide protection or treatment against various ocular symptoms and
disorders. The compounds according to the subject invention appear to be
highly advantageous as prodrugs to provide protection and/or treatment
against ocular disorders. These prodrugs confer lipid solubility optimal
for transocorneal penetration and are readily converted to endogenous
reducing agents into active phenolic A-ring steroid compounds. To the
extent that these prodrugs have reduced feminizing effects and systemic
toxicity, they would be expected to be quite advantageous for protecting
or treating the eye against ocular disorders such as cataract or glaucoma
without undesired (systemic) side effects).