Ophthalmic formulation which modulates dilation

A method for improving scotopic vision, comprising:

• administering to a subject's eye an amount of a first compound sufficient to inhibit pupil dilation and thereby reduce an amount of scattered light perceived by the subject wherein the compound comprises an imidazoline and wherein the reduction of scattered light improves the scoptopic vision of the subject.

A method of reducing an aberrant focus of scattered light rays in a subject's eye, comprising:

• administering to the subject's eye an amount of a first compound sufficient to inhibit pupil dilation and thereby reduce an amount of scattered light rays from entering the eye wherein the compound comprises an alpha-1-antagonist and wherein the reduction of scattered light rays reduces the aberrant focus of said scattered light rays.

A method of reducing an aberrant focus of scattered light rays in a subject's eye, comprising:

• administering to the subject's eye an amount of a first compound sufficient to inhibit pupil dilation and thereby reduce an amount of scattered light rays entering the eye wherein the compound comprises an imidazoline and wherein the reduction of scattered light rays reduces the aberrant focus of said scattered light rays.