Method and apparatus for measuring visual sensitivity and optical properties of components of the eye

A method for psychophysical determination of an ocular component in an eye of a test subject, said method comprising:

• providing a test subject;
• employing an apparatus to test said test subject, said apparatus comprising;
• a light source comprising at least one electronically controlled, light-emitting element wherein the output of said light-emitting element can be varied electronically by said test subject;
• control circuitry for energizing said light-emitting element;
• an aperture for presenting a test stimulus from said light-emitting element to a test subject;
• and
• a head positioning device for aligning an eye of a test subject in a position to view said test stimulus;
• determining the response of said test subject to the output of said light-emitting element;
• and
• relating said response to the extent or condition of an ocular component in said test subject.

A method for psychophysical determination of visual sensitivity in an eye of a test subject, said method comprising:

• providing a test subject;
• employing an apparatus to test said test subject, said apparatus comprising;
• a light source comprising at least one electronically controlled, light-emitting element wherein the output of said light-emitting element can be varied electronically by the subject until the flicker of said light source appears to be eliminated;
• control circuitry for energizing said light-emitting element;
• an aperture for presenting a test stimulus from said light-emitting element to a test subject;
• and
• a head positioning device for aligning an eye of a test subject in a position to view said test stimulus;
• determining the response of said test subject to the output of said light-emitting element, whereby said subject adjusts the light source until said light source appears to have no flicker;
• and
• relating said response to the extent or condition of visual sensitivity in said test subject.

An apparatus for psychophysical determination of visual sensitivity in an eye of a test subject, said apparatus comprising:

• a light source comprising at least one electronically controlled, light-emitting element wherein the output of said light-emitting element can be varied electronically by the subject until the flicker of said light source appears to be eliminated;
• control circuitry for energizing said light-emitting element;
• an aperture for presenting a test stimulus from said light-emitting element to a test subject;
• and
• a head positioning device for aligning an eye of a test subject in a position to view said test stimulus.