Abstract: An apparatus and method for converting a non-rotatably diagnostic lens into a rotatable device for evaluation of various portions of the eye wherein the lens device includes a housing member having opposed end portions and associated wall portions, a viewing lens positioned adjacent one end portion of the housing member and at least one mirror or other viewing surface located adjacent thereto, the improvement comprising a groove formed in the outer periphery of the housing member and a peripheral member cooperatively engageable with the groove, the peripheral member being shaped and dimensioned such that the housing member is rotatably movable relative to the peripheral member when the peripheral member is engaged with the groove. This arrangement enables a user to hold the peripheral member stationary and thereafter rotate the entire lens device so as to selectively position the at least one mirror or other viewing surface at the appropriate eye location for ocular evaluation.

Abstract: A lens device for examining portions of the human eye comprising inner and outer members each having opposed end portions, the outer member having a viewing lens adjacent one end portion thereof, the inner member being rotatably mountable within the outer member and having at least one mirror associated therewith, the at least one mirror being located adjacent the viewing lens when the inner member is positioned within the outer member, the inner member being rotatably movable relative to the outer member such that the at least one mirror can be selectively positioned relative to the viewing lens so that the appropriate area of the eye can be examined. Preferably, the inner member is rotatable a full 360.degree. while the outer member remains stationary adjacent a patient's eye and, preferably, the inner member includes a plurality of circumferentially spaced mirrors.