Abstract: A test slide is designed for use in a vision testing apparatus. The test slide comprises several component layers. Those layers include a light diffusing layer, an optotype film layer, a color correcting film layer, a frame separator, and a clear glass layer wherein the components are laminated together in the order identified.

Abstract: A vision test apparatus includes a light occluding casing and viewer connected to the casing which comprises a front lens. A mirror is rotatably mounted to the inside of the casing behind the front lens. An image display is movably mounted to the inside of the casing. An auxiliary lens is movably mounted to the inside of the casing and in alignment between the image display and the mirror whereby an image that is displayed on the image display passes through the auxiliary lens reflects off of the mirror and passes through the front lens.

Abstract: A method for conducting a color discrimination vision test includes displaying a test object comprised of two separate fields wherein one field has a fixed color hue and the other field has a variable color hue. The test subject is instructed to select which field corresponds to a color hue wherein one of the fields is the correct selection. The person makes the selection and the selection is recorded. Subsequent test objects are then displayed that are comprised of the fixed color hue field and the variable color hue field wherein the variable color hue field is a color hue different from the color hue of the previous test object. The display of subsequent test objects is then repeated and the test subject selections are then recorded.

Abstract: A retainer locks an eyeglass sideshield to a temple of an eyeglass frame. The retainer comprises a clamp, an ann and a hook. A clamp is adapted to attach to the temple of the eyeglass frame. The arm has a first end and a second end. The first end is connected to the clamp and the second end is connected to the hook. The hook comprises a lip adapted to engage the sideshield and prevents the sideshield from being removed from the temple.

Abstract: A vision tester having a casing horizontally adjustable with respect to a base. Inside the casing a rotating drum has a first end rotatably fixed to the casing and a second end unconnected to the casing and having an open portion. An illumination device is removably mounted to the casing and inserted inside the rotating drum through the open portion. The illumination device provides illunination to a plurality of test slides mounted to the surface of the rotating drum. A viewing device is mounted to the casing and provides left and right lenses simulating a far vision of the illuminated test slide. A pair of near vision lenses is rotatably mounted inside the viewing device and may be rotated to overlap the far vision lenses to simulate a near vision of the test slide. Peripheral vision is tested by light provided from an illumination source through fiber optic cables to peripheral vision test locations on the viewing device.