Abstract: An improved ophthalmological self test unit for assisting in the self evaluation of the degenerative effects of certain eye disorders. The self diagnostic ophthalmological device includes a grid area having a re-writable surface which is fixably attached to a magnetic backed material for ease of attachment to any metallic surface such as might often be found on a refrigerator. Disposed on the grid surface is a central focusing means for assisting in the focusing of a patient's attention to the central portion of the high contrast grid structure. In an alternative embodiment a polar grid is utilized along with the central focusing means mounted upon the magnetic backed material.