Apparatus for self-examination of the human eye comprising a pen light for generating a beam of light, a reflecting sphere for orthogonally reflecting the beam through an opaque disc having a pin hole and a cylindrical head enclosing the reflecting sphere and opaque disc. The reflecting sphere is adjustable along its axis, and functions to reflect a uniformly diffuse beam of light through the pin hole. When the pin hole is at the anterior focus of the human eye and along its pupilary axis, a viewer can see opacities in the eye.
There is disclosed herein an inexpensive hand-held device to allow a person to monitor the development of his cataract and record it. The device comprises a light source, a diffusion substance and a pinhole.
An ophthalmic device for the examination and detection of opacities in the ocular media comprising a cylindrical housing, a reflecting means located in the housing adapted to reflect light through an illuminating through-hole in the housing, and a viewing port in the housing disposed opposite the illuminating through-hole, the illuminating through-hole, the reflecting means and the viewing port being adapted to define a light path.
