Abstract: A birdfeeder conveniently separable for loading with bird feed is disclosed. The feeder is separable into two portions, with the mechanism for separating and holding the birdfeeder together being constructed completely integral with the two portions. In an upper portion, a lock rod connected to a protective top extends through a tube extending through a feed reservoir from a base of the birdfeeder, the base and reservoir being part of the lower portion. On a portion of the lock rod that extends into the base is provided a groove that is engaged by a spring-loaded pin, the pin in turn extending horizontally from the base and configured as a bird perch so that when the perch is pulled outward, the upper portion may be separated from the lower portion, providing access to fill the reservoir.

Abstract: A method for diagnosing a plurality of disorders of optical media of the eyes is disclosed. A beam of light is directed into eyes of a subject, and the retinal reflection, or reflex, emerging from the pupil is detected and analyzed. In some instances intensity levels of the reflex are compared against a reference reflex representative of a normal eye to isolate abnormal ocular conditions, and in other instances the subject's reflex is divided into portions and comparisons made between selected portions to isolate abnormal ocular conditions. Additionally, binocular status is evaluated by examining the eyes simultaneously.