Indirect ophthalmoscopy lens retaining ring

Description

FIG. 1 is a side elevational view of an indirect opthalmoscopy lens retaining ring, showing my new design;

FIG. 2 is a cross-sectional view taken along line 2--2 of FIG. 1;

FIG. 3 is an end elevational view taken from the left of FIG. 1; and,

FIG. 4 is an end elevational view taken from the right of FIG. 1.