A bright focal light source, such as a direct ophthalmoscope or transilluminator, should be shone into each eye and the constriction ... ophthalmoscope (Fig. 3) or slit lamp (biomicroscopy).

In those cases, Rapoport explains, “Medicare covers a complete medical eye exam, which includes a slit lamp and dilated fundus exam, vision, pressure, glaucoma, cornea and macular degeneration ...