Several accessories increase the utility of the Schultz-Crock ophthalmoscope. These include a teaching mirror, filters, belt clip for the battery, and an adaptor for a 7.5 v transformer.
Hilton GF. Accessories for Binocular Indirect Ophthalmoscopy. Arch Ophthalmol. 1971;85(6):709–711. doi:10.1001/archopht.1971.00990050711011
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