31.
- Creator:
- Carmalt, William Henry (1836-1929)
- Published / Created:
- early 20th century
- Collection Title:
- Medical Instrument Collection
- Container / Volume:
- Box 019
- Image Count:
- 1
- Description:
- An incomplete set of trial lenses for visual testing for the bifocal component of an eyeglass prescription, from +0.5 diopters to 3.25 diopters. Each lens measures 2 cm. in diameter, set within a secondary lens measuring about 4 cm. in diameter. The...
- Subject (Name):
- Bernard Kosto, M.D. and Yale University. School of Medicine.
- Subject (Topic):
- Ophthalmology and Optometry
- Found in:
- Medical Historical Library, Cushing/Whitney Medical Library > Trial lens set









