Patented Welch Allyn Coaxial Vision optics, combined with 68 lenses in single-diopter steps for the precision you need to conduct a quality eye exam. Two unique filter selections provide optimum light levels for all types of eye exams.

Welch Allyn website for more information on the Prestige Coaxial-Plus Coaxial Ophthalmoscope: https://www.welchallyn.com/en/products/categories/physical-exam/eye-exam/ophthalmoscopes--traditional-direct/prestige_coaxial-plus_ophthalmoscope.html