Welch Allyn Coaxial ophthalmoscopes incorporate a patented* coaxial optical system, allowing the axis of illumination to be coincidental with the axis of vision into the retina, thereby eliminating annoying
shadows and facilitating examination through virtually any size pupil or vitreous disorder. The fundus and interior anatomy of the eye are viewed with precision and clarity.
Welch Allyn scopes offer a wide choice of 28 viewing lenses, ranging from –25 to +40 diopters, with fast, accurate one-hand selection. This helps compensate for patient or examiner refractive error, the position of the ophthalmoscope and the changes in viewing requirements necessitated by focusing on different points within the eye. Some coaxial models offer an additional crossed linear polarizing filter/red-free filter switch that increases the versatility of this instrument. When used in conjunction with available apertures, the coaxial ophthalmoscope yields 15 possible apertures. The illuminated lens dial enables the practitioner to check the lens being used for a particular examination even in a darkened examination room. The brow rest allows the practitioner to use his/her own eyeglasses comfortably and safely. It also steadies the instrument while in use.
