How does the Coaxial Vision System help when performing a fundus exam?
When viewing the fundus it is extremely important that the light beam from the ophthalmoscope and your viewing angle are in close proximity. The path your eye follows through the patient’s eye to the fundus is extremely narrow; therefore, the most efficient method of viewing the fundus is to keep the ophthalmoscope’s light beam and your viewing path in near coincidence. In all other viewing systems, the viewer looks over the top of the mirror from a steeper angle. The visual axis and axis of illumination do not coincide, so parallax and resultant shadowing are increased.
