There's a diopter-adjustment lever on top of the eyepiece, and a proximity sensor turns it on as you hold it to your eye.
Identification of the best lens between scorers was always within 0.5 diopters.
Nonetheless, there was a clear tendency for the image to be sharper at 8.4 than at 0 diopters.
The eyes were covered with contact lenses (0 diopter) and artificial pupils of 4-mm diameter were fixed close to the lenses.
The resulting esotropia was moderate, ranging from 10 prism diopters to 25 prism diopters.
We accept that this, in addition to the fact the measuring light is a 632.7-nm laser, may explain the 10– diopters of hyperopia.
The resulting esotropia was moderate, ranging from 10 to 25 prism diopters.
All subjects were in excellent ocular health and in excellent general health, and no subjects had myopia$ 5 diopters.
