|Thanks to the grading
on the arc one can easily measure 0,05 mm or 1/4 diopter.
|The measurement system
consist of a series of stepped sights by which one can reach up to maximum
12 diopters, being each step equivalent to one diopter.
|The Optilasa Ophthalmometer
features and only knob which draws horizontally and vertically, as well
as an interior fixation point which makes it much easier to focus the patient's
|After having finished
with this operation , also with an only control knob we can proceed to measure
by drawing the sights on the graded arc up to 90º.
|Once the horizontal
and vertical measurement have been performed the posisition of the astigmatism
axis is exactly located and case it exists.
|The scale are reasonably
well ilumitated as a result of the biochromatic sights.
|It also features a
diopter adjustment on the eyepiece for achieving a full neatness in the