Essilor MYOPIA EXPERT 700, Руководство пользователя

Страница: 78 / 132

76
Fig. 42
Tap on
“Graphs”
at the top left to display the vision quality summary (Fig.43). This section displays:

Zernike Coefficient pyramid: represents the numerical value of each coefficient by means of a
grayscale; the greater the coefficient, the greater the color contrast with the pyramid background.

Point Spread Function: represents the intensity of the wavefront in the retina.

Spot Diagram: represents the spatial distribution of the wavefront over the retina.
 Visus/Visus Low Contrast: represents the patient’s real vision with high and low contrast.
The data displayed refer only to the component induced by the anterior surface of the cornea, not by the
eye entire optical system.
Press the
“Maps”
button to return to the maps display.
The
“Pupil”
button opens a panel (Fig.43) where you can select the diameter of the pupil (in a range
between 2 mm and 7.5 mm) to see how the aberrations change as the pupil diameter varies.