Creating Contact Lens Geometries (Rigid) - OCULUS Easygraph 70620 Instruction Manual

Page 66
Two programs are available for creating serial
contact lens data.
The [Add lenses] button is used to create rigid lens
geometries (cf. Next page).
The [Add soft lenses] button is used to create soft
lens geometries (cf. 7.5.4.3.2 page 68).
Clicking the [Add lenses] button opens the following
input menu:
A new series of contact lenses can be created by
entering the geometric data of the contact lens series
with minimum / maximum values and increments.
The following data must be defined:
Example:
Min:
r0 7.20
dr0 0.00
Ecc 0.00
ø 9.30
Instruction Manual Easygraph

7.5.4.3.1 Creating Contact Lens Geometries (Rigid)

Spheric
Max: Step Min:
9.60 0.10 7.20
0.00 0.00 0.30
0.00 0.00 0.00
10.30 0.50 9.30
The [Save + Quit] button stores changes made and
returns to the "Confirm Contact Lens" display.
The [Cancel] button rejects all changes and likewise
returns to the "Choose Contact Lens" display.
1. Base curve parameters
• r0: Central radius of contact lens curvature
(steepest meridian of toric lenses)
• dr0: Curvature differences of main meridians at
the center (i.e. of toric lenses; this value = 0 in the
event of rotationally symetrical lenses).
• Ecc: Eccentricity of the contact lens (i.e. aspheric
lenses; this value = 0 in the event of spheric
lenses).
• ∅: Total diameter of the contact lens.
Toric Lens
Max: Step
9.60 0.10
1.00 0.10
0.00 0.00
10.30 0.50
Aspheric
Min: Max: Step
7.20 9.60 0.10
0.00 0.00 0.00
0.40 1.00 0.10
9.30 10.30 0.50