| Sphere Power | Cylinder | Axis |
|---|---|---|
| Plano to -6.00 (in 0.25 steps) | -0.75, -1.25, -1.75 | Full circle in 10º steps |
| Plano to -6.00 (in 0.25 steps) | -2.25 | 10º, 20º, 70º, 80º, 90º, 100º, 110º, 160º, 170º, and 180º |
| +0.25 to +4.00 (in 0.25 steps) | -0.75, -1.25, -1.75 | 10º, 20º, 70º, 80º, 90º, 100º, 110º, 160º, 170º, and 180º |
| +0.25 to +4.00 (in 0.25 steps) | -2.25 | 10º, 20º, 160º, 170º, and 180º |
| –6.50 to –8.00 (in 0.50 steps) | -0.75, -1.25, -1.75 | 10º, 20º, 70º, 80º, 90º, 100º, 110º, 160º, 170º, and 180º |
| –6.50 to –8.00 (in 0.50 steps) | -2.25 | 10º, 20º, 160º, 170º, and 180º |

+8.00D to -12.00D (0.50 D steps after ±6.00)

SPH: +8.00D to -10.00D (0.50D steps after +6.00)
CYL: -0.75, -1.25, -1.75, -2.25
AXS: Full circle (10° degree steps)

+8.00D to -12.00D (0.50D steps after -6.00D and +5.00D)

+6.00D to -10.00D (0.50D steps after -6.00D)
Dominant eye: Choose lens power based upon spherical equivalent from spectacle Rx, adjusted for vertex distance if necessary. Best performance may be achieved by adding +0.50D to the lens power.
Non-dominant eye: Choose lens with the recommended “near boost” power added to the distance Rx, per the patient’s ADD requirements:
| Patient’s ADD | Near boost (Non-dominant eye) |
|---|---|
| Up to +1.00 | No near boost needed |
| +1.25 to +1.75 | +0.75D |
| +2.00 to +2.50 | +0.75D to +1.00D |
Example refraction and lens choice:
Rx: -1.50 OU with +1.75 ADD
Dominant eye: -1.00
Non-dominant eye: -0.75
Optimizations tips:
To improve distance vision: Perform over-refraction in +/-0.25D steps to dominant eye under binocular conditions.
To improve near vision: Perform over-refraction in +0.25D steps to non-dominant eye under binocular conditions.

SPH: +6.00D to -8.00D (0.50D steps after -6.50D)
ADD: +1.00, +1.50, +2.00, +2.50
Extended parameters available in XR.
Use the OptiExpert Calculator or follow the guide below:
| Spectacle Add | Dominant Eye | Non-dominant Eye |
|---|---|---|
| +0.75, +1.00, +1.25 | +1.50 D | +1.50 D |
| +1.50, +1.75 | +1.50 D | +1.50 N |
| +2.00, +2.25 | +2.00 D | +2.00 N |
| +2.50 or above | +2.50 D | +2.50 N |
To improve distance vision add +/-0.25D (up to +/-0.50D) to the eye that needs improvement. To improve near vision add +/-0.25D (up to +/-0.50D) to the eye that needs improvement.

SPH: -20.00 to +20.00 (±0.50 steps after ±6.50D)
CYL: -0.75 to -5.75 in 0.50D steps
AXS: Full circle in 5° steps
ADD: +1.00D, +1.50D, +2.00D, +2.50D, +3.00D, +3.50D, +4.00D
Use the OptiExpert Calculator or follow the guide below:
| ADD | Dominant Eye | Non-dominant Eye |
|---|---|---|
| +0.75, +1.00, +1.25 | +1.50 D | +1.50 D |
| +1.50, +1.75 | +1.50 D | +1.50 N |
| +2.00, +2.25 | +2.00 D | +2.00 N |
| +2.50, +2.75 | +2.50 D | +2.50 N |
| +3.00, +3.25 | +3.00 D | +3.00 N |
| +3.50, +3.75 | +3.50 D | +3.50 N |
| +4.00, +4.25 | +4.00 D | +4.00 N |
To improve distance vision add +/-0.25D (up to +/-0.50D) to the eye that needs improvement. To improve near vision add +/-0.25D (up to +/-0.50D) to the eye that needs improvement.

8.2/14.2: -10.00 to -0.25 (0.50D steps after -6.00)
8.6/14.2: -20.00 to +20.00 (plano excluded, 0.50D steps ±6.00D)

SPH: +6.00D to -8.00D (0.50D steps after -6.50D)
CYL: -0.75, -1.25, -1.75, -2.25
AXS: Full circle (10° steps)

| B.C. | DIA | SPH | ADD |
|---|---|---|---|
| 8.7 | 14.4 | +6.25D to +20.00D (0.50D steps after +6.50D) | +1.00, +1.50, +2.00, +2.50 |
| 8.7 | 14.4 | -8.50D to -20.00D (0.50D steps after +/-6.50D) | +3.00, +3.50, +4.00 |
| 8.4 | 14.4 | +20.00D to -20.00D (0.50D steps after +/-6.50D) | +1.00, +1.50, +2.00, +2.50, +3.00, +3.50, +4.00 |
Use the OptiExpert Calculator or follow the guide below:
| ADD | Dominant Eye | Non-dominant Eye |
|---|---|---|
| +0.75, +1.00, +1.25 | +1.50 D | +1.50 D |
| +1.50, +1.75 | +1.50 D | +1.50 N |
| +2.00, +2.25 | +2.00 D | +2.00 N |
| +2.50, +2.75 | +2.50 D | +2.50 N |
| +3.00, +3.25 | +3.00 D | +3.00 N |
| +3.50, +3.75 | +3.50 D | +3.50 N |
| +4.00, +4.25 | +4.00 D | +4.00 N |
To improve distance vision add +/-0.25D (up to +/-0.50D) to the eye that needs improvement. To improve near vision add +/-0.25D (up to +/-0.50D) to the eye that needs improvement.

SPH: +6.25D to +10.00D (0.50D steps after +6.50D) and -8.50D to -10.00D (0.50D steps)
CYL: -0.75, -1.25, -1.75, -2.25
AXS: Full circle (5° steps)
SPH: +10.00D to -10.00D (0.50D steps after ±6.50D)
CYL:-2.75 to -5.75 (0.50D steps)
AXS: Full circle (5° steps)

8.6 B.C.: +6.00D to -12.00D (0.50D steps after -6.00D)
8.3 B.C.: -0.25D to -6.00D

+6.00D to -12.00D (0.50D steps after -6.00D)

SPH: +6.00D to -9.00D (0.50 steps over -6.00)
CYL: -0.75D, -1.25D, -1.75D, -2.25D
AXS: 10º full circle
+6.00D to -10.00D
Up to +1.25D Add: Low Add OU
+1.50D to +1.75 Add: High Add OU with -0.25D/-0.50D over the distance power
+2.00 Add or Higher: High Add OU

+6.00D to -10.00D (0.25D steps)
+0.75D to +1.50D spectacle add: LOW ADD OU
+1.75D to +2.50D spectacle add: HIGH ADD OU

+4.00D to -9.00D (excludes plano)

+6.50D to -9.00D (0.50D steps after -6.50D)

SPH: Plano to -9.00D
CYL: -0.75, -1.25, -1.75
AXS: 90º, 20º, 180º, 160º

+6.00D to -7.00D
Lens Choice: Low ADD OU
Lens Choice: High ADD OU
Add –0.25D to the dominant eye.
Add –0.25D to the dominant eye.
Use a Low ADD in the dominant eye and a High ADD in the non-dominant eye.
Add +0.25D to the non-dominant eye.
Use a Low ADD in dominant eye and High ADD in non-dominant eye.
If near vision is still not acceptable, use High ADD in both eyes.
Add +0.25D to non-dominant eye.
