Rx LimitsAvailable on the PRO plan and above. This is a demo of our Rx limiting feature. The limits are currently set at: Lens A SPH 2. 00 to +2. 00 Lens B SPH 4. 00 to +4. 00 Lens C SPH 20. 00 to 4. 00 and +4. 00 to +20. 00 To check that the limits are working properly, follow these steps, On the ENTER MANUALLY step select SPH between 2. 00 and +2. 00. You will see both Lens A & Lens B on the selection screen. Select SPH 3. 00. You will see only Lens B on the