Without posting a base curve chart, we will generalize the base curve selection. We begin with a plano lens. The base curve would most likely fall around 6 base. Going in the plus Rx direction- the base curve goes “higher”: 7 base, 8 base, 10 base. Going in the minus Rx direction – the base…

When a patient is interested in a wrap style frame, the Rx should be reviewed. An Rx that falls in the range of Sph.-3.00 to (+Sph. “anything almost”), is ideal. Care needs to be taken with a large cyl, which can drop the base curve lower. The lens material best suited for wraps is polycarbonate….