Optical Calculator for ECPs 與 LensRx 使用情況與統計

The best Optical Calculator on the App Store. • Stock Lens Cutout • Lens Thickness • Vertex Compensation • Rx Transpose • Intermediate Rx • Prism Compounding • Contact Lens Rx • Induced Prism • Tilt & Wrap Compensation • Crossed Cylinders • Resolving Prism • Spectacle Magnification • Vertical Imbalance Compensation • Power in Oblique Meridians If you want another calculator, let us know and we will add it. The app is easy to use and to the point. ______________________________________________ About Subscription: • You may subscribe to our service for a free trial. This subscription auto-renews yearly at the specified price. • This subscription provides you full access to all our current and future optical calculators. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • The account will be charged for renewal within 24-hours prior to the end of the current period. • Payment will be charged to your iTunes Account at confirmation of purchase. • You may manage the subscription and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period will be forfeited when you purchase the subscription. • Privacy policy: http://www.lens-shapers.com/privacy • Terms of use: http://www.lens-shapers.com/terms