Results with the reasoning
Results appear instantly as you type, with no extra steps. Explanations of each formula and its clinical application are a tap away — perfect for learning, review, and cross-checking. The interface evolved directly from the acclaimed MediMath Medical Calculator.

A vital tool for every general or refractive ophthalmologist, ophthalmology resident, optometrist, and optician. The nine calculators:
- Base Curve
- Convergence
- Diopters from Focal Distance
- Intermediate & Near Vision Prescriptions from Standard Refraction
- Lens Power in Oblique Meridians
- Ocular Curve
- Optical Center Decentration
- Slab-Off (Induced Prism)
- Vertex Distance