Explanations a tap away
Results appear instantly, with no extra steps. Tap the "i" on any calculator for the formula and its clinical application — useful for review, cross-checking, and learning. The interface evolved directly from the 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