Refracta

Essential optical calculations in one fast, offline, professional toolkit — built for dispensers, optometrists, assistants, and students.

Refracta simplifies complex optical math so you can focus on delivering accurate outcomes with confidence.

Prism & Vertex Distance

Calculate prism power and vertex distance corrections instantly.

Lens Thickness & Blank Size

Estimate lens thickness and minimum blank size for any prescription.

Transposition & Magnification

Convert between prescription forms and calculate spectacle magnification.

Refractive Index

Review refractive index and field of view relationships.

Offline, Always

Works entirely offline in any clinical or dispensing environment.

Designed for students & professionals. Built for precision.

Whether you’re verifying a lens, refining a prescription, or double-checking calculations chair-side, Refracta supports your work without replacing clinical judgement.