Prescription check

Type a spectacle prescription for both eyes. Every check below is a real request to the validation endpoint, which answers 200 if a lab could make these lenses and 422 with the specific reason if it could not.

Prescription as written

	Sphere	Cylinder	Axis
Right (OD)
Left (OS)

Powers run in 0.25 steps. Axis is a whole number from 1 to 180. “Plano”, “DS”, a trailing D and comma decimals are all understood. Leave cylinder and axis empty when an eye needs no astigmatism correction.

POST /api/validate

Result

Nothing checked yet. Press “Check prescription”.

Intake feed

Prescriptions from the shop-floor order form arrive on their own and are posted to the endpoint without anyone pressing anything.

starting

Waiting for the first prescription to arrive.

GET /api/cron-sweep — Vercel Cron runs this at 03:00 UTC daily

Checks the shape of the numbers, not whether the prescription suits the person; a dispensing optician still signs off the order. Outer limits in lib/rx-core.js are sanity bounds, not lab tolerances — narrow them to your own order form.