A growing collection of practical digital tools designed to support optical professionals with lens selection, prescription calculations, frame suitability, prism calculations, acute eye triage and everyday dispensing tasks. Looking to develop your knowledge alongside these tools? Explore our optical training qualifications.

Search ophthalmic lens ranges by prescription, lens type, refractive index, treatment and other lens properties.

Calculate induced prism, decentration, resultant prism, prism splitting, vertical imbalance and slab-off.

Calculate transposition, spherical equivalent, principal meridians, vertex distance and vertical imbalance.

Assess frame geometry, cut-out requirements and prescription-related dispensing considerations before lens ordering.

Guide trained optical practice staff through acute eye-problem triage, with escalation prompts, clinician review and a printable or shareable summary.
We’re developing further free tools to support prescription calculations, dispensing and ophthalmic lens selection.
All feedback is welcome about our current tools, as well as things you’d like to see us develop.
You can contact us via info@insight-optical.co.uk