Clinical Tools & Calculators

Determine optimal contact lens parameters including base curve, diameter, and power adjustments.

Convert keratometry readings (diopters to mm radius) and estimate corneal power.

Estimate axial length from refraction and keratometry for IOL power prediction or myopia risk assessment.

Correct spectacle power to contact lens power when vertex distance changes (e.g. 12 mm standard).

Quickly resolve cross-cylinder refractions to final sphere, cylinder, and axis.

Grade DED severity from Grade 0 (Healthy) to Grade 4 (Very Severe) using TFOS DEWS II criteria — with instant management plan and referral triggers.

Plot AL measurements against East Asian age-normalised percentile curves (P5–P95). Tracks progression rate and flags the IMI > 0.10 mm/year and ≥ 26 mm high-myopia thresholds.

Stratify glaucoma suspect risk using CCT-adjusted IOP, vertical CDR, CDR asymmetry, age, family history, and myopia. Outputs risk tier and EGS/AAO-based management recommendation.

Evidence-based co-management reference for atropine 0.01%, 0.05%, and 0.1% in myopia control — ATOM & LAMP trial efficacy, side-effect profiles, and follow-up schedules.