Clinical Tools & Calculators
Accurate, instant tools designed to support everyday optometric decisions — from lens calculations to ocular measurements.
Contact Lens Fitting Calculator
Determine optimal contact lens parameters including base curve, diameter, and power adjustments.
Cornea Curvature
Convert keratometry readings (diopters to mm radius) and estimate corneal power.
Axial Length Estimation
Estimate axial length from refraction and keratometry for IOL power prediction or myopia risk assessment.
Vertex Distance
Correct spectacle power to contact lens power when vertex distance changes (e.g. 12 mm standard).
Cross-Cylinder Calculator
Quickly resolve cross-cylinder refractions to final sphere, cylinder, and axis.
Dry Eye Severity Grader
Grade DED severity from Grade 0 (Healthy) to Grade 4 (Very Severe) using TFOS DEWS II criteria — with instant management plan and referral triggers.
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