Clinical Tools
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.
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Cornea Curvature
Convert keratometry readings (diopters to mm radius) and estimate corneal power.
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Axial Length Estimation
Estimate axial length from refraction and keratometry for IOL power prediction or myopia risk assessment.
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Vertex Distance
Correct spectacle power to contact lens power when vertex distance changes (e.g. 12 mm standard).
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Cross-Cylinder Calculator
Quickly resolve cross-cylinder refractions to final sphere, cylinder, and axis.
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