Vertex Distance Calculators
Compensate spectacle lens power when the back vertex distance changes.
OPTOMINSIGHT • CLINICAL LEARNING TOOLS
Clinical Optics Tools
Your essential tools for optical calculations, clinical optics, refraction and contact lens practice. Search by topic or choose a category to get started.
7 categories available
Lens Optics
Explore lens surface curvature and focal power.
Lens Thickness & Sagittal Depth
Calculate sagittal depth, central thickness and edge thickness.
Corneal Optics
Convert corneal radius of curvature to dioptric power.
Refraction & Crossed Cylinders
Explore oblique crossed-cylinder calculations in clinical optics.
Contact Lens Optics
Explore magnification concepts relevant to contact lens practice.
Prismatic Effect
Calculate the prismatic effect induced by sphero-cylinder lenses.
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For educational use. Check units and input values, and use results alongside your optometry knowledge, clinical judgement and relevant professional guidance.