Lenses Course
This course provides a practical guide to geometrical optics, covering thin-lens basics, ray tracing, diopters, and spectacle design. Apply these skills to real prescriptions, vertex adjustments, refractive error corrections, and effective patient communication in optical settings, building confidence in clinical calculations and lens choices.

4 to 360 hours flexible workload
valid certificate in your country
What will I learn?
Gain practical expertise in geometrical optics for vision correction, reviewing thin-lens principles, sign conventions, and ray tracing. Apply to spectacle design, diopter computations, vertex distance corrections, and managing refractive errors, with examples and scenarios for confident calculations and explanations.
Elevify advantages
Develop skills
- Clinical ray tracing to predict image positions for precise spectacle design.
- Diopter and far point calculations using patient data for quick lens power determination.
- Mastery in selecting convex or concave lenses with clear justifications.
- Vertex distance adjustments to optimise prescriptions for comfort.
- Clear patient explanations of optics, limitations, and referrals.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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