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DDO 213 Synopsis of Ophthalmic Lenses

ND2 level14 topics

DDO 213 covers 14 topics. StudyPath paces them into daily study sessions that finish before your exam date, with practice questions and worked answers for each one.

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Course outline

The topics this course covers, in teaching order.

  1. Lens materials and types
  2. Properties of lens materials
  3. Material behavior and stress-strain
  4. Atomic and ionic configuration
  5. Primary and secondary bonding
  6. Molecules, inter-atomic distance and coordination number
  7. Atomic order and crystallization
  8. Crystal defects and solid solutions
  9. Allotropic forms, impurities and alloys
  10. Macromolecules and polymer structure
  11. Polymer stability, electrical behavior and deformation
  12. Ceramic phases, silicates and properties
  13. Types and characteristics of glass
  14. Stages and methods of glass production

A sample from this course

One topic, as StudyPath teaches it.

Lens materials and types

Lens materials and types are the foundation of modern ophthalmic lenses. Mastering the classification of materials (glass, plastic, high‑index, specialty) and the common lens types (single‑vision, bifocal, progressive, toric, multifocal) equips students to solve prescription, design, and cost‑related questions on the NUC CCMAS, NBTE, and NCCE exams.

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