Basics of Optics


Basics of Optics


  1. Only curved surfaces can bend light.

  2. Curvature is directly proportional to Bending (i.e. ↑ the Curvature ↑ bending)

Power:

→ Power of the eye → + 60 D

→ Power of the cornea → 43 D (70%)

→ Power of the lens → 19 D

→ “+” indicates convergence

→ “–” Indicates Divergence

→ Power of the eye contributed by:

→ Anterior surface of cornea (maximum contribution); Posterior surface of cornea

→ Anterior surface of lens; Posterior surface of lens.

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