Low Vision Aids & Magnification

Objectives: At the conclusion of this conference the resident will have an understanding of the basic principles behind low vision aids and will be able to solve optics problems related to low vision and magnification.

  • knowledge of types of magnification:  RDM, RSM, LVM, transverse magnification, axial magnification, angular magnification
  • ability to calculate magnification
  • clinical applications
  • Knapp's rule
  • Kestenbaum's rule
  • knowledge of low vision device options:  advantages and disadvantages
  • compare and contrast Galilean vs. Keplarian telescopes
  • knowledge of nonoptical aids and resources
  • clinical cases

 Reading Assignment: Please read David Guyton's Ophthalmic Optics and Clinical Refraction pages 37-48