: The action of distorting an image by viewing through a medium

: Deflection from a straight path undergone by a light ray

: The ability of the eye to refract light that enters it so as to form an image on the retina.

: Measurement of the focusing characteristics of an eye or eyes.

  • Black Instagram Icon
  • Black Facebook Icon
  • Black YouTube Icon
  • Black Pinterest Icon
  • Black Twitter Icon

© 2020 by COLLEEN DAVID - Southern California Based Photographer