• retina
  • It is characterized by blurring of objects viewed at a distance, and is commonly the result of abnormal elongation of the eyeball - which causes the refractive image formed by the cornea and the lens to fall in front of the photoreceptors of the retina (Fig. 1). (utah.edu)
  • optical
  • When the axial length matches the optical power, without accommodation, the images of distant objects are focused sharply on the photoreceptors and the eye is emmetropic. (molvis.org)