astigmatism vs. myopia

astigmatism

noun

  1. Also called ·پ·· [uh, -, stig, -mee-, uh]. Ophthalmology. a refractive error of the eye in which parallel rays of light from an external source do not converge on a single focal point on the retina.
  2. Optics. an aberration of a lens or other optical system in which the image of a point is spread out along the axis of the system.

myopia

noun

  1. Ophthalmology. a condition of the eye in which parallel rays are focused in front of the retina, objects being seen distinctly only when near to the eye; nearsightedness ( hyperopia ).
  2. lack of foresight or discernment; obtuseness.
  3. narrow-mindedness; intolerance.