Stigmatism vs. Astigmatism

The condition of being affected by stigmata.

A visual defect in which the unequal curvature of one or more refractive surfaces of the eye, usually the cornea, prevents light rays from focusing clearly at one point on the retina, resulting in blurred vision.

The state of a refracting or reflecting system in which light rays from a single point are accurately focused at another point.

(optics) A defect of a lens such that light rays coming from a point do not meet at a focal point so that the image is blurred.

Normal eyesight.

(pathology) A disorder of the vision, usually due to a misshapen cornea, such that light does not focus correctly on the retina causing a blurred image.

(optics) Image-formation property of an optical system which focuses a single point source in object space into a single point in image space

A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision.

(medicine) Normal eyesight, anastigmatic state

(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea

(pathology) State of having stigmata

(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point

The condition of having or being marked by stigmata

(optics) condition of an optical system (as a lens) in which light rays from a single point converge in a single focal point

Normal eyesight