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“anastigmatic”
anastigmatic (ahn ahs" tig MAHT ik) (adjective), more anastigmatic, most anastigmatic
1. Pertaining to a lens or lens system which is free of visual disturbance, or is able to form clear images.
2. A reference to a compound lens in which the separate components compensate for the visual defects caused by any unequal curving of one or more of the refractive surfaces of the eyes; usually, the cornea.
2. A reference to a compound lens in which the separate components compensate for the visual defects caused by any unequal curving of one or more of the refractive surfaces of the eyes; usually, the cornea.