资料来源 : pyDict

折光正常

资料来源 : WordNet®

stigmatism
     n 1: the condition of having or being marked by stigmata
     2: (optics) condition of an optical system (as a lens) in which
        light rays from a single point converge in a single focal
        point [ant: {astigmatism}]
     3: normal eyesight