In a dioptric manner.

Acting as a medium for sight; making use of refraction (of lenses, etc.). / (obsolete) Pertaining to a diopter. / (obsolete) Capable of being seen through.

(in the plural) The branch of optics concerned with refraction. / A dioptric telescope.

plural of dioptric

the study of the refraction of light, especially by lenses

Alternative form of dioptric