ˌdaɪˈɒptrɪkəl

Definitions

1. adjective

relating to the refraction of light by lenses or other optical systems, or to the correction of vision by glasses or contact lenses

“The dioptrical properties of the new telescope allowed for sharper images and better resolution.”

2. noun

a system of lenses or other optical elements used to correct vision, especially in a telescope or binoculars

“The dioptrical arrangement of the microscope allowed scientists to study the microscopic world in greater detail.”