Item description from the seller

90D Pink Double Aspheric Lens Ophthalmic Lens with Wooden Case

Double aspheric glass optics provide Clear imaging.

High magnification provides excellent views of the optic.
Perfectly corrected for field curvature, astigmatism, aberrations and coma.
Specification:-
Lens = 90D
Field of View = 50 Degree
Mag Image = 2.97x
Aperture = 48mm
Working Distance = 47mm