public ActionResult <SpectacleMagnificationModel> SpectacleMagnification(SpectacleMagnificationModel magnification)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            magnification.Result = Magnification.SpectacleMagnification(magnification.FrontBaseCurve, magnification.ActualLensPower, magnification.Index, magnification.Thickness, magnification.VertexDistance);
            return(magnification);
        }