axis
Part of the correction for astigmatism that measures the orientation fo the correction.
Declaration
@NSCopying var axis: HKQuantity? { get }Discussion
This quantity measures the orientation of the correction in degreeAngle() units.
Part of the correction for astigmatism that measures the orientation fo the correction.
@NSCopying var axis: HKQuantity? { get }This quantity measures the orientation of the correction in degreeAngle() units.