Abstract: Various embodiments of an apparatus for measuring a characteristic parameter of an optical fiber are provided. In one embodiment, an apparatus for testing an optical fiber comprises: a light source enclosed within a housing and configured to couple to a first end of the optical fiber; a detector enclosed within the housing and configured to couple to a second end of the optical fiber; and a non-planar table defining a curved path, the non-planar table attached to the housing and configured to guide the optical fiber along the curved path in three dimensions. In this way, an optical fiber may be deployed for testing with minimal manual manipulation of the optical fiber.

Abstract: A method for calculating the required cylindrical power of a toric implant by using both the measured pre-operative corneal/ocular astigmatism and the predicted surgically-induced astigmatism. The post-operative corneal/ocular astigmatism is predicted using power vector analysis of the surgical technique employed by the surgeon. Such a method provides a more accurate method of calculating the required spherocylindrical refractive power of the implant. The method can be implemented manually, but preferably is automated by implementation on a computer through appropriate software.