Memorial Eye Center (T.P.A.), Sugar Land, TX; and Contact Lens and Visual Optics Laboratory (S.J.V.), School of Optometry and Vision Science, Centre for Vision and Eye Research, Queensland University of Technology, Brisbane, Australia.

Address correspondence to Stephen J. Vincent, Ph.D., F.A.A.O., F.S.L.S., Contact Lens and Visual Optics Laboratory, School of Optometry and Vision Science, Centre for Vision and Eye Research, Queensland University of Technology, Brisbane, Australia 4059; e-mail: [email protected]

The authors have no funding or conflicts of interest to disclose.