title: Simple technique to measure toric intraocular lens alignment and stability using a smartphone.
abstract: Toric intraocular lenses (IOLs) are commonly implanted to correct corneal astigmatism at the time of cataract surgery. Their use requires preoperative calculation of the axis of implantation and postoperative measurement to determine whether the IOL has been implanted with the proper orientation. Moreover, toric IOL alignment stability over time is important for the patient and for the longitudinal evaluation of toric IOLs. We present a simple, inexpensive, and precise method to measure the toric IOL axis using a camera-enabled cellular phone (iPhone 5S) and computer software (ImageJ).
authors.affiliation: From the Department of Ophthalmology (Teichman, Baig), University of Ottawa, Ottawa, Ontario, the Department of Ophthalmology and Vision Sciences (Ahmed), University of Toronto, Toronto, Trillium Health Partners (Ahmed), and Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada.
authors.forename: Joshua C
authors.initials: JC
authors.lastname: Teichman
authors.affiliation: From the Department of Ophthalmology (Teichman, Baig), University of Ottawa, Ottawa, Ontario, the Department of Ophthalmology and Vision Sciences (Ahmed), University of Toronto, Toronto, Trillium Health Partners (Ahmed), and Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada.
authors.forename: Kashif
authors.initials: K
authors.lastname: Baig
authors.affiliation: From the Department of Ophthalmology (Teichman, Baig), University of Ottawa, Ottawa, Ontario, the Department of Ophthalmology and Vision Sciences (Ahmed), University of Toronto, Toronto, Trillium Health Partners (Ahmed), and Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada. Electronic address: ike.ahmed@utoronto.ca.
authors.forename: Iqbal Ike K
authors.initials: II
authors.lastname: Ahmed
mesh_terms: D040421:Cell Phone / Q000295:instrumentation*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007910:Lenses, Intraocular; D055095:Optics and Photonics; D010781:Photography / Q000379:methods*