Fig. 2.1 Graphic representation of vector analysis. (a) An example vector of +2.00 × 60° is depicted in power cross cylinder notation. (b) The same vector is depicted in double-angle…
Fig. 9.1 Patient with documented keratoconus of the left eye, and a cornea considered to be topographically normal by the neural network, according to calculated Klyce/Maeda indices (Placido topography by…
Fig. 8.1 For an isolated index (or a group of indices), and regardless of the cutoff value adopted, a screening method based on a cutoff value is unable to discriminate…
Study ID Intervention Comparison group Follow-up Preoperative astigmatism Study population Freitas et al. 2014 Toric IOL in both eyes (AcrySof Toric TM, Alcon, Fort Worth, TX) Non-toric IOL (AcrySof Natural,…
Fig. 11.1 Topoguided PRK for optical zone enlargement Fig. 11.2 Topoguided PRK for corneal trauma 11.2 Topography-Guided (TG) vs. Wavefront-Guided (WG) Ablation: Indications Wavefront-guided (WG) treatments aim to correct total…
Fig. 12.1 (a) Micrometer knife, (b) double fixation forceps An alternative to manual keratotomies with handheld blade has been made available in the form of a Hanna arcitome. This is…
Fig. 10.1 Against the rule simple myopic astigmatism ablation profile. The laser treatment flattens the steep meridian Fig. 10.2 Against the rule compound myopic astigmatism ablation profile. The laser treatment…
Toric IOL calculators Web site Alcon, AcrySof toric www.AcrySofToriccalculator.com Abbott Medical Optics, Tecnis www.tecnistoriciol.com/tecnis-toric-iol-calculator Bausch + Lomb, Trulign Toric IOL www.trulign.toriccalculator.com HumanOptics, Torica-aA www.iol-toric-calculator.com/CalcForm.aspx Barrett Toric Calculator www.ascrs.org/barrett-toric-calculator Table 4.2…
© Springer International Publishing AG 2018Jean-Luc Febbraro, Hamza N. Khan and Douglas D. Koch (eds.)Surgical Correction of Astigmatismhttps://doi.org/10.1007/978-3-319-56565-1_1 1. Combining Astigmatism Correction with Cataract Surgery: A Personal Crusade Robert Osher1 (1) Professor of Ophthalmology, University of Cincinnati…
© Springer International Publishing AG 2018Jean-Luc Febbraro, Hamza N. Khan and Douglas D. Koch (eds.)Surgical Correction of Astigmatismhttps://doi.org/10.1007/978-3-319-56565-1_3 3. Ten Key Points to Optimize Surgical Correction of Astigmatism Jean-Luc Febbraro1 , Douglas D. Koch2 and Hamza N. Khan3 (1) Rothschild Foundation, Paris,…
