Clinical outcomes of laser in situ keratomileusis with an aberration-neutral profile centered on the corneal vertex comparing vector planning with manifest refraction planning for the treatment of myopic astigmatism

• Verfasst von: Arbelaez, Maria Clara [VerfasserIn]
• Verfasst von: Verma, Shwetabh [VerfasserIn]
• Titel: Clinical outcomes of laser in situ keratomileusis with an aberration-neutral profile centered on the corneal vertex comparing vector planning with manifest refraction planning for the treatment of myopic astigmatism
• Verf.angabe: Maria Clara Arbelaez, Noel Alpins, Shwetabh Verma, George Stamatelatos, Juan Guillermo Arbelaez, Samuel Arba-Mosquera
• E-Jahr: 2018
• Jahr: 12 January 2018
• Jahr des Originals: 2017
• Umfang: 11 S.
• Fussnoten: Available online 12 January 2018 ; Gesehen am 05.07.2018
• Titel Quelle: Enthalten in: Journal of cataract and refractive surgery
• Ort Quelle: Hagerstown, MD : Wolters Kluwer Health, 1986
• Jahr Quelle: 2017
• Band/Heft Quelle: 43(2017), 12, Seite 1504-1514
• ISSN Quelle: 1873-4502
• DOI: doi:10.1016/j.jcrs.2017.07.039
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1577317432

Abstract

PURPOSE: To evaluate clinical outcomes of laser in situ keratomileusis (LASIK) with an aberration-neutral profile centered on the estimated visual axis (considering 70% of the pupil offset toward the corneal vertex) comparing vector planning with manifest refraction planning for the treatment of myopic astigmatism. SETTING: Muscat Eye Laser Center, Muscat, Sultanate of Oman, Muscat, Oman. DESIGN: Retrospective case series. METHODS: The outcomes were evaluated at a 6-month follow-up in eyes showing ocular residual astigmatism (ORA) over 0.75 diopters (D) preoperatively. RESULTS: Eighty-five treatments were based on manifest astigmatism (preoperative sphere -2.11 D ± 1.3 [SD], cylinder -0.90 ± 1.0 D), and 79 treatments were based on vector planning (preoperative sphere -2.46 ± 1.5 D, cylinder -0.78 ± 0.79 D). At a 6-month follow-up, 128 patients (164 eyes) were evaluated and no significant differences were observed between the 2 groups in terms of difference between corrected distance visual acuity and uncorrected distance visual acuity (UDVA) (P = .1, t test and Fisher exact test Snellen lines 1 or better, P = .4) and postoperative UDVA (P = .05, t test and Fisher exact test for UDVA 20/16 or better, P = .3). Significant differences were observed between the 2 groups in terms of achieved spherical equivalent (P = .04), corneal toricity, and ORA (P < .001, t test and Fisher exact test for ORA ≤0.75 D, P < .001). CONCLUSION: Performing LASIK for myopic astigmatism with the vector planning approach resulted in comparable visual outcomes to manifest refraction planning.