ArticleClinical ophthalmology (Auckland, N.Z.)2020
Predictions of Residual Astigmatism from Surgical Planning for Topographic-Guided LASIK Based on Anterior Corneal Astigmatism (LYRA Protocol) vs the Phorcides Analytic Engine.
Article in Clinical ophthalmology (Auckland, N.Z.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Topography-Guided LASIK: A Prospective Study Evaluating Patient-Reported Outcomes.Clinical ophthalmology (Auckland, N.Z.) · 2023Trial
- Outcomes of higher-order aberration correction in relation to optical zone size after Phorcides-planned laser in situ keratomileusis in Indian Eyes.Indian journal of ophthalmology · 2026Article
- Application of Surgical Protocols for the Treatment of Highly Irregular Astigmatism with Topographic Guided Ablation in a Case of Post-LASIK Ectasia.International medical case reports journal · 2025Article
- Clinical outcomes after topography-guided FS-LASIK for myopia with nonastigmatic eyes.BMC ophthalmology · 2024Article
- Comparative analysis of the clinical outcomes between wavefront-guided and conventional femtosecond LASIK in myopia and myopia astigmatism.International journal of ophthalmology · 2021Article
- Clinical Outcomes After Topography-guided Refractive Surgery in Eyes with Myopia and Astigmatism-Comparing Results with New Planning Software to Those Obtained Using the Manifest Refraction [Letter].Clinical ophthalmology (Auckland, N.Z.) · 2021Article
- Clinical Outcomes After Topography-Guided Refractive Surgery in Eyes with Myopia and Astigmatism - Comparing Results with New Planning Software to Those Obtained Using the Manifest Refraction [Response To Letter].Clinical ophthalmology (Auckland, N.Z.) · 2021Article
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1 author.
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Abstract
purposeTo identify the laser programming strategy that achieves the highest refractive astigmatism outcomes accuracy between LYRA surgical planning and Phorcides surgical planning.
methodsOne hundred one eyes successfully treated with Contoura with LYRA Protocol were retrospectively surgically planned with Phorcides to determine its accuracy. Eighteen eyes that had inaccurate 3 month outcomes with LYRA were also retrospectively planned with Phorcides. Two patients with one eye treated with LYRA and one with Phorcides surgical planning were analyzed for outcomes.
resultsRetrospective Phorcides surgical planning deviated from already successful treatments with LYRA Protocol 51% of the time, with an average astigmatic deviation of 0.69 diopters (D) and an average deviation of 7.1 degrees. The percentage of eyes of the 101 successfully treated with LYRA Protocol then planned with Phorcides differed by 0.5D in 19.8%, by 0.75D in 23.8%, and by 1D in 7.9%. A retrospective analysis with Phorcides of patients treated with LYRA Protocol with residual post-operative astigmatism demonstrated that Phorcides would have increased accuracy in only 33% of patients, and not helped or decreased accuracy in the rest.
conclusionPhorcides was significantly less accurate in surgical planning than the LYRA Protocol overall and a 51% of primary patients could have a likelihood of significant residual astigmatism. Phorcides would also have provided a less accurate outcome in the majority of patients that needed secondary enhancement.
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