PURPOSE: To evaluate the safety and efficacy of intrastromal corneal ring segments (ICRS) implantation followed by same-day topography-guided photorefractive keratectomy (PRK) and ultraviolet-A/riboflavin collagen cross-linking (CXL) in patients with low to moderate keratoconus. METHODS: Patients with low to moderate keratoconus and contact lens intolerance were included in the study. All patients first underwent femtosecond laser-enabled placement of ICRS (Keraring, Mediphacos) (first step). Same-day topography-guided PRK and CXL (second step) were subsequently performed in all patients after the refraction was stable (average 6 months [range: 3 to 11 months]). RESULTS: Thirteen eyes from 13 patients were included in the study. Based on values before the first step and 6 months after the second step, significant improvements were noted in uncorrected distance visual acuity (0.7±0.32 logMAR vs 0.08±0.08 logMAR), corrected distance visual acuity (CDVA) (0.16±0.19 logMAR vs 0.02±0.04 log-MAR), sphere (-3.65±3.08 diopters [D] vs 0.06±1.6 D), astigmatism (-3.31±1.5 D vs -0.98±0.75 D), average K (47.28±1.99 D vs 41.42±3.22 D), and coma (2.36±1.23 μm vs 1.47±0.68 μm) (P<.05). Approximately 63% of eyes gained ⩾2 lines of CDVA, whereas no change in CDVA was reported in ∼27% of eyes. No eyes lost lines of CDVA. CONCLUSIONS: The combination of ICRS implantation followed by sequential same-day topography-guided PRK/CXL may be a reasonable option for improving visual acuity in patients with low to moderate keratoconus. Copyright 2013, SLACK Incorporated.
PURPOSE: To evaluate the safety and efficacy of intrastromal corneal ring segments (ICRS) implantation followed by same-day topography-guided photorefractive keratectomy (PRK) and ultraviolet-A/riboflavin collagen cross-linking (CXL) in patients with low to moderate keratoconus. METHODS:Patients with low to moderate keratoconus and contact lens intolerance were included in the study. All patients first underwent femtosecond laser-enabled placement of ICRS (Keraring, Mediphacos) (first step). Same-day topography-guided PRK and CXL (second step) were subsequently performed in all patients after the refraction was stable (average 6 months [range: 3 to 11 months]). RESULTS: Thirteen eyes from 13 patients were included in the study. Based on values before the first step and 6 months after the second step, significant improvements were noted in uncorrected distance visual acuity (0.7±0.32 logMAR vs 0.08±0.08 logMAR), corrected distance visual acuity (CDVA) (0.16±0.19 logMAR vs 0.02±0.04 log-MAR), sphere (-3.65±3.08 diopters [D] vs 0.06±1.6 D), astigmatism (-3.31±1.5 D vs -0.98±0.75 D), average K (47.28±1.99 D vs 41.42±3.22 D), and coma (2.36±1.23 μm vs 1.47±0.68 μm) (P<.05). Approximately 63% of eyes gained ⩾2 lines of CDVA, whereas no change in CDVA was reported in ∼27% of eyes. No eyes lost lines of CDVA. CONCLUSIONS: The combination of ICRS implantation followed by sequential same-day topography-guided PRK/CXL may be a reasonable option for improving visual acuity in patients with low to moderate keratoconus. Copyright 2013, SLACK Incorporated.
Authors: L Fernández-Vega-Cueto; V Romano; R Zaldivar; C H Gordillo; F Aiello; D Madrid-Costa; J F Alfonso Journal: J Ophthalmol Date: 2017-12-18 Impact factor: 1.909
Authors: Hun Lee; David Sung Yong Kang; Byoung Jin Ha; Jin Young Choi; Eung Kweon Kim; Kyoung Yul Seo; Tae-Im Kim Journal: BMC Ophthalmol Date: 2017-12-29 Impact factor: 2.209
Authors: Il Hwan Koh; Kyoung Yul Seo; Seong Bae Park; Hun Yang; InSik Kim; Jin Sun Kim; David G Hwang; Sang Min Nam Journal: Biomed Res Int Date: 2019-07-08 Impact factor: 3.411