Topographically Guided Two-Step LASIK and Standard LASIK in the Correction of Refractive Errors after Penetrating Keratoplasty

Spadea, Leopoldo; Saviano, Massimo; Gregorio, Angela Di; Lodovico, Domenico Di; Sanctis, Fabio De

doi:10.1177/112067210901900404

Cited by 9 publications

(4 citation statements)

References 28 publications

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“…Studies have not reported significant differences in refractive and visual outcomes between LASIK and PRK [92,93]. The precision of FS-laser flap and custom [topography or wavefront guided (WFG)] ablation has improved LASIK outcomes [51,52 & ,87 && ,94]. We reported better astigmatic outcome using the twostep procedure [45] that was also reported by others [46,51,95].…”

Section: Outcomes Of Refractive Surgery In Corneal Graftssupporting

confidence: 81%

“…The precision of FS-laser flap and custom [topography or wavefront guided (WFG)] ablation has improved LASIK outcomes [51,52 & ,87 && ,94]. We reported better astigmatic outcome using the twostep procedure [45] that was also reported by others [46,51,95]. The difficulties in LASIK include challenging preoperative evaluation, irregular corneal surface, previous AK cuts, corneal biomechanics change and inadequate stromal thickness for full HOA correction [48,52 & ,96,97].…”

Section: Outcomes Of Refractive Surgery In Corneal Graftssupporting

confidence: 65%

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Refractive surgery following corneal graft

Alió

Abdou

Abdelghany

et al. 2015

Current Opinion in Ophthalmology

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Section: Outcomes Of Refractive Surgery In Corneal Graftssupporting

confidence: 81%

Section: Outcomes Of Refractive Surgery In Corneal Graftssupporting

confidence: 65%

Refractive surgery following corneal graft

Alió

Abdou

Abdelghany

et al. 2015

Current Opinion in Ophthalmology

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“…However, no significant advantage of topography-guided LASIK over conventional LASIK has been reported. [15]…”

Section: Discussionmentioning

confidence: 99%

Laser in-situ keratomileusis for refractive error following radial keratotomy

Sinha

Sharma

Ahuja

et al. 2011

Indian J Ophthalmol

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Aim:To evaluate the safety and efficacy of laser in-situ keratomileusis (LASIK) in eyes with residual/induced refractive error following radial keratotomy (RK).Design:Retrospective study.Materials and Methods:A retrospective analysis of data of 18 eyes of 10 patients, who had undergone LASIK for refractive error following RK, was performed. All the patients had undergone RK in both eyes at least one year before LASIK. Parameters like uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), contrast sensitivity, glare acuity and corneal parameters were evaluated both preoperatively and postoperatively.Statistical Software:STATA-9.0.Results:The mean UCVA before LASIK was 0.16±0.16 which improved to 0.64 ± 0.22 (P < 0.001) after one year following LASIK. Fourteen eyes (out of 18) had UCVA of ≥ 20/30 on Snellen's acuity chart at one year following LASIK. The mean BCVA before LASIK was 0.75 ± 0.18. This improved to 0.87 ± 0.16 at one year following LASIK. The mean spherical refractive error at the time of LASIK and at one year after the procedure was –5.37 ± 4.83 diopters (D) and –0.22 ± 1.45D, respectively. Only three eyes had a residual spherical refractive error of ≥ 1.0D at one year follow-up. In two eyes, we noted opening up of the RK incisions. No eye developed epithelial in-growth till 1 year after LASIK.Conclusion:LASIK is effective in treating refractive error following RK. However, it carries the risk of flap-related complications like opening up of the previously placed RK incisions and splitting of the corneal flap.

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“…The presence of irregular anterior surfaces, often associated with large amounts of higher order aberrations, limits best spectacle-corrected visual acuity and visual quality. Among the various techniques proposed for correcting post keratoplasty astigmatism, laser-assisted in situ keratomileusis (LASIK) has been more encouraging, leading to greater reduction in preoperative astigmatism 2,3. The major disadvantages of LASIK are related to the creation of the lamellar flap.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous topography-guided PRK followed by corneal collagen cross-linking after lamellar keratoplasty for keratoconus

Spadea¹,

Paroli²

2012

OPTH

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BackgroundThe purpose of this paper is to report the results of using combined treatment of customized excimer laser-assisted photorefractive keratectomy (PRK) and prophylactic corneal collagen crosslinking (CXL) for residual refractive error in a group of patients who had previously undergone lamellar keratoplasty for keratoconus.MethodsThe study included 14 eyes from 14 patients who had originally been treated for keratoconus in one eye by excimer laser-assisted lamellar keratoplasty (ELLK), and subsequently presented with residual ametropia (−6.11 D ± 2.48, range −2.50 to −9.50). After a mean 40.1 ± 12.4 months since ELLK they underwent combined simultaneous corneal regularization treatment with topographically guided transepithelial excimer laser PRK (central corneal regularization) and corneal CXL induced by riboflavin-ultraviolet A.ResultsAfter a mean 15 ± 6.5 (range 6–24) months, all eyes gained at least one Snellen line of uncorrected distance visual acuity (range 1–10). No patient lost lines of corrected distance visual acuity, and four patients gained three lines of corrected distance visual acuity. Mean manifest refractive spherical equivalent was −0.79 ± 2.09 (range +1 to −3.0) D, and topographic keratometric astigmatism was 5.02 ± 2.93 (range 0.8–8.9) D. All the corneas remained clear (haze < 1).ConclusionThe combination of customized PRK and corneal CXL provided safe and effective results in the management of corneal regularization for refractive purposes after ELLK for keratoconus.

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Topographically Guided Two-Step LASIK and Standard LASIK in the Correction of Refractive Errors after Penetrating Keratoplasty

Abstract: After a long follow-up period, both topographically guided two-step LASIK and standard LASIK could be considered effective and safe tools in the correction of refractive errors after successful PKP for keratoconus.

Cited by 9 publications

References 28 publications

Refractive surgery following corneal graft

Refractive surgery following corneal graft

Laser in-situ keratomileusis for refractive error following radial keratotomy

Simultaneous topography-guided PRK followed by corneal collagen cross-linking after lamellar keratoplasty for keratoconus

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