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CASE REPORT
Year : 2022  |  Volume : 34  |  Issue : 3  |  Page : 357-363

Corneal Ectasia after Laser-Assisted Small-Incision Lenticule Extraction: The Case for an Enhanced Ectasia Risk Assessment


1 Eye Research Center, Department of Ophthalmology, Mashhad University of Medical Sciences, Mashhad, Iran
2 Refractive Error Research Center, Department of Optometry, Mashhad University of Medical Sciences, Mashhad, Iran
3 Instituto de Olhos Renato Ambrósio/Visare Personal Laser, and Department of Ophthalmology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil

Correspondence Address:
Samira Hassanzadeh
Refractive Error Research Center, Department of Optometry, Mashhad University of Medical Sciences, Mashhad
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/joco.joco_79_22

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Purpose: To present a case of asymmetric progressive corneal ectasia following femtosecond laser-assisted small-incision lenticule extraction. Methods: After obtaining a patient's consent, preoperative and postoperative findings were represented in this case report. Results: A 29-year-old woman presented with normal preoperative Placido disk-based corneal topography and tomographic findings. The corrected refractive error was −4.00 and −4.50 −1.00 × 177 in the right and left eye, respectively, with a maximal lenticule thickness of 87 and 115 μm OD/OS. Twenty months postoperatively, the patient presented with decreased vision in the left eye and mild ectatic changes in corneal shape in both eyes. The retrospective evaluation of the integrated rotating Scheimpflug tomography (Pentacam; Oculus, Wetzlar, Germany) and corneal biomechanical (Corvis ST) assessment revealed moderate susceptibility for corneal ectasia in the right eye and a significant corneal ectasia in the left eye. Conclusion: This case corroborates the need for an enhanced multimodal approach to characterize the risk for postoperative corneal ectasia after laser vision correction.


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