Visual and pachymetric characteristics in myopic patients corrected by transepithelial photorefractive keratectomy with Microscan Visum
Keywords:
Laser surgery, transepithelial photorefractive keratectomy, myopic ametropiasAbstract
Objective: To describe the visual and pachymetric characteristics in patients with myopic ametropia treated by transepithelial photorefractive keratectomy with Microscan Visum.
Methods: Pre-experimental before and after study in 68 eyes of 37 patients with myopic ametropia.
Results: Compound myopic astigmatism (86.8%) and moderate myopia (55.9%) predominated. Depending on the severity of myopia, there was a significant increase (p <0.001) in SCVA at three months after surgery, when compared with preoperative uncorrected visual acuity. The mean visual acuity with correction in the postoperative period remained unchanged compared to the preoperative period (1.00). In mild myopia, a spherical equivalent of 0.00 Diopters was obtained and the values in moderate and severe myopia were similar to it. The preoperative pachymetry means in the thinnest zone did not differ significantly between patients with mild, moderate or severe myopia (p=0.057; p=0.059 and p=0.000 respectively). The difference in actual ablated microns was significantly different when comparing the valuesof patients with different severities of myopia, with increases proportional to the magnitude of myopia.
Conclusions: Transepithelial photorefractive keratectomy is a treatment option for myopic ametropias with satisfactory results in terms of improvement of visual acuity without and with correction, with pachymetric values within the expected ranges and few complications.
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1. Rudnicka AR, Kapetanakis VV, Wathern AK, Logan NS, Gilmartin B, Whincup PH, et al. Global variations and time trends in the prevalence of childhood myopia, a systematic review and quantitative meta-analysis: implications for aetiology and early prevention. Br J Ophthalmol. 2016;100(7):882-890. DOI: 10.1136/bjophthalmol-2015-307724
2. Holden BA, Fricke TR, Wilson DA, Jong M, Naidoo KS, Sankaridurg P, et al. Global Prevalence of Myopia and High Myopia and Temporal Trends from 2000 through 2050. Ophthalmology. 2016;123(5):1036-42. DOI: 10.1016/j.ophtha.2016.01.006
3. Wildsoet CF, Chia A, Cho P, Guggenheim JA, Polling JR, Read S, et al. IMI-Interventions Myopia Institute: interventions for controlling myopia onset and progression report. Investig Ophthalmol Vis Sci. 2019;60:M106–M131. DOI: 10.1167/iovs.18-25958
4. Li SM, Zhan S, Li SY, Peng XX, Hu J, Law HA, et al. Laser-assisted subepithelial keratectomay (LASEK) versus photorefractive keratectomy (PRK) for correction of myopia. Cochrane Database of Systematic Reviews. 2016;(2):1-52. DOI: 10.1002/14651858.CD009799.pub2
5. Sugar A, Rapuano CJ, Culbertson WW, Huang D, Varley GA, Agapitos PJ, et al. Laser in situ keratomileusis for myopia and astigmatism: safety and efficacy: a report by the American Academy of Ophthalmology. Ophthalmology. 2002;109:175–87. DOI: 10.1016/s0161-6420(01)00966-6
6. Miotto-Montesinos G, Rojas-Alvarez E, Torres-Piedra D, Torres-Palacio N. PRK convencional versus trans-PRK de un solo paso en cirugía refractiva corneal con excímer láser. Rev mex. oftalmol. 2021 [acceso 20/10/2024];94(5):204-12. Disponible en: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2604-12272020000500204&lng=es
7. Pertiwi ANS, Mahayana IT, Supartoto A, Goenawan W, Suhardjo. Transepithelial photorefractive keratectomy for myopia: effect of age and keratometric values. Int J Ophthalmol. 2021;14(5):744-749. DOI: 10.18240/ijo.2021.05.16.
8. Curcă PF, Tătaru CI, Sima G, Burcea M, Tătaru CP. Advances in Transepithelial Photorefractive Keratectomy versus Laser-Assisted In Situ Keratomileusis. Diagnostics (Basel, Switzerland). 2024;14(5),481. DOI: 10.3390/diagnostics14050481
9. de Ortueta D, von Rüden D, Verma S, Magnago T, Arba-Mosquera S. Queratectomía fotorrefractiva transepitelial en astigmatismo moderado a alto con un perfil de ablación neutro de aberración no guiado por frente de onda. J Refract Surg. 2018;34(7):466–474. DOI: 10.3928/1081597X-20180402-04
10. de Ortueta D, Von Ruden D, Arba-Mosquera S. Comparison of Refractive and visual outcomes after transepithelial Photorefractive Keratectomy (TransPRK) in Low versus Moderate Myopia. 2021;8(7):262. DOI: 10.3390/photonics8070262
11. Sun L, Jhanji V, Li S, Li J, Ji R, Zeng H, et al. Vector analysis of astigmatic correction after single-step transepithelial photorefractive keratectomy and femtosecond-assisted laser in-situ keratomileusis for low to moderate myopic astigmatism. Indian J Ophthalmol. 2022;70(10):3483-3489. DOI: 10.4103/ijo.IJO_649_22
12. Xi L, Zhag C, He Y. Single-step Transepithelial photorefractive keratectomy in the treatment of mild, moderate, and high myopia: six month results. BMC Ophthalmol. 2019;28,18:209. DOI: 10.1186/s12886-018-0888-x
13. Lin DTC, Holland SP, Verma S, Hogden J, Arba-Mosquera S. Immediate and short term visual recovery after SmartSurfACEphotorefractive keratectomy. J Optom. 2019;12(4):240-247. DOI: 10.1016/j.optom.2019.04.003
14. de Ortueta D, von Rüden D, Arba-Mosquera S. Refractive effect of epithelial remodelling in myopia after transepithelial photorefractive keratectomy. Vision (Basel). 2022;6(4):74. DOI: 10.3390/vision6040074
15. Adib-Mighaddam S, Soleyman-Jadi A, Adili-Aghdam F, Arba Mosquera S. Single-step transepithelial photorefractive keratectomy in high myopia: qualitative and quantitative visual functions.Int J Ophthalmol. 2017;10(3):445-52. DOI: 10,18240/ijo.2017.03.10
16. Giral BJ, Bloch F, Sot M, Zevering Y, El Nar A, Vermion JC, et al. Efficacy and safety of single-step transepithelial photorefractive keratectomy with the all-surface laser ablation SCHWIND platform withour mitomycin-C for high myopia: A retrospective study of 69 eyes. PLos One. 2021;16(12):e0259993. DOI: 10.1371/journal.pone.0259993
17. https://microscan.ru/wp-content/uploads/2021/03/microscan-eng-final.pdf
. Excimer laser for refractive and therapeutic eye surgery; Russia: optosystem; [s.f.] [acceso 20/10/2024] Disponible en: https://microscan.ru/wp-content/uploads/2021/03/microscan-eng-final.pdf
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