Resultados a curto prazo de ceratotomia lamelar pediculada (LASIK) para correção de hipermetropia com o sistema Ladar Vision de excimer laser

Nunes, Larissa Madeira; Francesconi, Claudia; Campos, Mauro; Schor, Paulo

doi:10.1590/s0004-27492004000100010

Cited by 1 publication

(1 citation statement)

References 11 publications

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“…The literature reports refractive stabilisation 90 days after refractive surgery (7,12,13,14) . In our study, the minimum follow-up period was 90 days and the maximum was 402 days (median, 142 days) with no observed regression, even in cases of hyperopia.…”

Section: Discussionmentioning

confidence: 99%

Fluência do laser e tempo de parada cirúrgica, por perda de fixação, como fatores relacionados à precisão refracional

Lucena¹,

Andrade

Lucena³

et al. 2013

Rev. bras.oftalmol.

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Objective: To evaluate the correlation of flow and stopping time intraoperative loss of attachment factors as hypertension or hipocorreções of refractive errors after Lasik. Methods:The age ranged between 19 and 61 years (mean= 31.27 ± 9.99 (mean= 0.23 ± 0.69) and postoperative uncorrected 0.40-0 (x= 0.30 ± 0, 68). (mean= 0.545 ± 0.01), p = 0.762) between the flow and spherical equivalent (mean = -0.04 ± 0.38) in eyes operated. The minimal downtime during surgery was 02 seconds and maximum was 12 seconds (mean= 4.90 ± 3.47). Making a correlation (r = 0.08865, p = 0.411) p=0,424). No equivalente esférico pré e pós-operatório, notou-se uma óbvia diferença (p< 0,0001), no pré-operatório com média de -4,09 ± 2,83 e o pós com média de -0,04 ± 0,38. A mediana foi de -4,75 no pré e de 0 no pós-operatório. Sessenta e nove casos (78,3%) ficaram plano ± 0,25. A fluência mínima foi de 0,513 mJ/cm 2 e a máxima de 0,581 mJ/cm 2 com média de 0,545 ± 0,01, não se percebendo correlação (r= -0,03266; IC 95% -0,241 a 0,178; p= 0,762) entre a fluência e o equivalente esférico final (média= -0,04 ± 0,38) nos olhos operados. O tempo mínimo de parada transoperatória foi de dois segundos e o máximo de 12 segundos com média de 4,90 ± 3,47. Fazendo-se uma correlação (r= 0,08865; IC 95%= -0,123 a 0,293; p= 0,411) entre o equivalente esférico pós-operatório e o tempo de parada transoperatória, não se percebeu diferenças. Conclusão: Não houve correlação entre a fluência do laser e o tempo de parada transoperatória por perda de fixação, com hiper ou hipocorreções nas ametropias pós-Lasik. The Median= 0 logMAR for both time points (p= 0.424). For spherical equivalent before and after surgery, we found an obvious difference, with the pre (mean= -4.09 ± 2.83) and post (mean= -0.04 ± 0.38). The Median was -4.75 in the pre and zero postoperatively (p <0.0001). Sixty-nine cases (78.3%) were plan ± 0.25. Fluency minimum= 0.513 mJ/cm2 and maximum= 0.581 mJ/cm2Descritores (1) . Pallikaris was the first to promote the removal of corneal stromal tissue with excimer laser to correct refractive errors (2) . The use of excimer laser to correct myopia, hyperopia and astigmatism evolved in recent years, mainly due to the technological advancement of devices.Laser-assisted in situ keratomileusis (LASIK) is still the most widely used technique; it is a painless, safe, and accurate method for treating refractive errors with quick recovery (3)(4)(5) . By preserving epithelial integrity in the central region of the cornea, it promotes a milder wound healing reaction. The healing response triggered by the laser and the creation of a flap are important to the safety and efficacy of the procedure. However, it is a significantly complex event (6) . The literature reports great refractive stability from the 3 rd month after surgery (7)(8)(9) . However, do intraoperative factors such as daily variations in laser fluence and interruptions during laser application due to loss of fixation influence the refractive outcome?The aim of this study was to ev...

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Section: Discussionmentioning

confidence: 99%