Navegando por Palavras-chave "Keratomileusis, laser in situ"

Agora exibindo 1 - 16 de 16
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Análise laboratorial das ceratites infecciosas secundárias à cirurgia refrativa
    (Conselho Brasileiro de Oftalmologia, 2005-06-01) Leal, Fernando [UNIFESP]; Hofling-Lima, Ana Luisa [UNIFESP]; Freitas, Denise de [UNIFESP]; Campos, Mauro Silveira de Queiroz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To describe the laboratory findings in patients with infectious keratitis, who underwent refractive surgery, correlating the surgical procedure and the time of infection manifestation, and the results of culture and smears. METHODS: The previous samples were obtained from patients submitted to radial keratotomy (RK), photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) at the Ophthalmology Department of UNIFESP. The infections were classified as early, when they occurred up to 30 days after the surgery, and late when diagnosed after 30 days. RESULTS: In 93 samples, 39 (42%) came from patients submitted to radial keratotomy, 14 (36%) being early infections and 25 (64%) late; 38 (41%) of LASIK, 21 (55%) being early and 17 (45%) late; 16 (17%) of photorefractive keratectomy, 10 (62.5%) being early and 6 (37.5%) late. Eighty-six samples were submitted to culture and smears for bacteria, 43 cultures (50%) and 43 smears (50%) were positive. Seventy-two samples were submitted to culture and smears for fungi, 2 cultures (3%) and 4 smears (6%) were positive. CONCLUSION: The agreement between culture and smear results was 80.2%; regarding the type of surgery there was no statistically significant relationship between time of onset of infection and surgery.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Aplicação de fórmula corretiva nas alterações da pressão intraocular dos pacientes submetidos a LASIK
    (Conselho Brasileiro de Oftalmologia, 2011-04-01) Silva, Thiago George Cabral; Polido, Júlia Gomes Fernandes; Pinheiro, Maurício Vieira; Silva, André Luís De Freitas; Goldbach, Laerte; Mascaro, Vera Lúcia Degaspare Monte [UNIFESP]; Serracarbassa, Pedro Durães; Araújo, Maria Emília Xavier Dos Santos [UNIFESP]; Hospital do Servidor Público Estadual de São Paulo; Hospital do Servidor Público Estadual de São Paulo - HSPE; Universidade Federal de São Paulo (UNIFESP); Universidade de São Paulo (USP)
    PURPOSE: To compare the intraocular pressure (IOP) pre and post LASIK, correlating it to changes in central corneal thickness (CCT) and average simulated keratometry (K), as well as verifying the results of a corrective formula previously proposed. METHODS: Longitudinal prospective study conducted in outpatients that underwent to LASIK. Patients underwent complete ophthalmic examination, previously and 2 months after the surgery. Intraocular pressure was evaluated with Goldmann applanation tonometer between 9 am and 11 am, average simulated keratometry was evaluated using corneal topography and central corneal thickness was measured with ultrasound pachymetry, been considered the average of three measurements. Two patients were excluded due to surgery or eye disease, and previous use of topical steroids over the past three months. The surgeries were performed according to standard procedures. The formula [real IOP = IOP measured + (540 - ECC)/71 + (43 - K)/2.7 + 0.75 mmHg] proposed for correcting intraocular pressure was used. RESULTS: Fifteen eyes of eight patients were evaluated, age ranged from 24 to 46 years (mean: 31.37 ± 7.27). There was a statistically significant difference between the measurements of intraocular pressure, central corneal thickness and average simulated keratometry pre and post-LASIK. (p=0.0001). It was observed that each 1D corrected underestimated the IOP 1.06 ± 0.59 mmHg (0.11 a 1.89 mmHg). The use of the corrective formula lead to 80% of eyes within 2.50 mmHg of preoperative intraocular pressure. Although, the two sets of data are statistically different (p=0.0266). CONCLUSIONS: Post LASIK eyes presented lower intraocular pressure than preoperatively. Intraocular pressure was moderately correlated to central corneal thickness and weakly correlated to average simulated keratometry. With the use of the corrective formula, we were able to determine that 80% were within 2.50 mmHg of the preoperative intraocular pressure.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Avaliação da qualidade de corte do microcerátomo Masyk® na confecção de lamela corneana pediculada em olhos humanos de Banco de Olhos
    (Conselho Brasileiro de Oftalmologia, 2006-08-01) Victor, Gustavo; Alves, Milton Ruiz; Nosé, Walton [UNIFESP]; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP); Universidade Metropolitana de Santos Departamento de Oftalmologia
    PURPOSE: To evaluate the cut quality of Masyk® microkeratome in obtaining a corneal flap from human eyes of Eye Banks. METHODS: Prospective study with 20 human eyes from Eye Banks. All flaps were programmed to obtain 160 µm thickness and 9.5 mm diameter. The thicknesses were calculated with P55 pachymeter (Paradigm, USA), and diameter with compass. RESULTS: No complications were observed during the use of the microkeratome. The central corneal thickness average was 160.34±5.10 µm and range from 149 to 181 µm. The vertical diameter average was 9.64±0.16 mm and range from 9.30 to 9.85 mm. CONCLUSION: Masyk® microkeratome showed to be effective for obtention of corneal flap with appropriate thickness and diameter from human corneas of Eye Banks.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Avaliação da qualidade de corte do microceratótomo Masyk® na confecção de lamela corneana pediculada em olhos porcinos
    (Conselho Brasileiro de Oftalmologia, 2006-02-01) Victor, Gustavo; Alves, Milton Ruiz; Nosé, Walton [UNIFESP]; Eye Clinic Day Hospital; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP); Universidade Metropolitana de Santos
    PURPOSE: Evaluation of the cut quality of the Masyk® microkeratome in obtaining corneal flap from porcine eyes. METHODS: Prospective study with 31 porcine eyes divided into two groups: 15 eyes with programmed flap thickness of 160 µm and 9.5 mm diameter (Group 1), and 16 eyes with programmed flap thickness of 140 µm and 8.5 mm diameter (Group 2). Corneal thickness was calculated with a P55 pachymeter (Paradigm, USA) and the diameter with compass. RESULTS: No complications were observed during the use of the microkeratome. In group 1, the central corneal thickness mean was 146.33 ± 15.43 µm, range between 127 and 186 µm, and the vertical diameter mean was 9.39 ± 0.26 mm, range from 8.90 to 9.85 mm. In group 2, the central corneal thickness mean was 128.75 ± 18.83 µm, range from 71 to 178 µm, and the vertical diameter mean was 8.27 ± 0.20 mm, range from 7.95 to 8.65 mm. CONCLUSION: The Masyk® microkeratome showed to be effective and safe to produce corneal flaps with appropriate thickness and diameter in porcine eyes.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Avaliação de lâminas cirúrgicas reutilizadas no LASIK pela microscopia eletrônica de varredura
    (Conselho Brasileiro de Oftalmologia, 2006-12-01) Soares, Francisco Seixas; Casanova, Fabio Henrique [UNIFESP]; Campos, Mauro Silveira de Queiroz [UNIFESP]; Nishiwaki-Dantas, Maria Cristina [UNIFESP]; Dantas, Paulo Elias Correa; Santa Casa de Misericórdia de São Paulo Departamento de Oftalmologia; Universidade Federal de São Paulo (UNIFESP); Universidade de São Paulo (USP)
    PURPOSE: To evaluate and compare, by scanning electron microscopy (SEM), the sharpness of the edge of brand new surgical blades and consecutively used surgical blades in laser-assisted in situ keratomileusis (LASIK). METHODS: Tewnty-five AccuGlide® (Bausch & Lomb, USA) surgical blades were evaluated, divided in to 3 groups: Group 1 (control), non-used surgical blades; Group 2, ten surgical blades used twice (simultaneous bilateral procedure); Group 3, ten surgical blades used four times (two consecutive simultaneous bilateral procedures). Each blade was analyzed by SEM at four random points, two central and two peripheral points, with magnification of 50x, 350x, and 1,000x. RESULTS: Blade body irregularities and organic material were observed on all used surgical blades (Groups 2 and 3), but not on new surgical blades (Group 1). In addition, Group 3 revealed more irregularities in both central (p=0.0094) and peripheral points (p=0.0098) than Group 2, as well as organic material deposition (p=0.0204 and p=0.0909, respectively). Neither metalic material nor irregularities in the cutting edge of the blade were observed in any group. CONCLUSION: No difference regarding the cutting edge was observed between new and blades reused up to four times, however irregularities and organic material were observed in all reused blades. Reusing blades for LASIK may produce structural changes and its clinical implications need to be evaluated due to the possible relation with interlamellar postoperative complications.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Clinical evaluation of reprocessed blades in LASIK
    (Conselho Brasileiro de Oftalmologia, 2008-04-01) Mallmann, Felipe [UNIFESP]; Murata, Celina [UNIFESP]; Yamazaki, Ester Sakae [UNIFESP]; Campos, Mauro Silveira de Queiroz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To evaluate outcome and complications in LASIK with reprocessed blades. METHODS: Retrospective analysis of patients' charts submitted to complete custom LASIK from January 2004 to June 2005. Inclusion criteria comprised surgical description of blade use and minimum follow-up of 1 month. The blade was reprocessed following a clinic protocol, from 1 to 3 times (reprocessed group) and results compared with patients that underwent LASIK with first-use blades (first-use group). RESULTS: Two hundred fifty-one eyes of 135 patients were analyzed (spherical equivalent of -3.69 (D). There was no statistical differences between first-use group and reprocessed blade group regarding intraoperative (5.5% vs 8.8%), early (50.5% vs 49.5%) and late complications (33% vs 27.5%), respectively. Uncorrected visual acuity > 20/20 (68.1% vs 66.9%), aberrometry analysis (total RMS: 0.62 vs 0.64 µm) and safety (85.7% vs 83.1%) were similar between groups (p>0.05). CONCLUSION: Reprocessed blades following rigid sterilization protocol may have similar outcomes and complications rates in LASIK surgery compared to first-use blades.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Coleção fluídica na interface do LASIK causada por glaucoma secundário à ceratouveíte herpética: relato de caso
    (Conselho Brasileiro de Oftalmologia, 2007-02-01) Nakano, Eliane Mayumi [UNIFESP]; Kuchembuck, Márcio; Nakano, Kozo; Oliveira, Marivaldo; Alvarenga, Lenio Souza [UNIFESP]; Portellinha, Waldir; Hospital Santa Cruz; Universidade Federal de São Paulo (UNIFESP); Universidade da Califórnia
    Herpes simplex virus infection is a frequent cause of intraocular inflammation or anterior uveitis. Ocular hypertension is a common feature in herpetic keratouveitis. We describe a fluid accumulation and flap displacement in late postoperative period (28 months) of LASIK associated with ocular hypertension caused by herpetic keratouveitis. This finding supports the theory that flap attachment after LASIK is only partial and the virtual space remains indefinitely. The presence of ocular hypertension may lead to corneal edema and fluid accumulation in the interface.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Correção das aberrações oculares nos retratamentos de LASIK personalizado e convencional
    (Conselho Brasileiro de Oftalmologia, 2009-10-01) Urbano, Andréia Peltier [UNIFESP]; Nosé, Walton [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade Metropolitana de Santos Departamento de Oftalmologia
    PURPOSE: To compare the correction of ocular aberrations between custom and standard LASIK retreatment. METHODS: Prospective, randomized trial with paired eye control of 74 eyes from 37 patients who underwent LASIK retreatment. Each patient underwent retreatment using Zyoptix LASIK (Bausch & Lomb) in 1 eye and Planoscan LASIK (Bausch & Lomb) in the fellow eye. Correction of ocular aberrations was compared between custom and standard LASIK retreatments. RESULTS: At 6 months, there was a statistically significant reduction in defocus, astigmatism, coma, spherical aberration, second, third, higher-order and total aberration in Zyoptix eyes. There was a statistically significant reduction in defocus, second-order and total aberration in Planoscan eyes. CONCLUSIONS: Custom retreatment was statistically superior than standard retreatment for correction of lower and higher ocular aberrations.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Estudo comparativo entre duas plataformas para realização de Lasik personalizado para correção de miopia e astigmatismo: Alcon CustomCornea® versus Bausch & Lomb Zyoptix®
    (Conselho Brasileiro de Oftalmologia, 2009-08-01) Barreiro, Telma Pereira; Forseto, Adriana dos Santos [UNIFESP]; Pinto, Lucila Ferreira Leite; Francesconi, Claudia Maria; Nosé, Walton [UNIFESP]; Eye Clinic; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To compare the visual and clinical outcomes of Wavefront-guided laser in situ keratomileusis (Lasik) with Alcon CustomCornea® and Zyoptix® systems. METHODS: A prospective, randomized, masked and bilateral study was conducted. Fifty patients with preoperative spherical equivalent ranging from -1.00 to -6.50 D were enrolled for customized ablation in both eyes. All of them were submitted to Lasik CustomCornea® treatment in one eye and Zyoptix® in the other eye. Uncorrected visual acuity, best correct visual acuity (BCVA), manifest refraction, wavefront measurements, and contrast sensitivity testing were performed preoperatively and postoperatively at 1, 3 and 6 months. RESULTS: Preoperatively manifest refractive spherical equivalent was -3.29 ± 1.56 D in the CustomCornea® group and -3.22 ± 1.50 D in the Zyoptix® group. At 6 months, 86% of CustomCornea® eyes and 70% of Zyoptix® eyes had UCVA > 20/20. One hundred percent of the CustomCornea® group and 88% of the eyes in the Zyoptix® were within 0.50 D of emmetropia. In both groups, the contrast sensitivity improved. Spherical aberration increased in both groups, with the CustomCornea® group showing lower levels (p<0,001). CONCLUSION: There were no differences between the systems according to safety and effectiveness. The Zyoptix® platform showed greater spherical aberration.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    O impacto da cirurgia de ceratectomia fotorrefrativa (PRK) e ceratomileuse assistida por excimer laser in situ (LASIK) na qualidade visual e de vida em pacientes com ametropias
    (Conselho Brasileiro de Oftalmologia, 2008-02-01) Belfort, Ricardo [UNIFESP]; Campos, Mauro Silveira de Queiroz [UNIFESP]; Hoexter, Marcelo Queiroz [UNIFESP]; Belfort, Rubens Junior [UNIFESP]; Mari, Jair de Jesus [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To evaluate the quality of life, vision and stress before and after refractive surgery. METHODS: This is a longitudinal, observational study, where 100 patients were evaluated; 54 espectacles wearers, 21 contact lens users before surgery and 25 controls wearers spectacles or contact lenses, who did not want to undergo refractive surgery during one year despite refractive error. The applied questionnaires were Self Reporting Questionnaires SRQ-20 of quality of life and vision and National Eye Institute Visual Function Questionnaire NEI VFQ-25 for the assessment of mental health. The intervention group answered the questionnaires before surgery, three, six and twelve months after follow-up and the control group answered the questionnaires at six and twelve months after the baseline. The questionnaires of the intervention group were applied by an independent person. RESULTS: In the intervention group (54 spectacle wearers), 39 were treated by photorefractive excimer laserkeratectomy (PRK) and 15 by laser in situ keratomileusis (LASIK), of the 21 contact lens users: 12 received photorefractive excimer laser keratectomy and nine were treated by laser in situ keratomileusis (LASIK). The control group remained stable during the study. After three months of follow-up the intervention group showed improvement in quality of life, vision and reduction of stress. After one year of follow-up the assessments of quality of life and mental health were similar to the control group. After three months there was a significant reduction of psychiatric symptomatology in the intervention group. CONCLUSION: Patients operated for correction of ametropia showed a significant improvement in quality of life and mental health assessments.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Intrastromal crosslinking in post-LASIK ectasia
    (Conselho Brasileiro de Oftalmologia, 2014-06-01) Moscovici, Bernardo Kaplan [UNIFESP]; Campos, Mauro Silveira de Queiroz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Descrevemos um caso de ectasia de córnea precoce após cirurgia de LASIK, detectado no primeiro semestre pós-operatório. Nós optamos tratar este paciente com crosslinking embaixo do flap , sem desepitelização com bons resultados. A paciente permaneceu sem progressão da ectasia até o momento atual, dois anos após o procedimento.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Keratoconus and corneal stability after radial keratectomy in the fellow eye: case report
    (Conselho Brasileiro de Oftalmologia, 2013-06-01) Sousa, Jacqueline Martins de [UNIFESP]; Hirai, Flávio Eduardo [UNIFESP]; Sato, Elcio Hideo [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Keratoconus has usually been described as bilateral but asymmetric disease. Corneal ectasia is one of the long-term complications of modern refractive surgery, especially those submitted to laser in situ keratomileusis (LASIK). We describe a patient with keratoconus in the right eye that was submitted to radial keratectomy (RK) in the left eye 19 years ago with no progression of the ectatic cornea and no complications related to the refractive surgery. Because unilateral keratoconus is rare, we believe that RK was performed on an already ectatic cornea (not clinically detected) or with fruste keratoconus. However, neither corneal ectasia progressed, nor ectasia was induced by RK in the fellow eye.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Qualidade visual após retratamento de LASIK personalizado versus convencional
    (Conselho Brasileiro de Oftalmologia, 2008-12-01) Urbano, Andréia Peltier; Nosé, Walton [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade Metropolitana de Santos Departamento de Oftalmologia
    PURPOSE: To evaluate visual quality after wavefront-guided LASIK versus standard LASIK in retreatment of primary LASIK for myopia and myopic astigmatism. METHODS: A prospective study was performed with paired eye control of 74 eyes with LASIK retreatment. Each patient underwent retreatment using custom ablation (Zyoptix, Bausch & Lomb) in 1 eye and standard ablation LASIK (PlanoScan, Bausch & Lomb) in the contralateral eye. A complete ophthalmologic examination was performed, including evaluation of glare test and contrast sensitivity test, with a follow-up of 6 months. RESULTS: Zyoptix eyes showed better results of glare test and contrast sensitivity test than the contralateral eyes. CONCLUSIONS: Wavefront-guided LASIK produces better visual quality than standard LASIK in the retreatment of refractive errors after primary LASIK.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Resultado visual comparativo entre dois aparelhos de excimer laser: Summit Apex Plus e Aesculap-Meditec Mel 70 em cirurgia de miopia e astigmatismo
    (Conselho Brasileiro de Oftalmologia, 2003-10-01) Fernandes, Marcia Domingues [UNIFESP]; Sartori, Marta [UNIFESP]; Campos, Mauro Silveira de Queiroz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To compare the visual result in consecutive case series between two different excimer laser equipments in LASIK for myopia and astigmatism. METHODS: We analyzed the results of lasik of 11 eyes of 11 patients with myopia ranging from -0.50 to -11.25 and astigmatism from -0.50 to -4.25 who were submitted to Summit Apex Plus and 11 eyes of 11 patients with myopia ranging from -0.50 to -8.75 and astigmatism from -0.50 to -4.75 submitted to Meditec-Aesculap Mel 70.The follow-up was 1, 3 and 12 months. RESULTS: Preoperatively the mean spherical equivalent was -4.75 for Summit and -4.8 for Mel 70. At 1, 3 and 12 months after surgery, the residual error for the Summit group was 0.54; 0.58 and 0.014 and for the Mel 70 group it was 0.02; 0.04 and -0.43. There were no statistically significant differences between two excimer laser equipments regarding: spherical equivalent (SE), uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA) pre- and postoperatively. One year after surgery 90.9% presented BCVA =20/20 for Summit and 73% for Mel 70, 81.8% had UCVA =20/20 for Summit and 45.5% for Mel 70. The final mean postoperative SE was 73% within ±1.00 D for Summit and 82% within ±1,00 D for Mel 70. Loss of one or two lines BCVA was 9% for Summit and 27.3% for Mel 70. Complications: 9% cases of diffuse lamellar keratitis and 45.5% of epithelial ingrowth for Mel 70. DISCUSSION: Both Summit Apex Plus and Meditec-Aesculap Mel 70 were found to be similar, safe and efficient for the correction of myopia and astigmatism.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Retratamento de LASIK com fotoablação personalizada versus fotoablação convencional utilizando o LADAR: Alcon
    (Soc Brasileira Oftalmologia, 2011-05-01) Vianna, Lucas Monferrari Monteiro [UNIFESP]; Nascimento, Heloisa Moraes do; Campos, Mauro [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Objective: To evaluate the results of conventional (Ladar, Alcon) and customized (LADARWave, Alcon) retreatment in eyes undergoing conventional primary LASIK. Methods: Retrospective revision of consecutive clinical report forms of 38 eyes of 38 patients who underwent LASIK retreatment for myopia and astigmatism. The operated eyes were divided into two equal groups. In the first was performed customized retreatment and, in the other, conventional retreatment. The following variables were compared: high contrast visual acuity and manifest refraction. The visual quality was estimated and compared using subjective survey offered to patients. Results: There was no statistical difference between the groups when comparing the variables studied. The spherical equivalent after retreatment was 0.36 in the conventional group and 0.47 in the custom (p = 0.079). Snelen visual acuity was 0.91 and 0.87, respectively (p = 0.07). The preoperative total aberrations was higher than the postoperative period in custom group (p < 0.001). In the conventional group there was no difference for any aberration evaluated. Complaints of glare (p = 0.117), photophobia (p = 0.987) and vision fluctuation (p = 0.545) were statistically similar between the two groups. Conclusion: Comparing the custom and conventional surgery for primary LASIK retreatment with LADAR, Alcon, there was no statistical difference in the quantity and quality of vision. Nevertheless, there was a higher percentage of patients with complaints in relation to the visual quality in the group undergoing conventional surgery. Custom surgery seems to have greater capacity to reduce the total aberrations than conventional.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Wavefront-guided refractive surgery results of training-surgeons
    (Conselho Brasileiro de Oftalmologia, 2010-08-01) Stillitano, Iane [UNIFESP]; Yamazaki, Ester [UNIFESP]; Melo Jr, Luiz Alberto [UNIFESP]; Bottos, Juliana [UNIFESP]; Campos, Mauro Silveira de Queiroz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To assess clinical outcomes and changes on higher-order aberrations (HOA) after wavefront-guided laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) for correction of myopia and myopic astigmatism performed by training-surgeons. METHODS: One hundred and seventy patients had customized LASIK (207 eyes) and PRK (103 eyes) performed by surgeons in-training using the LADARVision 4000 (Alcon, Fort Worth, TX). Preoperative and 1, 3, 6 and 12 months postoperative data of spherical equivalent (SE), best spectacle-corrected visual acuity (BSCVA) and uncorrected visual acuity (UCVA) were analysed. Wavefront changes were determined using the LADARWave Hartmann-Shack wavefront aberrometer and the pupil size was scaled for 6.5 mm. RESULTS: The mean SE in the LASIK group was -3.04 ±1.07 D and in the PRK group was -1.60 ± 0.59 D. At 1-year follow-up, (80.6%) (LASIK) and (66.7%) (PRK) were within ± 0.50 D of the intended refraction. The UCVA was 20/20 or better in (58.1%) (LASIK) and (66.7%) (PRK) of the operated eyes. A statistically significant positive correlation was found between achieved versus attempted refractive correction in both groups: LASIK (r=0.975, P<0.0005) and PRK (r=0.943, P<0.005). The higher-order aberrations (HO) RMS and coma did not changed signicantly in the PRK group between preoperative and 1-year follow-up. In the LASIK group the HO RMS and coma changed between preoperative and 1-month postoperative but remained statistically unchanged during 1-year follow-up. The spherical aberration showed statistically significant changes in both groups. CONCLUSIONS: Wavefront-guided LASIK and photorefractive keratectomy performed by training-surgeons were found to be similarly effective, predictable and stable.