Resultados refractivos posqueratoplastia lamelar anterior superficial con láser excimer guiado por topografía en queratocono grado III
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Universidad Industrial de Santander
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Objetivo: determinar los resultados refractivos y funcionales en operados de queratoplastia lamelar anterior superficial asistida con láser excimer topográfico en queratocono grado III. Materiales y métodos: estudio experimental, abierto, no controlado, longitudinal y prospectivo, en 35 ojos de 31 pacientes con edad promedio de 35,3 años, seguimiento entre 12 y 51 meses, operados en la Clínica Internacional de Retinosis Pigmentaria “Camilo Cienfuegos”, entre enero de 2006 y diciembre del 2010. Resultados: la agudeza visual sin corrección mejoró de 0,04 a 0,39 y la agudeza visual con corrección de 0,28 a 0,78; el equivalente esférico se redujo de -13,02 a -1,69; la esfera y el cilindro disminuyeron de -10,13D ± 4,73 a -0,44D ± 3,22 y de -5,67D ± 2,32 a -2,52D ± 1,38, respectivamente. La queratometría disminuyó de 56,8D y 51,53D a 45,02 y 42,02 en el posoperatorio. La densidad celular preoperatoria fue de 2313,81 cel/mm2 ± 322,10; varió a 2170 cel/mm2 ± 294,92 en el posoperatorio. El lecho residual estromal fue de 153,22 μ. Discusión: en correlación con la literatura, el queratocono se presenta en la adolescencia y la juventud y conduce al trasplante de córnea con más frecuencia en estas etapas de la vida. La queratometría promedio posoperatoria fue inferior a la reportada por otros investigadores que realizaron estudios con semejante técnica quirúrgica. Conclusiones: la queratoplastia lamelar anterior superficial con láser excimer, puede ser considerada como indicación primaria de tratamiento en el queratocono grado III (MÉD.UIS. 2012;25(3):195-202)
Objective: determine refractive and functional results in patients with keratoconus grade III underwent to topography-guided anterior lamellar keratoplasty assisted with excimer laser. Materials and Methods: uncontrolled experimental study, longitudinal and prospective, in 35 eyes of 31 patients with an average age of 35.3 years old, followed between 12 and 51 moths; operated at “Camilo Cienfuegos” International Center of Retinitis Pigmentosa, between January 2006 and December 2010. Results: the uncorrected visual acuity improved from 0.04 to 0.39 and the best corrected visual acuity improved from 0.28 to 0.78; the spherical equivalent was reduced from -13.02 to -1.69D. The sphere and cylinder decreased from -10.13D ± 4.73 to -0.44D ± 3.22 and from -5.67D ± 2.32 to -2.52 ±1.38, respectively. The average of the keratometry decreased from 56.8D and 51.53D to 45.02 and 42.02 in the post-surgery. The cellular density pre-surgery changed from 2313.81 cel/mm2 ± 322.10 to 2170 cel/mm2 ± 294.92 in postoperative. The residual stromal bed was 153.22 μ. Discussion: in correlation with the literature, the keratoconus appears in the adolescence and youth, leading to the corneal transplantation more often in these life stages. The average postsurgical keratometry was inferior to the reported by others investigators who practiced procedures with similar surgical technique. Conclusions: superficial anterior lamellar keratoplasty, assisted with excimer laser, can be considered as primary indication of treatment in keratoconus grade III (MÉD.UIS. 2012;25(3):195-202).
Objective: determine refractive and functional results in patients with keratoconus grade III underwent to topography-guided anterior lamellar keratoplasty assisted with excimer laser. Materials and Methods: uncontrolled experimental study, longitudinal and prospective, in 35 eyes of 31 patients with an average age of 35.3 years old, followed between 12 and 51 moths; operated at “Camilo Cienfuegos” International Center of Retinitis Pigmentosa, between January 2006 and December 2010. Results: the uncorrected visual acuity improved from 0.04 to 0.39 and the best corrected visual acuity improved from 0.28 to 0.78; the spherical equivalent was reduced from -13.02 to -1.69D. The sphere and cylinder decreased from -10.13D ± 4.73 to -0.44D ± 3.22 and from -5.67D ± 2.32 to -2.52 ±1.38, respectively. The average of the keratometry decreased from 56.8D and 51.53D to 45.02 and 42.02 in the post-surgery. The cellular density pre-surgery changed from 2313.81 cel/mm2 ± 322.10 to 2170 cel/mm2 ± 294.92 in postoperative. The residual stromal bed was 153.22 μ. Discussion: in correlation with the literature, the keratoconus appears in the adolescence and youth, leading to the corneal transplantation more often in these life stages. The average postsurgical keratometry was inferior to the reported by others investigators who practiced procedures with similar surgical technique. Conclusions: superficial anterior lamellar keratoplasty, assisted with excimer laser, can be considered as primary indication of treatment in keratoconus grade III (MÉD.UIS. 2012;25(3):195-202).
Keywords
Corneal Transplantation, Excimer Lasers, Keratoconus, Trasplante de Córnea, Láseres de Excímeros, Queratocono