Resumen

ROJAS ALVAREZ, Eduardo; GONZALEZ SOTERO, Janet  y  PEREZ RUIZ, Ariadna. Subbasal nerve plexus and its relationship with the ametropy magnitude in refractive surgery with Excimer laser. Rev Cubana Oftalmol [online]. 2013, vol.26, n.1, pp.48-59. ISSN 0864-2176.

Objective: to describe the changes of the subbasal nerve plexus during a year, after Laser Excimer treatment and to relate these changes with the treated ametropy magnitude. Methods: prospective and longitudinal study carried out in 78 patients (151 eyes) who met the established selection criteria. The surgical technique was LASIK with pendulum microkeratome whereas the confocal microscopy Confoscan 4 served to image capture. The analysis was based on the summary measure methods. Results: the subbasal nerve plexus bigger than 200 mm with interconnections (87.4 %) prevailed. After 7 days of the surgery, no patient was included in this group; however, one year later, 20.5 % of the patients presented with these characteristics. Similarly, one year after the operation, most of patients with less than 3 D already treated, had over 200 mm subbasal nervous plexus without interconnections (group 3) or with interconnections (group 4), accounting for 50.5% and 19.4 % respectively; however, those patients having 6 D or more treated ametropy were found to be equally distributed in the 4 groups, even with nerve plexus smaller than 200 mm (group 2) (38.1 %). This means that the recovery process of the plexus was slower. Conclusions: after one year of LASIK, the subbasal nerve plexus fibers do not recover the preoperative conditions and their morphological re-establishment occurs more slowly as the treated ametropy magnitude is bigger.

Palabras clave : subbasal nervous plexus; LASIK; confocal microscopy.

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