Open AccessMorphological studies of the cadaveric sclera after nonpenetrating sclerotomy by ND: YAG laser
Author(s) -
А. Е. Синеок,
А. В. Золотарев,
Г. А. Николаева
Publication year - 2018
Publication title -
rossijskij oftalʹmologičeskij žurnal
Language(s) - English
Resource type - Journals
eISSN - 2587-5760
pISSN - 2072-0076
DOI - 10.21516/2072-0076-2018-11-4-64-67
Subject(s) - sclera , laser , materials science , cadaveric spasm , optics , fluence , nd:yag laser , ophthalmology , medicine , anatomy , physics
Purpose : to reveal the changes of the morphological structure of cadaveric human sclera after Nd: YAG laser irradiation. Material and methods . Laser pulses (Nd: YAG) (Lumenis) (power 7.0–7.4 mW, pulse duration 4 ns, wavelength 1064 nm) were applied to the sclera of an isolated eyeball at a distance of 4 to 8 mm from the limbus. Three irradiation types were used: one series of single pulses, a series of triple pulses, and a series of six pulses. Results . Incisions created with single pulses showed insignificant surface defects of the sclera. In triple pulses, the defect of the anterior layers of the sclera capture affected 15 % of the scleral thickness, and in six pulses the defect reached 30 % of the scleral thickness. Conclusions . To achieve a punctate hole in the sclera, a single Nd: YAG pulse is insufficient. To obtain a significant depth of scleral incision at least a triple pulse is needed, which must be taken into account in clinical practice as well as in assessing the results of Nd: YAG laser impact on the rigidity of the sclera.