Vestnik oftalmologii · 2020
[Capabilities of remote laser homeostasis of the conjunctiva and sclera].
СтатьяНазвание и аннотация: Оригинал на русском
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Kopaeva V G, Drjagina O B, Kopaev S Yu
Аннотация
INTRODUCTION: During some eye surgeries, a need for hemostasis can arise in order to prevent bleeding.
PURPOSE: To determine the optimal settings for remote laser action of Nd:YAG laser with a wavelength of 1.44 µm on the conjunctival and episcleral vessels of the eye to stop bleeding, as well as for preemptive anemisation of tissue prior to performing a surgical incision.
MATERIAL AND METHODS: The characteristics of the laser impact on vessels of the conjunctiva and sclera were studied clinically while conducting surgeries on 36 patients for cataract, glaucoma and excision of pterygium.
RESULTS: The best mode of operation of Nd:YAG laser for remote laser anaemisation of the area of planned cut were 1.44 µm wavelength with 5 Hz frequency and energy of 100 mJ. Remote hemostasis can be achieved with the following settings for energy parameters: for pulse frequency of 5 Hz - pulse energy from 150 to 200 mJ; for pulse frequency of 10 Hz and 15 Hz - energy from 100 to 150 mJ; for pulse frequency of 25 Hz - energy not exceeding 100 mJ.
CONCLUSION: No scar remained after the action of 1.44-µm Nd:YAG laser, and recanalization of individual vessels was possible.
PURPOSE: To determine the optimal settings for remote laser action of Nd:YAG laser with a wavelength of 1.44 µm on the conjunctival and episcleral vessels of the eye to stop bleeding, as well as for preemptive anemisation of tissue prior to performing a surgical incision.
MATERIAL AND METHODS: The characteristics of the laser impact on vessels of the conjunctiva and sclera were studied clinically while conducting surgeries on 36 patients for cataract, glaucoma and excision of pterygium.
RESULTS: The best mode of operation of Nd:YAG laser for remote laser anaemisation of the area of planned cut were 1.44 µm wavelength with 5 Hz frequency and energy of 100 mJ. Remote hemostasis can be achieved with the following settings for energy parameters: for pulse frequency of 5 Hz - pulse energy from 150 to 200 mJ; for pulse frequency of 10 Hz and 15 Hz - energy from 100 to 150 mJ; for pulse frequency of 25 Hz - energy not exceeding 100 mJ.
CONCLUSION: No scar remained after the action of 1.44-µm Nd:YAG laser, and recanalization of individual vessels was possible.