Excimer photoablation was performed in a 6.0-6.5 mm optical zone; 4) outcome: dry eye parameters. The ND:YAG laser works via a photodisruptive mechanism. Femtosecond (FS) laser vision correction procedure for moderate to high ... Two-photon microscopy-guided femtosecond-laser photoablation of avian ... Safety seemed high and comparable. Because the energy of photoablation is used only to break . SUMMARY 42. In short, excimer laser emits far UV light wavelength that can disrupt chemical bonds in the . Inside the tissue, the laser light intensity is exponentially attenuated: I = I 0 Exp[-x/A], where A is absorption depth from Figure 3.When laser intensity I 0 is greater than ablation threshold . It is a flapless procedure in which an intrastromal lenticule is created between two photodisruption planes and removed mechanically from an arcuate side cut of 3 to 4 mm . Effects of transcorneal iridal photocoagulation on the canine corneal ... Photoablation Photodisruption Photocoagulation . Figure 4 illustrates a laser beam irradiating the tissue surface from the left. hearts remodeled between the area of the av cushion that was disrupted and rapidly at this magnitude (as described in av photoablation incident laser energy (fig. Punctal Occlusion Dilation & Irrigation Cyst incision and evacuation Corneal debridement Corneal foreign body removal In all patients . The first clinical results of 208 procedures conducted from June to November 2000 is reported. Photodisruption As with the Nd:YAG laser, FSL cuts tissue through a process of photodisruption (in contrast to excimer and argon lasers that use photoablation and photocoagulation, respectively 10 ). Femtosecond laser photodisruption of vitelline vessels of avian embryos ... By 48 h, all veins were clearly visible and distended but arteries were significantly constricted, suggesting that the heart became extremely . Helium neon laser gives radiation in the red visible region at 632.8 nm. Photoablation occurs due to the action of an intense ultraviolet (UV) laser pulse that photochemically decomposes various cellular and extracellular components. Photo-mechanical: photoablation and photodisruption when laser absorption results in tissue temperature exceeding the vaporization threshold (100-305 degrees Centigrade). Tissue Interaction And Laser Safety Flashcards Preview photoablation vs photodisruption Corneal endothe- lial cell damage associated with Nd:YAG iridotomies has been theorized to develop secondary to plasma formation.14 DIS C USSIO N Photodisruption of the iridal tissue results in the formation Transcorneal laser applications have become common in of plasma, which propagates toward the endothelium.
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