Diode laser treatment for retinopathy of prematurity was successful in 81% of 21 eyes with 'threshold' (zone 2, stage 3+) disease. This compares favourably with cryotherapy and argon laser photocoagulation. The retinal outcome and technique are discussed.

OBJECTIVE To determine whether methylprednisolone or indomethacin can enhance photoreceptor survival after laser retinal injury in an animal model. DESIGN Experimental study. PARTICIPANTS Twenty rhesus monkeys. METHODS Twenty rhesus monkeys (Macaca mulatta) received a grid of argon green (514.5 nm, 10 ms) laser lesions in the macula of the right eye and a grid of neodymium:yttrium-aluminu...

The effect of ambient gas on the dynamics of the plasma generated by laser ablation of a carbon target using 1.06 mm radiation from a Q-switched Nd:YAG laser has been investigated using a spectroscopic technique. The emission characteristics of the carbon plasma produced in argon, helium and air atmospheres are found to depend strongly on the nature and pressure of the surrounding gas. It has b...

Purpose: To evaluate the efficacy of diode laser photocoagulation on the clinical course of patients with central serous retinopathy and to compare it with the effects of argon green laser in a similar group of patients. Methods: Thirty patients with type 1 unilateral central serous retinopathy were enrolled for the study. The patients were evaluated on parameters like best corrected visual acu...

Resonant holographic interferometry and dye-laser-resonance-absorption photography have been utilized to investigate the expansion of the laser ablation plumes produced by a KrF excimer laser beam (248 nm) focused onto an aluminum target (-0.1 cm’, 2-6 J/cm’). Plume expansion was studied in vacuum and in background argon gas pressures of 14 mTorr, 52 mTorr, 210 mTorr, 1 Torr, and 35 Ton: The ex...

There has been tremendous progress in the past decades in the utilization of lasers for treating patients with glaucoma. This article reviews the use of lasers in different areas of glaucoma, including the shift from argon laser trabeculoplasty (ALT) to selective laser trabeculoplasty (SLT), laser trabeculoplasty as an initial treatment for glaucoma, new laser trabeculoplasty procedures under i...

Presented here is a method to analyze carbon content in low alloy and carbon steels, utilizing the technique of handheld laser induced breakdown spectroscopy (HH LIBS). The method specifies the SciAps Z-200, the world’s only handheld analyzer capable of analyzing carbon content in alloys. The Z-200 uses a pulsed, 1064 nm laser, operating at 5.5 mJ/pulse and 50 Hz repetition rate. The onboard sp...