PURPOSE To perform acridine orange digital fluorography on rats after scatter photocoagulation to investigate alterations of retinal microcirculation at the capillary level, the authors used leukocyte dynamics as a parameter. METHODS Twenty-five pigmented rats (Long-Evans) were studied. Argon laser photocoagulation, extending 6 disc diameters from the optic disc, was delivered to one half of ...

Since its discovery in the 1940s, retinal photocoagulation has evolved immensely. Although the first photocoagulators utilised incandescent light, it was the invention of laser that instigated the widespread use of photocoagulation for treatment of retinal diseases. Laser permits choice of electromagnetic wavelength in addition to temporal delivery methods such as continuous and micropulse mode...

OBJECTIVE To investigate the response of retinal vessel diameters to photocoagulation treatment and their role for the success of laser treatment in patients with retinal vein occlusion. METHODS The study included 14 patients with branch vein occlusion or macular vein occlusion. The ophthalmologic examination included best-corrected visual acuity, biomicroscopy, fundus photography, and fluore...

PURPOSE To utilize optical coherence tomography (OCT) and OCT angiography (OCTA) to describe alterations in the retinal and choriocapillaris vasculature following remote laser photocoagulation. Lesions are classified on the basis of choriocapillaris alteration as evaluated on en face OCTA. METHODS This was a retrospective, cross-sectional study analyzing 28 laser photocoagulation scars from 8...

PURPOSE Macular edema is one of the serious side effects associated with panretinal photocoagulation (PRP). The inhibitory effect of triamcinolone acetonide (TA) on leukocyte-endothelial cell interactions in vivo after PRP was evaluated. METHODS Argon laser photocoagulation was performed in one half of the retinas in male Brown Norway rats. Experimental rats were injected with 2 mg TA (50-mic...

BACKGROUND/AIMS A new real time monitoring system has been developed to locate the fixation point during juxtafoveal laser photocoagulation. METHOD The red diode laser beam is combined coaxially with the illumination beam to image a cross in the focal plane of the slit lamp, which allows projection of a red cross onto the patient's fundus. 27 patients with juxtafoveal choroidal neovascularisa...

eales' disease is an idiopathic obliterative retinal vasculopathy that is treated with laser photocoagulation, and/or vitrectomy. in order to determine visual outcomes and regression of retinal neovascularization following scattered peripheral retinal photocoagulation, and/or vitrectomy in cases with eales' disease, we did a retrospective study of the records of these patients treated...

OBJECTIVE Retinopathy of prematurity (ROP) is a leading cause of adverse visual outcomes in premature infants. Both laser photocoagulation and cryotherapy have been demonstrated in clinical trials to be efficacious in reducing the incidence of visual loss occurring secondary to threshold ROP. Visual data recently have become available concerning the long-term clinical efficacy of both treatment...

macular edema following diabetic retinopathy is one of the ocular complications associated with diabetes, and it is the leading cause of visual loss in the active young and middle aged population in developed countries. while all patients with diabetes particularly those with diabetic retinopathy are at increased risk of developing eye complications, early detection and timely intervention may ...

104 consecutive patients with upper gastrointestinal bleeding admitted to a district general hospital over a period of 20 months were considered for laser photocoagulation. 58 patients were found to have peptic ulcers, of which 42 had stigmata of recent haemorrhage accessible to laser photocoagulation. 17 were treated with a Nd-YAG laser and 25 were managed conservatively. There was no signific...