Efficacy of 0.15% trypan blue for staining and removal of the internal limiting membrane, epiretinal membranes, and the posterior hyaloid during pars plana vitrectomy.
Explore the source record for details and available documents.
Biomedical subjects
Publications and source records attributed to Raj Vardhan Azad.
Explore the source record for details and available documents.
PURPOSE: Patients with endophthalmitis have extensive fibrinous exudates in the anterior chamber. Clearance of these exudates in pseudophakic patients during vitrectomy is difficult. We evaluated the results of the pars plana approach for clearing these exudates. MATERIAL AND METHODS: Eighteen patients with pseudophakic endophthalmitis underwent clearance of anterior chamber exudates through the pars plana approach after initial creation of a peripheral iridectomy with a vitrectome. RESULTS: The exudates were adequately cleared in all 18 patients with good posterior segment visualization during vitrectomy. Minor punctate iris bleeds (4 patients), intraoperative dislocation of the intraocular lens (IOL) (1 patient) and postoperative dislocation of the IOL following blunt trauma, 9 months after vitrectomy (1 patient) were the complications noted. CONCLUSION: This technique is simple, safe and helps clearing anterior chamber exudates. It also permits excellent visualization during vitrectomy for pseudophakic endophthalmitis.
PURPOSE: To evaluate the success of and timing for intervention in retinopathy of prematurity (ROP). PATIENTS AND METHODS: Eighty-two eyes of 50 children with stage 3 ROP were divided into two groups based on severity. Cryotherapy or laser therapy was performed soon after the detection of threshold stage in the first group of 40 eyes and at a prethreshold stage in the second group of 42 eyes. The patients were observed from 4 months to 2 years and regression or progression was noted. Unfavorable outcomes including macular and disc drag and the progression of ROP to stages 4 and 5 were correlated with birth weight, gestational age, age at threshold, and age at intervention. RESULTS: Regression of ROP occurred in 75 (91.46%) of the eyes. An overall unfavorable outcome occurred in 14 (17.07%) of the eyes, 11 of which reached threshold during the critical period of 37 to 39 postconceptional weeks of age. Of the cases (n = 14) with an unfavorable outcome, 9 eyes (22.5%) were in the group treated in the threshold stage (n = 40) and 5 eyes (11.9%) were in the group treated at a prethreshold stage (n = 42). The mean birth weight, gestational age, age at threshold, and age at intervention in the favorable and unfavorable outcome groups were 953.2 +/- 2.19 g and 1,059.57 +/- 2.62 g, 28.63 +/- 2.03 weeks and 28.36 +/- 1.98 weeks, 38.04 +/- 2.13 weeks and 37.71 +/- 1.13 weeks, and 38.32 +/- 2.34 weeks and 38.25 +/- 1.05 weeks, respectively. CONCLUSION: Early intervention at a prethreshold stage of ROP or at a younger postconceptional age (ie, younger than 37 weeks) may decrease the incidence of an unfavorable outcome.
PURPOSE: To study the ocular growth pattern in cryotherapy- and laser-treated prethreshold retinopathy of prematurity (ROP) and its effect on scleral rigidity. METHODS: In a prospective study, axial length, anterior chamber depth, and scleral rigidity were assessed in 12 eyes with no ROP, 12 eyes with spontaneously regressed ROP, 12 eyes with cryotherapy-treated prethreshold ROP, and 14 eyes with diode laser-treated prethreshold ROP at 36 weeks, 40 weeks, and 52 weeks postconceptional age. RESULTS: Cryotherapy- and laser-treated ROP eyes at prethreshold stage exhibited shorter axial lengths and shallower anterior chamber depth compared to eyes with no ROP or spontaneously regressed ROP. Scleral rigidity was not altered in ROP eyes including those that underwent cryotherapy or laser treatment. CONCLUSIONS: Growth of eyes with ROP is arrested including those treated with cryotherapy or laser at prethreshold stage. Cryotherapy or laser treatment has no weakening effect on the scleral coat.
We describe enhanced mydriasis in maximally medically dilated pupils during indirect diode laser therapy for threshold retinopathy of prematurity in 20 consecutive eyes of 10 neonates.
A small amount of fluid is usually present in the space between the posterior surface of the silicone oil bubble and the retinal surface in silicone oil-filled eyes. A new technique is described for sampling this fluid using a 27-gauge cannula mounted on an empty tuberculin syringe that is connected to a 10-mL syringe through tubing.