Clear lens phacoemulsification for correction of high myopia
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To assess phacoemulsification and posterior chamber intraocular lens (IOL) implantation as an effective, safe, and predictable technique for the correction of high myopia.University Eye Clinic of Verona, Verona, Italy.A series of 25 eyes with myopia higher than -12.0 diopters (D) had clear lens extraction by phacoemulsification and IOL implantation in the capsular bag. The mean postoperative follow-up was 42.92 months +/- 3.76 (SD).No serious intraoperative complications occurred. Uncorrected visual acuity improved in all cases. The mean postoperative best corrected visual acuity improved by an average of 1 line. One case (4.0%) of postoperative retinal detachment (RD) occurred at 12 months. One case (4.0%) of biometric error (3.0 D) occurred.Clear lens extraction by phacoemulsification and IOL implantation in a series of highly myopic eyes was effective and had an acceptable predictability and a low rate of complications. Careful evaluation of the retinal periphery by indirect ophthalmoscopy is recommended to avoid postoperative RD.Objective: To explore the safety and availability of diabetic cataract with phacoemulsification and intraocular lens implantation. Method: 132 eyes of 112 patients who had diabetic cataract were performed phacoemulsification and lens implantation. Results: All the surgeries completed successfully. Most of complications after surgery were inflammation in anterior chamber and that could be cured through drug treatment. There was no serious complications during surgery.Conclusion: The visual acuity has no difference between the non-diabetic cataract patients and the control group if enough preparations for surgery are completed. The phacoemulsification and intraoculr lens implantation is an effect and reliable method to cure diabetic cataract.
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Purpose:To investigate the effect of watching 3-dimensional (3D) television (TV) on refractive error in children.Methods: Sixty healthy volunteers, aged 6 to 12 years, without any ocular abnormalities other than refractive error were recruited for this study.They watched 3D TV for 50 minutes at a viewing distance of 2.8 meters.The image disparity of the 3D contents was from -1 to 1 degree.Refractive errors were measured both before and immediately after watching TV and were rechecked after a 10-minute rest period.The refractive errors before and after watching TV were compared.The amount of refractive change was also compared between myopes and controls.The refractive error of the participants who showed a myopic shift immediately after watching TV were compared across each time point to assure that the myopic shift persisted after a 10-minute rest.Results: The mean age of the participants was 9.23 ± 1.75 years.The baseline manifest refractive error was -1.70 ± 1.79 (-5.50 to +1.25) diopters.The refractive errors immediately after watching and after a 10-minute rest were -1.75 ± 1.85 and -1.69 ± 1.80 diopters, respectively, which were not different from the baseline values.Myopic participants (34 participants), whose spherical equivalent was worse than -0.75 diopters, also did not show any significant refractive change after watching 3D TV.A myopic shift was observed in 31 participants with a mean score of 0.29 ± 0.23 diopters, which resolved after a 10-minute rest.Conclusions: Watching properly made 3D content on a 3D TV for 50 minutes with a 10-minute intermission at more than 2.8 meters of viewing distance did not affect the refractive error of children.
Rest (music)
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Radial keratotomy surgery was begun in a private ophthalmologic practice in July 1980. A statistical analysis of the first 557 cases is presented. The mean postoperative refractive error was -4.00 diopters. One year after surgery, 95% of the patients with a preoperative refractive error of -3.00 diopters or less had a visual acuity of 20/40 or better, and 79% of those with a refractive error of -3.25 to -6.00 diopters had a visual acuity of 20/40 or better. The mean decrease in keratotomy readings at six months postoperatively was 2.95 diopters. Of the patients with a preoperative refractive error of less than 6 diopters, 85% wore glasses rarely or not at all, whereas 15% wore a refractive correction full time.
Radial keratotomy
Refractive Surgery
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Objective To evaluate the effect of phacoemulsification and intraocular lens implantation with topical anesthesia in out patients department.Methods Phacoemulsification and intraocular lens implantation were performed successively in 132 patients(157 eyes) with topical anesthesia.Results Phacoemulsification and intraocular lens implantation were successfully performed in 152 eyes(96.8%)with topical anesthesia and 5 eyes(3 2%)need retrobulbar anesthesia additionally.The visual acuity and complications after operation in the topical anesthesia were the same as that performed previously under retrobular anesthesia.Conclusions Phacoemulsification and intraocular lens implantation may be performed with topical anesthesia through scleral tunnel incision.It is convenient for us to perform the operations on the out patient patients with cataract.
Topical anesthesia
Local anesthesia
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Objective: To observe the advantages and difficulties of small-incision non-phacoemulsification ECCE and intraocular lens implantation. Methods: 317 cases(373 eyes) of cataract received mall-incision non-phacoemulsification ECCE and intraocular lens implantation with frown-shaped scleral tunnel incision.We analysis the difficulties and complications of this surgery.Results: One month after surgery,there were 315 eyes which the visual acuity was better than 0.4(84.45%).All patients were satisfied with surgery.Conclusion: Small-incision non-phacoemulsification ECCE and intraocular lens implantation needs not expensive instruments and easy to catch on,it is more valuable to be spread used for hospitals at grass roots.
Intraocular lenses
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This study explores the relationship between the recalled age of first distance prescription and the final myopic refractive error developed in adults.Adult office workers, sent for a general health check-up without refractive selection, completed a questionnaire about age of first distance prescription, years of university study, and parental history of myopia, and were subjectively refracted by an ophthalmologist.Average age of the 397 consecutive myopic subjects was 42.6 +/- 9.6 years and 80.6% were males. The median age of first prescription was 20 years. In the group with earlier first distance prescription (ages 3 to 10), 25.6% developed low final refractive errors (-0.50 to -3.0 diopters), 38.5% developed moderate myopia (< -3.0 to -6.0 diopters), and 35.9% developed high myopia (< -6.0 diopters), while in the groups with later first distance prescription (ages 23 to 30), 90-100% developed low final refractive errors.Subjects developing myopia after age 20 had low myopia. Those subjects with an early recalled age of first prescription had a broad spectrum of myopic refractive errors, including a high proportion (approximately 2/3) of moderate to high myopia, and approximately 1/3 of low myopia.
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Objective To study application and advantages of small-incision non-phacoemulsification and intraocular lens implantation (IOL).Methods Three hundred and twenty six cases (348 eyes) of cataract were undergone small-incision non-phacoemulsification and intraocular lens implantation (IOL).Results The best corrected visual acuity higher than 0.5 was seen in 256 eyes(73.6%)in one week after operation and in 316 eyes(90.8%)within three month after operation.Conclusion Small incision, minimal tissue damage, less complications and rapid recovery of vision are advantages of small-incision non-phacoemulsification and intraocular lens implantation.
Intraocular lenses
Surgical incision
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