Extraction Of Intraocular Foreign Body Research Articles

Prognostic Factors in Vitrectomy for Posterior Segment Intraocular Foreign Bodies

The aim of this study was to identify the prognostic factors influencing outcome after the removal of retained posterior segment intraocular foreign bodies (IOFBs) by pars plana vitrectomy. We reviewed the records of 42 consecutive patients (39 men and 3 women with a mean age of 26.8 years) operated between January 2001 and January 2005 by the same surgeon for IOFB after penetrating ocular injury. All eyes underwent IOFB removal via pars plana vitrectomy. Postoperative retinal detachment was considered as the anatomic failure. Associations between anatomic outcome and various preoperative, operative, and postoperative variables were statistically analyzed. Chi-square test and Mann-Whitney U test were used to evaluate the association between two categorical variables. The mean time interval between the trauma and the IOFB removal was 5.3 days (range, 1 day to 30 days). The mean length of follow-up was 18.3 months (range, 6 months to 3 years). Preoperative retinal detachment was present in 19% of patients. After the IOFB removal, the retina was detached in 28.5% of patients (12 of 42 patients). After a second vitrectomy performed in 10 patients, final anatomic success rate was 89.8% (37 of 42 patients). Time between trauma and IOFB extraction, presence of intraocular hemorrhage, preoperative retinal detachment and primary surgical repair combined with the IOFB removal were significantly associated with the postoperative retinal detachment. Age, sex, entrance wound location, presence of endophthalmitis, location of IOFB, nature of IOFB, preoperative visual acuity, use of an encircling band, type of endotamponade, use of lensectomy were not significantly associated with the presence of postoperative retinal detachment. Delay in IOFB extraction, presence of intraocular hemorrhage, preoperative retinal detachment, primary surgical repair combined with IOFB removal are the predictive factors for anatomic failure.

Noncontact panoramic viewing systems for vitrectomy and removal of intraocular foreign bodies

目的 评价在非接触式全视野镜下行玻璃体切除联合眼内异物摘出术的疗效.方法 回顾性分析47例(48眼)眼球穿孔伤合并眼内异物的临床资料.所有玻璃体切除眼内异物摘出联合手术均在非接触式全视野镜下完成.结果 48眼眼内异物均一次性成功摘出.对40眼随访3～35月(平均11个月),38眼(95.00%)视力较术前明显提高,2眼(5.00%)视力不变.结论 在非接触式全视野镜下行玻璃体切除联合眼内异物摘出术可提供宽广的手术视野,明显改善视力、因此是治疗眼内异物的一种较有效的方法。

Clinical analysis on extraction of non-magnetic intraocular foreign bodies in posterior segment by vitrectomy

目的 评价经玻璃体切除术治疗眼后段非磁性异物的临床效果.方法 回顾性分析经玻璃体切除术治疗62例(65眼)眼后段非磁性异物的临床资料.结果 所有患者均一次手术成功摘出异物.术后视力情况:合并视网膜脱离者42眼,术后视力提高12眼(28.57%),无变化28眼(66.67%),视力下降2眼(4.76%).未合并视网膜脱离者23眼,术后视力提高15眼(65.22%),视力无变化8眼(34.78%).结论 经玻璃体切除术可有效地摘出眼后段非磁性异物,但术后效果受异物长期眼内存留的影响而较差.未合并视网膜脱离者视力预后明显优于合并有视网膜脱离者。

Vitrectomy combined intravitreal drugs injection for endophthalmitis

目的 评价玻璃体切除联合玻璃体腔注药治疗严重眼内炎的临床应用价值.方法 对43例(43眼)感染性眼内炎进行玻璃体切除联合玻璃体腔注药、眼内异物摘出,或联合晶状体切除、视网膜脱离复位及硅油或惰性气体填充术,配合全身及局部应用抗生素(或抗真菌药)、皮质类同醇药物治疗.随访4月～4年.结果 41眼(95.35%)眼内炎控制,保存了眼球;35眼(81.40%)视力不同程度的提高;视力无变化者3眼(6.98%);视力降低3眼(6.98%);1眼(2.33%)作眼内容摘除;1例术后自动出院,失随访.结论 玻璃体切除联合玻璃体腔注药是治疗严重眼内炎的有效方法。

Vitrectomy and extraction of intraocular foreign bodies

目的 探讨眼内异物的手术方法及技巧.方法回顾分析我院1997年8月～2002年10月眼内异物54例(54眼)行玻璃体切除联合眼内异物摘出术的治疗效果.结果54眼异物均摘出成功.术后视力增加者42眼,占77.78%;不变者12眼,占22.22%.10眼视网膜脱离者,术后视网膜完全复位8眼.结论玻璃体切除联合眼内异物摘出术是治疗眼内异物的有效方法。

Extraction of enormous intraocular foreign body combine with lensectomy and vitreoretinal surgery

目的 探讨经前房通过巩膜隧道切口摘出眼内巨大异物联合晶状体玻璃体视网膜手术的临床疗效及术式选择.方法分析12例(12眼)眼内巨大异物摘出病例,联合晶状体切除、玻璃体切除及视网膜手术.采用常规睫状体平坦部三切口闭合式玻璃体切除联合晶状体切除、巩膜垫压、环扎、气液交换、硅油填充及眼内光凝等,异物通过巩膜隧道切口用异物镊经前房夹出.结果12眼异物均一次摘出成功,摘出成功率100%.手术后并发症主要有出血、角膜水肿等.术后视力下降1眼,不变1眼,好转10眼.结论经前房通过巩膜隧道切口摘出巨大眼内异物联合晶状体玻璃体视网膜手术安全、有效,术后角膜散光小,有利于视功能的恢复,可减少术后并发症的发生。

Extraction of posterior polar intraocular foreign bodies with viscoelastics suspend technique

目的 探讨后极部眼内异物摘出方法.方法借助眼用黏弹剂(玻璃酸钠)的黏弹性和内聚性,首先将异物包绕、游离、悬浮,然后视异物大小、形状酌情选用自制异物回吸针头或异物钳摘出异物.结果本组17例(17眼)后极部眼内异物,均一次顺利摘出,无一发生手术损伤或手术并发症.术后视力提高者14眼,视力不变2眼,下降1眼.结论借助黏弹剂游离悬浮法摘出后极部眼内异物,可明显降低手术难度、手术损伤及手术并发症.尤其是悬浮回吸法,效果更优。

Extraction of intraocular foreign body combining with cataract extraction and IOL implantation

目的 评价眼内异物伴外伤性白内障行异物摘出联合白内障摘出人工晶状体植入术的临床疗效.方法对25例(25眼)眼内异物伴外伤性白内障依异物的位置不同而采用3种术式:采用玻璃体切除(9眼)或磁铁吸出玻璃体异物(10跟),联合晶状体超声乳化及折叠人工晶状体植入;或经角膜缘切口摘出晶状体内异物联合囊外摘出PMMA人工晶状体后房植入(6眼).结果随访3月,术后视力≥0.515眼,0.1～0.4 8眼,0.082眼.术后视力低的主要原因是眼铁质沉着症.术后视力与角膜伤口的大小部位有关,与视网膜异物与黄斑区的距离有关.术后无眼内炎或视网膜脱离的发生.结论'准确判定预后、排除眼内炎视网膜脱离的因素而行眼内异物摘出联合人工晶状体植入是可行的。

MANAGEMENT OF MAGNETIC INTRAOCULAR FOREIGN BODY

Posterior segment intraocular foreign bodies pose a problem in restoration of significant visual acuity usuallydue to delayed presentation, improper evaluation and management. However, good history taking, meticulousocular examination and proper management can result in reasonable visual acuity in cases of retainedintraocular foreign body in the posterior segment. We are presenting a case report of penetrating oculartrauma with retained intraocular foreign body in the posterior segment. Following intraocular foreignbody removal, core vitrectomy and subsequent cataract extraction, the patient had best corrected visualacuity of 6/9.Key Words: Intraocular foreign body, vitrectomy, cataract.

Surgical Treatment of War Lesions to the Posterior Segment of the Eye

The aim of this study was to assess the outcome of surgical treatment of war lesions to the posterior eye segment. During a 1-year period, 96 patients with severe eye lesions, 54 of them with intraocular foreign bodies (56.2%), were operated on at the Institute for Posterior Eye Segment Diseases and Trauma, Zagreb Clinical Hospital. Surgical procedures performed included high-quality primary microsurgery of the wound, extraction of intraocular foreign bodies, treatment of double perforating wounds by silicone oil tamponade and gas, and emergency vitrectomy when necessary. A varying degree of vision function improvement was achieved in 67 patients (69.7%). Most of the foreign bodies removed were metal and nonmagnetic. Only six foreign bodies were made of glass, and two 2 were of plastic material. In 29 patients (30.3%), the vision function remained unchanged or deteriorated after vitrectomy. Although satisfactory results were achieved, definitive evaluation of the procedures will be possible only after long-term follow-up.

Combined phacoemulsification, vitrectomy, foreign-body extraction, and intraocular lens implantation

PurposeTo assess the outcome of simultaneous phacoemulsification, pars plana vitrectomy, intraocular foreign-body extraction, and intraocular lens (IOL) implantation. SettingSSK Ankara Eye Hospital, Department of Vitreoretinal Surgery, Ankara, Turkey. MethodsSeventeen patients with corneal perforation, intraocular foreign body, vitreous hemorrhage, and lens opacity had simultaneous clear corneal phacoemulsification, pars plana vitrectomy, intraocular foreign-body extraction, and IOL implantation. ResultsPostoperative complications included massive retinal fibrosis in 2 patients, retinal detachment in 1, and cilioretinal artery occlusion in 1. At a mean follow-up of 15.2 months, best corrected visual acuity improved in the remaining 13 eyes (76%). The IOL was stable in all cases. ConclusionCombined phacoemulsification with IOL implantation and vitreoretinal surgery was safe in selected cases of penetrating ocular trauma resulting from an intraocular foreign body.

Extraction of Intraocular Foreign Bodies by Pars plana Vitrectomy

We reviewed the medical records of 44 patients who underwent a pars plana vitrectomy to remove posttraumatic intraocular foreign bodies. The group most affected was that of males with a mean age of 28 years, who sustained a job injury, presenting with a single corneal laceration less than 2 mm in extension. There were 31 (70.45%) metallic foreign bodies. At surgery, 27 (61.36%) of the 44 foreign bodies were removed with forceps and 17 (38.63%) with the rare-earth magnet. From these patients, 84.61% obtained a final visual acuity equal or better than that on admission. We did not find a statistically significant difference between the groups with different timing on their vitrectomy, nor between groups presenting with and without vitreous hemorrhage.

Theoretical investigation of methods for the extraction of Copper intraocular foreign bodies with pulsed magnetic fields

The possibility to extract copper foreign bodies from the human eye with pulsed high field magnets is theoretically investigated. In principle it is feasible to succeed by a combination of a superconducting dc-magnet and a coil generating an asymmetrical pulsed magnetic field. Also sufficiently high attractive forces can be produced in not too small copper particles by rapidly shutting down a 10 MW Bitter-magnet. The medical limitations of the method are discussed.

Experiments with Pulsed Magnets for the Extraction of Intraocular Foreign Bodies

In order to achieve a controlled extraction of ferromagnetic intraocular foreign bodies, experiments were performed with pulsed magnets. It turned out that the vitreous bodies of the eyes used in the investigation were rubber-elastic, rather than visco-elastic, with relaxation times of the order 100 msec.

Intraocular foreign body extraction in early chalcosis.

A case of pure copper retrolenticular foreign body occurred in a relatively quiet eye. The corneal, lenticular, and vitreal changes of chalcosis were present, but retinal toxicity was absent. Roentgenograph and electroretinographic studies did not reveal the presence or composition of the foreign body. Ultrasonography was positive. Surgical removal is suggested as the most likely preventative against long-term retinal toxicity.

Magnet Extraction of Intraocular Foreign Bodies by Anterior and Posterior Routes : A Survey of 150 Cases

Magnet Extraction of Intraocular Foreign Bodies by Anterior and Posterior Routes : A Survey of 150 Cases

The technique of extraction of intraocular foreign bodies

Lose no time as infection may have time to set in or fragment may become embedded. X-ray is not needed for magnetic foreign bodies in the majority of cases. 1. (a) 70 to 80 per cent can be pulled forward from the posterior part of the eye, through the vitreous, around the lens, into the posterior chamber by a good giant magnet. 2. (b) If imbedded in the wall of the eye, this is impossible. Then localization is essential. There are three important means: (1) careful study of the path of the foreign body; (2) x-rays, which give pretty close localization but not so precise that one can be sure to cut down exactly on the foreign body; (3) for exact final localization, a short tip of a good hand magnet applied to the sclera tentatively and systematically over the suspected area. The tip is pressed lightly on the sclera and then lifted a couple of millimeters and again applied and lifted. The slight bulging of the sclera and the slight sensation of attraction reveal the exact site of the foreign body. Access to the posterior part of the eye is possible, as in operations for separated retina, by temporary section of a rectus muscle and the use of a good retractor (nonmagnetic). Cutting through the wall of the eye by the thrust of a Graefe knife may cause damaging hemorrhage. To avoid this use a diathermy knife. It is not necessary to probe the vitreous with the magnet or even to penetrate the vitreous if the foreign body has been precisely localized. Application to the lips of the wound suffices if the magnet is a good one. Avoid a giant magnet for foreign bodies that are within 2 or 3 mm. of the magnet. Avoid extensions applied to the giant magnet to act as hand magnets. After extracting diasclerally, apply a ring of diathermy micro-punctures around the site of the scleral wound to forestall separation of the retina. Results, especially late or end results, of extraction by the anterior route with the giant magnet are much better than final results with diascleral extraction by the old method, still widely used. Statistics are not available for the more modern technique here described. Details of technique for foreign bodies, magnetic and non-magnetic in different parts of the eye—cornea, anterior chamber, posterior chamber, lens, vitreous, imbedded in the wall of the eye. Importance of good light. Six causes of failure: Most important is inadequate equipment. What constitutes adequate equipment and how to test it. Hand magnet in contact should pull a fragment well over 5,000 times its weight. Giant magnet at 20 mm. should pull a fragment well over fifty times its weight. Obviously, a magnet pulling fifty will fail oftener than one pulling eighty.

Magnet Extraction of Intraocular Foreign Bodies: Important Points in Technique

The paper deals with practical points of technique as chosen from the viewpoint of the author's experience.

The Magnet Extraction of Foreign Bodies from the the Eyeball

A critical review of the subject based upon the following papers which appeared in the British Journal of Ophthalmology, January, 1917: 1. “The Removal of Foreign Bodies by Means of a Giant Magnet” by G. H. Pooley, F. R. C. S. of Sheffield, 2. “The Technique of the Haab and Small Magnets in the Extraction of Intraocular Foreign Bodies,” by Maurice H. Whiting, Captain R. A. M. C., and Charles Goulden, Lieutenant, R. A. M. C. 3. “The Ring Magnet,” by T. Harrison Butler, M. D., Leamington, England.