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Results for “Lens Subluxation”

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At least 73 records · Page 4Linked to original sources
PubMed2004

Spontaneous, late, in-the-bag intraocular lens subluxation in a patient with a previous acute angle-closure glaucoma attack.

Cataract surgery was performed in a 49-year-old woman 16 months after an acute angle-closure glaucoma attack. Zonular dialysis was observed during surgery, but the intraocular lens (IOL) was implanted in the capsular bag uneventfully. At 4 1/2 months, 1 IOL loop wrapped in the bag herniated into the anterior chamber. The patient had no history of trauma. The IOL loop remained in the anterior chamber for 9 months, until the subluxated IOL spontaneously returned to its original position. Six months later, the IOL again dislocated into the anterior chamber.

Acute Disease↗
PubMed1983

Wildervanck's syndrome with bilateral subluxation of lens and facial paralysis.

A 15-year-old female was found to have the typical features of Wildervanck's syndrome, including Klippel-Feil anomaly, abducens paralysis, retraction of the bulbi, and deafness. In addition, she had bilateral lens subluxation and facial paralysis, neither of which have been reported in patients with Wildervanck's syndrome.

Abducens Nerve↗
PubMed1987

Complications associated with STAAR silicone implants.

We compared the incidence of various complications in consecutive series of cases in which 76 eyes received STAAR silicone intraocular implants and 76 eyes received small incision IOLAB G708G polymethylmethacrylate (PMMA) intraocular implants. All surgeries were performed by the same surgeon employing the same phacoemulsification technique. A higher incidence of lens subluxation, lens repositioning, corneal edema, and elevated intraocular pressure was observed in the eyes receiving STAAR silicone implants than in the eyes receiving IOLAB PMMA implants. In addition, a YAG laser posterior capsulotomy could not be performed through several STAAR silicone RMX 1 model implants. An invasive pars plana posterior capsulotomy was necessary in these eyes. We also found that the STAAR silicone RMX 3 model implants were often pitted by the YAG laser during successful posterior capsulotomies. Despite these problems, the STAAR silicone intraocular lens group achieved corrected vision similar to the PMMA lens group.

Humans↗
PubMed1995

Endocapsular ring approach to the subluxed cataractous lens.

The surgical management of the cataract associated with extensive zonular dialysis presents a challenge for the anterior segment surgeon. In 1993, a poly(methyl methacrylate) endocapsular ring was introduced to stabilize the capsular bag. We describe the use of this endocapsular ring in phacoemulsification and intraocular lens (IOL) implantation in the capsular bag in four patients with extensive traumatic or congenital zonular dialysis. The endocapsular ring allows expansion and stabilization of the capsular bag to facilitate cortical aspiration and uncomplicated IOL implantation. With follow-up of 4 to 10 months, all IOLs have remained well centered and the patients have had excellent vision free of complications.

Aged↗
PubMed1992

Management of the subluxed crystalline lens.

There has been a traditional reluctance to remove a subluxed (ectopic) lens because of the high surgical risk. The use of closed intraocular microsurgical techniques, however, now allows greater intraoperative control with few complications. The authors present the results of subluxed lens extraction, by limbal or pars plana lensectomy, in 44 eyes of 24 patients, in which the indication for surgery was lens subluxation causing a reduction in visual acuity or uncorrectable refractive error. Visual acuity was improved in all cases after surgery, with no significant complications. Patients with reduced visual acuity secondary to ectopic lenses have a good visual prognosis after lensectomy using a closed intraocular microsurgical technique.

Adult↗
PubMed2004

[Phacoemulsification of subluxated opacified lens in pseudoexfoliation glaucoma patients, performed with the use of a capsular tension ring and iris retractors].

PURPOSE: To evaluate results of phacoemulsification of subluxated lens in patients suffering from pseudoexfoliation-related cataract and glaucoma, performed with the use of a capsular tension ring (CTR) and iris retractors and implantation of artificial intracapsular lens. PATIENTS AND METHODS: The retrospective covered 15 patients (15 eyes) at the average age of 75 years, with a subluxated, cloudy lens and pseudoexfoliation glaucoma with IV PEX. Due to poor mydriasis resulting from the course of the pseudoexfoliation syndrome, it was necessary with all the patients to apply iris retractors in order to enlarge the pupil. The opacified lens were removed by means of phacoemulsification. In order to provide additional peripheral support and to maintain the artificial lens in the central position after the surgery, a tension ring was implanted into the lenticular capsule. A foldable intraocular lens was implanted inside the capsule. RESULTS: The observation period was 12 months. The average visual acuity prior the surgery was 0.18+/-0.2, while after a year after the surgery it was 0.56+/-0.32 (p<0.001). Besides, the intraocular pressure was observed to decrease from 18.2+/-5.02 mm Hg before the surgery to 15.8+/-0.84 mmHg (p<0.001) after the surgery. The anti-glaucoma medication ratio was also reduced from 2.1 to 1.3 in the post-surgery period. Inflammatory reaction of the anterior chamber was observed in 7 eyes. CONCLUSIONS: Application of a CTR and iris retractors during a surgery of cataract in patients with subluxated opacified lens considerably facilitates the implantation procedure of an artificial lens into the capsule, and it allows to improve the visual acuity and stabilize the intraocular pressure while reducing the quantity of the applied anti-glaucoma drugs.

Aged↗
PubMed2003

Intraoperative and postoperative complications of Cionni endocapsular ring implantation.

PURPOSE: To analyze the intraoperative and postoperative complications of Cionni ring implantation in eyes with a subluxated lens or zonular weakness. SETTING: Departamento de Oftalmología, Clínica Universitaria de Navarra, Universidad de Navarra, Pamplona, Spain. METHODS: This case series comprised 7 eyes of 5 patients with a subluxated lens or zonular weakness secondary to Marfan's syndrome (n = 2), traumatic cataract (n = 2), or megalocornea (n = 1) or of unknown etiology (n = 2). An AcrySof (Alcon) foldable intraocular lens (IOL) was implanted in all eyes. A 2-eyelet Cionni ring was implanted in 1 eye and a 1-eyelet Cionni ring, in 6 eyes. The Cionni ring was secured in position with a transscleral suture knotted to the ring's hook, avoiding peripheral perforation of the capsular bag. RESULTS: In 1 eye, corectopia was inadvertently produced by passing the suture needle through the iris root; lens subluxation temporarily increased during ring rotation and implantation. However, after the transscleral suture was tightened, capsular bag centration was excellent. In the eye with megalocornea, traction from the 2 hooks tore the edge of the anterior capsule rim. The most frequent postoperative complication was posterior capsule opacification, which occurred in 5 eyes, 2 of which required a neodymium:YAG posterior capsulotomy. After 1 year, the Cionni ring continued to provide excellent stability and capsular bag and IOL positioning in all cases. CONCLUSIONS: Results indicate that Cionni ring implantation is an acceptable procedure to correct limited lens subluxation, preserves the capsular bag, and has few significant complications.

Acrylic Resins↗
PubMed1987

Pars plana technique for removal of congenital subluxated lenses in young patients.

Lensectomy with the pars plana technique was performed in 16 eyes of 11 patients (2 female, 9 male) with congenital subluxated lenses. Lens subluxation was associated with homocystinuria in 2 patients, Marfan's syndrome in 4, congenital simple ectopia lentis in 2 and without any known heredity in 3 patients. The reason for removal was in all eyes optical disturbances. Five patients were operated on both eyes. All lenses were removed with the Kløti Vitreous Stripper through the pars plana. No complications occurred. Retinal detachment was present pre-operatively in both eyes in one patient with homocystinuria. In the post-operative period, prophylactic photocoagulation and cryotherapy were performed in 7 eyes in 6 patients (6 photocoagulation and 1 cryo). The pars plana technique for removal of clear subluxated lenses in young individuals seems to be the method of choice. Complications are negligible and the method gives excellent optical results.

Adolescent↗
PubMed2001

[Phacofragmentation of dislocated lens in vitreous cavity].

OBJECTIVE: To discuss the surgical techniques and therapeutic effects of phacofragmentation of the dislocated lens in the vitreous cavity. METHODS: Phacofragmentation was performed on 23 eyes of 23 patients with dislocated lens or subluxated lens in the vitreous cavity. With high suction and moderate ultrasound, the nucleus could be emulsified. Energy and time of emulsification: 50%-60% of energy was set up and emulsification spent 43 s to 3 min 23 s (mean 1 min 57 s). The pressure of maximum vacuum aspiration was 110-120 mm Hg (1 mm Hg = 0.133 kPa). In 11 eyes, anterior chamber intraocular lens (ACIOL) was implanted. Cryoapplications and encircling procedure were also performed on one eye. RESULTS: Phacofragmentation was successful in all patients. After follow-up for 5-19 months (mean 7.2 months), the corrected visual acuity was obviously improved in the cases of ACIOL and Marfan's syndrome, with 12 patients achieving visual acuity of 0.12-0.6. The major complications were corneal edema and damage of iris. CONCLUSIONS: It is demonstrated that phacofragmentation in the central vitreous cavity is safe and fairly easy procedure without adverse effects on retina and sclera. It helps to reduce intraoperative risks of alternative methods, avoiding a large opening of the anterior chamber and hypotony of the globe.

Adult↗
PubMed1994

Hydroexpression of subluxated lenses using a glide.

During the past 8 years, 15 patients (20 eyes) underwent a variety of operations to remove a subluxated lens. In six of these eyes, a new technique, featuring an anterior chamber maintainer and a plastic glide, was used for intracapsular cataract extraction (ICCE). The results achieved in these eyes were compared with those in 8 eyes in which cryo extraction was used, in 1 in which pars plana lensectomy was used, in 4 in which aspiration of lens material and peeling of the capsule was used, and in 1 in which a viscoelastic material and spatula were used. Using the glide, the lens is extracted through a scleral tunnel incision or a limbal opening. The length of the opening is somewhat smaller than the diameter of the lens and is significantly smaller than that used in traditional ICCE. The visual outcomes achieved with these various techniques were essentially identical. The proposed technique is simple and relatively safe for these complicated cases.

Adult↗