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Results for “Lens Subluxation”

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PubMed1983

Anterior chamber lens subluxation through a basal peripheral iridectomy.

The superior supporting footplate of the Tennant-Anchor anterior chamber lens can subluxate through a basal peripheral iridectomy. In each of the three cases reported herein, the implant migrated superiorly along the ciliary body pars plana. In two cases, the lens implant was stabilized by adhesions of the superior supporting footplate to the ciliary body. In the third case, lens movement (pseudophakodonesis) caused the inferior lens footplate to rub against the corneal endothelium, producing secondary iridocyclitis and cystoid macular edema which required intraocular lens removal and exchange. This complication may be prevented by performing a mid-peripheral iridectomy or iridotomy rather than a large basal iridectomy.

Aged↗
PubMed1997

[Posterior chamber implants with scleral fixation in patients with lens subluxation or luxation].

PURPOSE: To present the operative technique and results of scleral fixation posterior chamber IOL implantations in eyes with lens dislocation. MATERIAL AND METHODS: Pars plana vitrectomy technique was combined with the outside-in method for scleral fixation of PC IOL. Forty eyes of 36 patients were operated on between December 1994 and December 1996. Time of observation ranged from 1 to 24 months (mean 10.3 months). RESULTS: The best corrected postoperative visual acuity was between 6/6 and 6/8 in 32 eyes, between 6/12 and 6/18 in 5, and between 6/24 and 1/60 in 3 eyes. Preoperative ocular hypertension was normalized in all 9 cases, although topical glaucoma therapy was necessary in 5 eyes. In one myopic patient retinal detachment occurred postoperatively. We observed one case of IOL decentration. No other severe complications were found. CONCLUSION: Pars plana vitrectomy for the dislocated lens removal may be combined with simultaneous scleral fixation IOL implantation. The procedure is safe and gives good visual rehabilitation.

Adult↗
PubMed2000

[Secondary glaucoma in patients with lens subluxation or luxation].

AIM: To estimate the frequency of secondary glaucoma appearance and the influence of surgical treatment on intraocular pressure (IOP) in patients with posterior lens dislocation. MATERIAL AND METHODS: The study concerned 152 patients (57 females and 95 males, age range: 19 to 91 years, mean--58 years). Secondary glaucoma was found in 62 patients (41%). Trauma was the cause of lens dislocation in 81% of these cases, while it was the cause in only 69% of cases in the whole material. Pars plana vitrectomy with limbal intracapsular lens extraction or lentectomy were performed in all cases. In 24 cases perfluorocarbon liquid was used. Scleral fixation PC IOLs were implanted in 85 eyes (group A), AC IOLs in 27 eyes (group B), and 40 eyes remained aphakic (group C). The follow-up time ranged from 6 months to 5 years, mean 22 months. RESULTS: Raised IOP was found preoperatively in 46 cases (30.3%). It was raised in 21 (24.7%) eyes in group A (24-60 mm Hg, mean 37.1 mm Hg), and it has normalized postoperatively in 14 eyes, while topical medication was necessary in 7 remaining cases. In group B raised IOP (26-60 mm Hg, mean 41.4 mm Hg) was found preoperatively in 8 (29.6%) eyes. It has normalized postoperatively in 5 eyes, while topical medication was necessary in 3 eyes. The respective values in group C were: 17 (42.5%), 24-80 mm Hg, mean 43.2 mm Hg. In 7 eyes IOP was normal after surgery, 10 patients required topical treatment, and in 3 of these cases trabeculectomy had to be performed. In 16 eyes with normal preoperative IOP it has raised postoperatively in different periods of time (from 1 week to 6 months). CONCLUSIONS: Secondary glaucoma is a frequent complication of the posterior lens dislocation, and it is more often related with traumatic cases. The dislocated lens removal with the use of vitrectomy causes IOP normalization in most of the cases. The periodical examination of IOP is necessary after the dislocated lens removal also in cases with normal preoperative IOP, because secondary glaucoma may appear in different time after surgery.

Adult↗
PubMed1993

[Liquid perfluorocarbons in surgery for lens subluxation].

Liquid perfluocarbons (PFC) with a high specific weight and low viscosity were used to remove dislocated lenses from the vitreous body cavity in four patients. In three patients dislocation of the lens with the firm nucleus into the vitreous body cavity occurred following severe contusion, in one female patient luxation of a posterior chamber lens occurred after implantation. After pars plana vitrectomy the liquid PFC lifted the dislocated lens from the bottom of the eye beyond the pupil and from there the lens was removed by means of a cryoprobe and the posterior chamber artificial lens was removed by means of forceps. Liquid PFC are a simple and sparing tool for removal of lenses with a firm nucleus and of implanted lenses from the vitreous body cavity. They reduce manipulation with instruments inside the vitreous body cavity to a minimum. Their use is the operation of choice. The high price of PFC is outweighed by the minimal risk of surgical and postoperative retinal complications.

Adult↗
PubMed2001

Intraocular lens subluxation in a patient with facial atopic dermatitis.

A 66-year-old Japanese man presented with subluxation of a posterior chamber intraocular lens (IOL) caused by a rupture of part of Zinn's zonule but no retinal break 2 years after phacoemulsification with IOL implantation. He had a history of atopic dermatitis since infancy. This case presents a rare ocular complication of scratching and rubbing the face and eyelids because of itching related to atopic dermatitis.

Aged↗
PubMed1984

Lens subluxation in homocystinuria. A case report.

A 6-year-old girl had bilaterally subluxated lenses and liver and platelet dysfunctions. A cyanide-nitroprusside test of the urine was positive. Serum and urinary levels of methionine and homocystine were high. Cystathionine synthetase activity in the cultured skin fibroblasts was negligible. Pyridoxine, 1000 mg/day orally, normalized the serum and urinary methionine and homocystine levels and the liver and platelet functions. Episodes of pupillary block glaucoma prompted lens extraction. The subluxated lenses were extracted under general anaesthesia after administration of pyridoxine and dextran to avoid thrombosis. A good result without serious complications was obtained. We believe that homocystinuria should not be considered a contra-indication to general anaesthesia. In the pyridoxine-responsive patient general anaesthesia is not hazardous if platelet function can be controlled by the vitamin.

Anesthesia, General↗