Decentration of Posterior Chamber Iol: Effects of Loop Material and Fixation Technique

1994 ◽  
Vol 4 (2) ◽  
pp. 111-114 ◽  
Author(s):  
S. Fruscella ◽  
P. Ducoli ◽  
G.L. Manni
Keyword(s):  
Prospective Study ◽  
Cataract Extraction ◽  
Posterior Chamber ◽  
Extracapsular Cataract Extraction ◽  
Fixation Technique ◽  
Iol Implantation ◽  
The Difference ◽  
A Prospective Study ◽  
Posterior Chamber Iol ◽  
Iol Fixation

A prospective study was conducted on 90 eyes undergoing extracapsular cataract extraction and posterior chamber IOL implantation. Postoperative IOL decentration was evaluated with respect to the loop material, either polypropylene (prolene) or polymethylmethacrylate (PMMA), and the IOL fixation technique, either in the capsular sac (in-the-bag) after capsulorhexis, or in the ciliary sulcus after “can-opener” capsulotomy. More decentration was observed with IOL having polypropylene loops than with those having PMMA loops (0.80 ± 0.735 mm versus 0.373 ± 0.299 mm). IOL implanted in the bag showed greater decentration than those implanted in the sulcus, but the difference was not significant. Our findings confirm the recommendation to use an IOL with PMMA loops when placing the implant in the capsular sac.

The Fate of Eyes with Anterior Chamber Intra-Ocular Lenses

1993 ◽  
Vol 3 (1) ◽  
pp. 42-46 ◽  
Author(s):  
R. David ◽  
R. Yagev ◽  
M. Shneck ◽  
D. Briscoe ◽  
E. Gilad ◽  
...  
Keyword(s):  
Macular Edema ◽  
Anterior Chamber ◽  
Cystoid Macular Edema ◽  
Corneal Edema ◽  
Visual Outcome ◽  
Cataract Extraction ◽  
Posterior Chamber ◽  
Extracapsular Cataract Extraction ◽  
Flexible Loop ◽  
Posterior Chamber Iol

A total of 143 anterior chamber (AC) intra-ocular lenses (IOL) of various designs were implanted in a five-year period and followed for 18 to 76 months. The lenses were inserted as a secondary implant after extracapsular cataract extraction (ECCE) complicated by vitrectomy, or after primary intra-capsular extraction. The complications (corneal edema, uveitis/glaucoma, extrusion/imbedding, cystoid macular edema), the final visual acuity and the need for removal of the IOL were analyzed. Only small differences were found between the different lenses but some association was found between complicated surgery (ECCE + vitrectomy) and a higher rate of complication, poorer visual outcome and more frequent need for IOL removal. Cystoid macular edema was encountered only in cases with complicated ECCE. A high percentage of other ocular pathologies was found among the cases, possibly implying that diseased eyes are more prone to surgical complications. An alternative to the AC-IOL in cases with a ruptured posterior capsule is the suture-supported posterior chamber IOL, but the flexible-loop AC-IOL may not yet be obsolete.

Fibrin Reaction after Extracapsular Cataract Extraction: A Statistical Evaluation

1993 ◽  
Vol 3 (2) ◽  
pp. 95-97 ◽  
Author(s):  
S. Baltatzis ◽  
G. Georgopoulos ◽  
P. Theodossiadis
Keyword(s):  
Statistical Evaluation ◽  
Open Angle Glaucoma ◽  
Cataract Extraction ◽  
Posterior Chamber ◽  
Extracapsular Cataract Extraction ◽  
Exfoliation Syndrome ◽  
Normal Individuals ◽  
Chi Squared ◽  
Extracapsular Cataract Surgery ◽  
Posterior Chamber Iol

As part of a retrospective sudy, 1056 eyes of 940 patients who had undergone extracapsular cataract surgery and posterior chamber IOL implantation were studied using statistical methods (chi-squared test). We studied the presence of fibrin reaction in three subgroups: diabetics without retinopathy (102 eyes), previously operated for primary open angle glaucoma “POAG” (78 eyes) and exfoliation syndrome without glaucoma (43 eyes). The results were compared for these three groups and for a group of normal individuals. The incidence of fibrin reaction was 13.7% in the diabetics, 44.8% in the group of previously operated POAG and 27.9% in the group of exfoliation syndrome without glaucoma. All the groups studied had this complication much more often than the controls (p < 0.0001). The incidence among previously operated eyes for POAG was higher than in diabetic eyes without retinopathy (p < 0.0005) and in exfoliation syndrome without glaucoma eyes (0.05 < p < 0.1). Fibrin reaction was more common in exfoliation syndrome without glaucoma than in diabetic eyes without retinopathy (p < 0.05).

Effects of 0.5% and 0.25% Apraclonidine on Postoperative Intraocular Hypertension after Cataract Extraction

1998 ◽  
Vol 8 (2) ◽  
pp. 67-70 ◽  
Author(s):  
S. Simsek ◽  
A. Demirok ◽  
T. Yasar ◽  
A. Çinal ◽  
A. Bayram ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Side Effects ◽  
Prospective Study ◽  
Cataract Extraction ◽  
Control Group ◽  
Extracapsular Cataract Extraction ◽  
Artificial Tears ◽  
Iol Implantation ◽  
The Third ◽  
Applanation Tonometer

Purpose We conducted a double-masked, prospective study to evaluate the effect of 0.5% and 0.25% apraclonidine on postoperative intraocular pressure (IOP) in patients undergoing extracapsular cataract extraction (ECCE) with intraocular lens (IOL) implantation. Methods Fifty-four patients scheduled for ECCE were randomly divided into three groups of 18. The first group received one drop of 0.50% apraclonidine topically one hour before surgery and immediately after the end of the procedure. The second group received the same regimen but with 0.25% apraclonidine. The third group received artificial tears as the control group. IOP was measured 12 h preoperatively and 6 and 24 h postoperatively. All the measurements were made using the same Goldmann applanation tonometer by the same surgeon who did not know to which group the patient belonged. Results Preoperative mean IOP was 13.66 ± 2.76 mmHg in the first group, 14.27 ± 2.24 mmHg in the second and 14.5 ± 1.34 mmHg in the control group. The differences were not significant (p=0.398). Mean IOP at the early postoperative visit (6 h) was significantly lower in the first group (17.44 ± 4.95 mmHg) than the second (21.78 ± 7.19 mmHg) and the control group (24.55 ± 5.65 mmHg) (p<0.001). Mean postoperative IOP at 24 h was again significantly lower in the first group (14.33 ± 3.75 mmHg) than the second (17.11 ± 4.16 mmHg) and the control group (19.61 ± 3.20 mmHg) (p<0.001). Conclusions Our findings indicate that topical 0.5% apraclonidine controlled early postoperative intraocular hypertension after cataract extraction without any side effects, while the 0.25% drops were not effective.

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