The Experts below are selected from a list of 123 Experts worldwide ranked by ideXlab platform
Kristian Næser - One of the best experts on this subject based on the ideXlab platform.
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Morphological changes and lens position 2 1/2 years after Intracapsular Cataract Extraction with implantation of a semiflexible anterior chamber lens. A prospective re-examination.
Acta Ophthalmologica, 2009Co-Authors: Kristian Næser, Tom Eggert Hansen, Jørgen Nørrelykke NissenAbstract:Morphological changes and lens position were examined in 51 patients 25 to 38 (mean 30) months after Intracapsular Cataract Extraction (ICCE) with implantation of the semiflexible, 3M, style 70, anterior chamber lens. Morphological changes presumably associated with the ICCE proper were: iris transillumination defects (68.6%), rupture of anterior hyaloid membrane (20%), detachment of posterior vitreous (42.9%) and anterior synecchiae (13.7%). The implant-related morphological changes were caused by iris tucking (19.6%), small, mobile lenses causing endothelial disturbance (9.8%), iris-haptic adhesions and progressive ovalling of pupillary form. The present morphological changes were compared with a previously published examination of the same patients performed 4 months after surgery: 9 eyes without tissue changes around the lens feet at the previous follow-up now had iris-haptic adhesions involving from 1 to 4 lens feet. In 8 eyes the iris-haptic adhesions had progressed. Compared with the previous examination the fraction of eyes with tissue changes at the lens feet had risen from 47.1 to 64.7%, while the number of eyes with oval pupils had increased from 54.9 to 80.4%. Contact between lens haptic and iris root seems to constitute a constant stimulus for structural changes of the iris.
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Retinal detachment following Intracapsular and extracapsular Cataract Extraction A comparative, retrospective follow-up study
Acta ophthalmologica, 2009Co-Authors: Steen F. Urbak, Kristian NæserAbstract:. In a retrospective study we reviewed the postoperative incidence of retinal detachment in a consecutive series of 762 eyes operated on with Intracapsular Cataract Extraction and a consecutive series of 1351 eyes operated on with extracapsular Cataract Extraction. Follow-up time was 2 1/2 - 4 1/2 years in both series. The incidence of retinal detachment was 0.79% after Intracapsular Cataract Extraction and 0.44% after extracapsular Cataract Extraction. The difference was not statistically significant. Age below 70 years was not statistically significantly correlated to retinal detachment.
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Retinal detachment following Intracapsular Cataract Extraction. A 10-year follow-up study.
Acta ophthalmologica Scandinavica, 1998Co-Authors: Kristian Næser, Kirsten Lau Baggesen, Ellen Birthe KnudsenAbstract:Purpose: To examine the incidence of and risk factors for retinal detachment during a 10-year follow-up on Intracapsular Cataract Extraction (ICCE). Methods: Retrospective analysis of medical records of 1041 eyes operated on with ICCE in the years 1984‐86. A complete follow-up was achieved, and actuarial methods were used in the risk assessment. The risk time averaged 82 months. Results: Twenty-two (2.1%) eyes developed retinal detachment; half of the cases occurred during the first postoperative year, but new cases emerged throughout the period. The cumulative incidence of RD amounted to 2.8%; 95% confidence interval: 1.5‐4.2%. Multivariate Cox regression analysis identified younger age at surgery (relative risk for each 10-year increase in age‰0.6; 95% confidence interval: 0.39‐0.95) and male gender (relative risk‰2.5; 95% confidence interval 1.04‐6.04) as significant risk factors for RD. Eleven eyes, 50% of eyes with RD and 1% of the total number of eyes, lost useful vision in spite of retinal surgery. Conclusion: Even though the risk for both RD and an unfavourable result following retinal surgery may be smaller using contemporary surgical techniques, the present study indicates a substantial morbidity following Cataract surgery, when a sufficiently long observation period is considered.
Michael Stur - One of the best experts on this subject based on the ideXlab platform.
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Changes of the corneal endothelium following Intracapsular Cataract Extraction with implantation of semiflexible anterior chamber lenses. I. Results of the early post-operative period.
Acta Ophthalmologica, 2009Co-Authors: Michael Stur, Günther Grabner, Wolfgang DordaAbstract:A consecutive group of 103 patients with senile Cataract underwent Intracapsular Cataract Extraction and implantation of a semiflexible anterior chamber lens. After 6 month of follow-up, there was an average decrease of 20% +/- 15% in central corneal endothelial cell density and an average vertical disparity of 32% +/- 20% between central and superior endothelial areas. The endothelial cell loss was not correlated with pre-operative cell density. There was a positive correlation between age and cell loss and between age and vertical disparity. Findings in eyes with cornea guttata did not differ significantly from those without guttata. Anterior vitrectomy did not increase endothelial cell loss significantly. Maintenance of a deep anterior chamber by pre-operative oculopression or by instillation of Na-hyaluranate had no significantly different effect on the corneal endothelial cell loss.
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Long-term changes of the corneal endothelium following Intracapsular Cataract Extraction with implantation of open-loop anterior chamber lenses.
Acta Ophthalmologica, 2009Co-Authors: Michael SturAbstract:Abstract. The central corneal endothelium of a conse- cutive group of 158 patients with senile Cataract was examined before Intracapsular Cataract Extraction with implantation of an open-loop anterior chamber lens and 6, 12 and 48 months after surgery. Corneal endothelial morphometry was performed using an automated digital image analysis system. After 6 months of follow-up, there was an average loss of 10.8% in central corneal endothe- lial cell density, which increased to 14.8% after 12 months and 18.8% after 48 months. The early post-operative en- dothelial cell loss was correlated significantly with a de- crease of cell pattern stability and polymegathism (P< 0.0001). There was also a significant correlation be- tween the continuous post-operative cell loss and the simultaneous changes of pattern stability and polymega- thism and the age at the time of surgery (P < 0.05). Key words: corneal endothelium - specular microscopy - digital image analysis - Cataract Extraction
Kirsten Lau Baggesen - One of the best experts on this subject based on the ideXlab platform.
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Retinal detachment following Intracapsular Cataract Extraction.
Acta ophthalmologica, 2009Co-Authors: Knud Erik Sørensen, Kirsten Lau BaggesenAbstract:A retrospective investigation of aphakic retinal detachments following Intracapsular Cataract Extraction during a 12-year period was performed. A total of 8350 eyes had Intracapsular Cataract Extraction in the study period and 118 eyes developed aphakic retinal detachment. The occurrence of retinal detachment is related to age, sex, intraoperative complications, myopia, hyperopia, and pseudophakia. Age and myopia were significantly associated with aphakic retinal detachment. Previous aphakic retinal detachment in the one eye was a strong predictor for the other eye.
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Persisting corneal oedema following Intracapsular Cataract Extraction
Acta ophthalmologica Scandinavica, 2009Co-Authors: Kirsten Lau Baggesen, Niels EhlersAbstract:. Purpose: The purpose of this study was to reveal the frequency of persisting corneal oedema following Intracapsular Cataract Extraction and at the same time to examine whether the survival rate after penetrating keratoplasty due to this diagnosis differs from the survival rate following penetrating keratoplasty due to primary Fuchs' endothelial dystrophy. Methods and Material: A series of 2455 eyes underwent Intracapsular Cataract Extraction between January 1, 1986 and December 31, 1988, at the Department of Ophthalmology, Arhus University Hospital. The medical files were examined to study the frequency of persisting corneal oedema. Patients with persisting corneal oedema were offered penetrating keratoplasty and the survival rate following this procedure was calculated. Results: The frequency of pseudophakic persisting corneal oedema was 5.3% in the group of patients who underwent Intracapsular Cataract Extraction. The survival of the following corneal transplantation was 54% after 2 years of follow-up. This is a low survival rate compared to the survival rate in primary Fuchs' endothelial dystrophy, but there is a similarity to this disease in a development of a slowly progressive oedema in 17% compared to 13% in primary Fuchs' endothelial dystrophy. Conclusion: 5.3% of a group of patients who underwent Intracapsular Cataract Extraction developed persisting corneal oedema within a 5 to 7-year follow-up period. When these patients underwent penetrating keratoplasty the survival rate of the graft was 54% after 2 years of follow-up.
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Retinal detachment following Intracapsular Cataract Extraction. A 10-year follow-up study.
Acta ophthalmologica Scandinavica, 1998Co-Authors: Kristian Næser, Kirsten Lau Baggesen, Ellen Birthe KnudsenAbstract:Purpose: To examine the incidence of and risk factors for retinal detachment during a 10-year follow-up on Intracapsular Cataract Extraction (ICCE). Methods: Retrospective analysis of medical records of 1041 eyes operated on with ICCE in the years 1984‐86. A complete follow-up was achieved, and actuarial methods were used in the risk assessment. The risk time averaged 82 months. Results: Twenty-two (2.1%) eyes developed retinal detachment; half of the cases occurred during the first postoperative year, but new cases emerged throughout the period. The cumulative incidence of RD amounted to 2.8%; 95% confidence interval: 1.5‐4.2%. Multivariate Cox regression analysis identified younger age at surgery (relative risk for each 10-year increase in age‰0.6; 95% confidence interval: 0.39‐0.95) and male gender (relative risk‰2.5; 95% confidence interval 1.04‐6.04) as significant risk factors for RD. Eleven eyes, 50% of eyes with RD and 1% of the total number of eyes, lost useful vision in spite of retinal surgery. Conclusion: Even though the risk for both RD and an unfavourable result following retinal surgery may be smaller using contemporary surgical techniques, the present study indicates a substantial morbidity following Cataract surgery, when a sufficiently long observation period is considered.
Wolfgang Dorda - One of the best experts on this subject based on the ideXlab platform.
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Changes of the corneal endothelium following Intracapsular Cataract Extraction with implantation of semiflexible anterior chamber lenses. I. Results of the early post-operative period.
Acta Ophthalmologica, 2009Co-Authors: Michael Stur, Günther Grabner, Wolfgang DordaAbstract:A consecutive group of 103 patients with senile Cataract underwent Intracapsular Cataract Extraction and implantation of a semiflexible anterior chamber lens. After 6 month of follow-up, there was an average decrease of 20% +/- 15% in central corneal endothelial cell density and an average vertical disparity of 32% +/- 20% between central and superior endothelial areas. The endothelial cell loss was not correlated with pre-operative cell density. There was a positive correlation between age and cell loss and between age and vertical disparity. Findings in eyes with cornea guttata did not differ significantly from those without guttata. Anterior vitrectomy did not increase endothelial cell loss significantly. Maintenance of a deep anterior chamber by pre-operative oculopression or by instillation of Na-hyaluranate had no significantly different effect on the corneal endothelial cell loss.
Gordon J Johnson - One of the best experts on this subject based on the ideXlab platform.
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Postoperative Astigmatism after Intracapsular Cataract Surgery: Results of a Randomised Controlled Trial in Nepal
Indian journal of ophthalmology, 2001Co-Authors: Nag D, A Hennig, Allen Foster, Evans, Pradhan D, Gordon J JohnsonAbstract:PURPOSE: Postoperative astigmatism following Intracapsular Cataract Extraction with or without anterior chamber intraocular lens implantation is reported as an outcome from a randomised controlled trial. METHODS: Five hundred and two of 1002 eyes randomised to Intracapsular Cataract Extraction with anterior chamber intraocular lens (ICCE/AC IOL) and 417 of 998 eyes to Intracapsular Cataract Extraction with aphakic spectacles (ICCE/AS) were seen for objective refraction one year after surgery. The prevalence and axis of astigmatism were evaluated using univariate analysis. Logistic regression was used to compare the postoperative astigmatism between the groups. RESULTS: Acceptable astigmatism (-0.5 to 0.0 DCyl) in the AC IOL group was found in 60 (12.0%) patients (95% CI 9.1%-14.9%) and in the aphakic spectacles group (AS) in 69 (16.5%) patients (95% CI 12.9%-20.1%), moderate astigmatism (-1.0 to-1.5 DCyl) was found in 153 (30.4%) patients (95% CI 26.4-34.6%) in ACIOL group and in 288 (69.1%) patients (95% CI 64.6%-73.6%) in AS group; and large astigmatism (-2.0 to - 8.0 D Cyl) was found in 289 (57.6%) patients (95% CI 53.1%-61.6%) in ACIOL group and in 60 (14.4%) patients (95% CI 11.0% 17.8%) in AS group. Large astigmatism was approximately four times more common in the ICCE/AC IOL group compared to ICCE/AS group. In both groups, most patients had "against-the-rule" astigmatism, 446 (88.8%) (95%CI 86.0%-91.6%) in AC IOL group and 348 (83.5%) (95%CI 79.9%-87.1%) in AS group. CONCLUSION: Astigmatism is common after Intracapsular Cataract Extraction. Insertion of an anterior chamber IOL increases the risk of astigmatism.
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is anterior chamber lens implantation after Intracapsular Cataract Extraction safe in rural black patients in africa a pilot study in kwazulu natal south africa
Eye, 1998Co-Authors: C D Cook, Jennifer R Evans, Gordon J JohnsonAbstract:Purpose There are an estimated 16 million people blind from Cataract world-wide. In many areas the routine operation is Intracapsular Cataract Extraction (ICCE). The role of modern anterior chamber (AC) intraocular lenses (IOLs) is being explored, and they have been shown to be safe and successful in Asia. Are they equally safe in rural black African populations? Methods One hundred black patients aged 50 years and over who attended Edendale Hospital were enrolled in a pilot study of insertion of AC IOLs after ICCE. They were followed up for 6 months. Results With financial remuneration, the follow-up rate at 8 weeks increased from the usual 30% to 72%. At 6 months, 67% of eyes achieved a corrected visual acuity of 6/18 or better. Thirty per cent had persistent uveitis, 16% had peripheral anterior synechiae beyond the points of haptic contact, and 5% had an intraocular pressure greater than 21 mmHg. Conclusions A randomised trial comparing ICCE with AC IOL and extracapsular Cataract Extraction with posterior chamber IOL is probably not justified at this time in this population. However, there may be wide variations in the reaction of the eyes of different African ethnic groups to IOLs. In view of the successful use of AC IOLs in Asian eyes, further pilot studies of AC IOLs may be warranted in other parts of Africa where ICCE is the routine procedure.
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Is anterior chamber lens implantation after Intracapsular Cataract Extraction safe in rural black patients in Africa? A pilot study in KwaZulu-Natal, South Africa.
Eye (London England), 1998Co-Authors: C D Cook, Jennifer R Evans, Gordon J JohnsonAbstract:There are an estimated 16 million people blind from Cataract world-wide. In many areas the routine operation is Intracapsular Cataract Extraction (ICCE). The role of modern anterior chamber (AC) intraocular lenses (IOLs) is being explored, and they have been shown to be safe and successful in Asia. Are they equally safe in rural black African populations? One hundred black patients aged 50 years and over who attended Edendale Hospital were enrolled in a pilot study of insertion of AC IOLs after ICCE. They were followed up for 6 months. With financial remuneration, the follow-up rate at 8 weeks increased from the usual 30% to 72%. At 6 months, 67% of eyes achieved a correlated visual acuity of 6/18 or better. Thirty per cent had persistent uveitis, 16% had peripheral anterior synechiae beyond the points of haptic contact, and 5% had an intraocular pressure greater than 21 mmHg. A randomised trial comparing ICCE with AC IOL and extracapsular Cataract Extraction with posterior chamber IOL is probably not justified at this time in this population. However, there may be wide variations in the reaction of the eyes of different African ethnic groups to IOLs. In view of the successful use of AC IOLs in Asian eyes, further pilot studies of AC IOLs may be warranted in other parts of Africa where ICCE is the routine procedure.
