Document Detail

Postoperative astigmatism after intracapsular cataract surgery: results of a randomised controlled trial in Nepal.
MedLine Citation:
PMID:  15887713     Owner:  NLM     Status:  MEDLINE    
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.
D Nag; A Hennig; A Foster; J R Evans; D Pradhan; G J Johnson; R P Wormaid
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Indian journal of ophthalmology     Volume:  49     ISSN:  0301-4738     ISO Abbreviation:  Indian J Ophthalmol     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2005-05-12     Completed Date:  2005-06-07     Revised Date:  2008-09-03    
Medline Journal Info:
Nlm Unique ID:  0405376     Medline TA:  Indian J Ophthalmol     Country:  India    
Other Details:
Languages:  eng     Pagination:  31-5     Citation Subset:  IM    
London School of Hygiene and Tropical Medicine, London, UK.
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MeSH Terms
Anterior Eye Segment
Astigmatism / epidemiology,  etiology*,  physiopathology
Cataract Extraction / adverse effects*,  methods
Child, Preschool
Follow-Up Studies
Lens Capsule, Crystalline / surgery*
Lens Implantation, Intraocular / adverse effects,  methods
Middle Aged
Nepal / epidemiology
Postoperative Complications*
Refraction, Ocular
Visual Acuity
Comment In:
Indian J Ophthalmol. 2001 Sep;49(3):203; author reply 204   [PMID:  15887736 ]
Indian J Ophthalmol. 2001 Sep;49(3):203; author reply 204   [PMID:  15887735 ]

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