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dc.contributor.authorPesudovs, Konrad
dc.contributor.authorElliott, David B
dc.date.accessioned2006-09-26
dc.date.available2006-09-26
dc.date.issued2003-08
dc.identifier.citationK Pesudovs and DB Elliott 2003. Refractive error changes in cortical, nuclear, and posterior subcapsular cataracts. 'British Journal of Ophthalmology', August, Vol 87, No 8, 964-7en
dc.identifier.issn0007-1161
dc.identifier.urihttp://hdl.handle.net/2328/1296
dc.description.abstractAIMS: To determine the effect of the three main morphological types of cataract on refractive error. METHODS: Data were prospectively collected from 77 subjects (age 67 (SD 8) years) with one morphological type of cataract. 34 had cortical, 21 had nuclear, and 21 had posterior subcapsular cataract. 22 subjects with clear lenses (60 (7) years) were recruited as controls. The spherical equivalent and astigmatic vector change between spectacle correction and optimal refraction were calculated. RESULTS: The cortical cataract group showed a significant astigmatic change of 0.71 (0.67) D (mean (1 SD)) compared to the control group (0.24 (0.20) D), with 24% outside the 95% confidence limit (0.63 D). The nuclear cataract group showed a significant myopic shift of -0.38 (0.60) D compared to the control group (+0.02 (0.21) D), with 52% beyond the minus 95% confidence limit (-0.39 D). CONCLUSION: A quarter of subjects with cortical cataract showed larger changes in astigmatism than subjects with clear lenses. This is probably because of the localised refractive index changes along cortical spoke opacities within the pupillary area. The well known myopic shift of nuclear cataract was also demonstrated.en
dc.format.extent261690 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherBMJ Publishing Group - http://bjo.bmjjournals.com/en
dc.subjectAnalysis of Varianceen
dc.subjectAstigmatismen
dc.subjectCataracten
dc.subjectLens Cortex, Crystallineen
dc.subjectLens Nucleus, Crystallineen
dc.subjectMyopiaen
dc.subjectRefractive Errorsen
dc.subject.otherAustralian Standard Research Classification 321016 Ophthalmology and Vision Scienceen
dc.titleRefractive error changes in cortical, nuclear, and posterior subcapsular cataractsen
dc.typeArticleen


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