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  • Title: The effect on visual function of Hydroview intraocular lens opacification: a cross-sectional study.
    Author: Blundell MS, Mayer EJ, Knox Cartwright NE, Hunt LP, Tole DM, Dick AD.
    Journal: Eye (Lond); 2010 Oct; 24(10):1590-8. PubMed ID: 20539315.
    Abstract:
    PURPOSE: Hydroview intraocular lenses (IOLs) have been associated with symptomatic opacification of the optic necessitating IOL exchange. Glare and misty vision have been noted as common presenting symptoms. This study's purpose was to investigate the impact of IOL opacification on objective measurements of visual function, including glare, and on vision-related quality of life. METHODS: All patients who underwent Hydroview IOL implantation at Bristol Eye Hospital between December 2000 and the end of February 2001 were invited for assessment along with patients found to have Hydroview IOL opacification in routine ophthalmic clinics. Glare, visual acuity, contrast sensitivity, visual field, and colour vision were assessed. Vision-related quality of life and subject's symptoms were determined by questionnaire. IOL opacification was assessed by slit lamp bio-microscopy and anterior segment photography. RESULTS: Data from 129 patients were analysed. Fifty subjects had opacified IOLs and 79 clear IOLs. Subjects with opacified IOLs showed dramatically higher levels of glare (adjusted mean difference of 0.63 log units 95% CI, 0.45-0.82; P<0.001) with only mildly reduced visual acuity (adjusted mean difference of 0.09 logMAR units 95% CI, 0.03-0.15; P=0.002). Opacification was associated with poorer contrast sensitivity (P<0.001), visual field (P<0.001), and with lower vision-related quality of life (P<0.001). CONCLUSIONS: This study highlights the significant impact IOL opacification has on visual performance and experience, in particular glare and consequent impact on quality of life. The study shows that to quantify accurately the effect of IOL opacification on vision glare must be assessed.
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