Acosta-Rojas E Ruthy, Comas Mercè, Sala Maria, Castells Xavier
Evaluation and Clinical Epidemiology Department, Municipal Institute of Health Care (IMAS) and Health Services Research Unit, Municipal Institute of Medical Research (IMIM-IMAS), Barcelona, Spain.
Ophthalmic Epidemiol. 2006 Oct;13(5):299-307. doi: 10.1080/09286580600694464.
To evaluate the association between visual impairment (visual acuity, contrast sensitivity, stereopsis) and patient-reported visual disability at different stages of cataract surgery.
A cohort of 104 patients aged 60 years and over with bilateral cataract was assessed preoperatively, after first-eye surgery (monocular pseudophakia) and after second-eye surgery (binocular pseudophakia). Partial correlation coefficients (PCC) and linear regression models were calculated.
In patients with bilateral cataracts, visual disability was associated with visual acuity (PCC = -0.30) and, to a lesser extent, with contrast sensitivity (PCC = 0.16) and stereopsis (PCC = -0.09). In monocular and binocular pseudophakia, visual disability was more strongly associated with stereopsis (PCC = -0.26 monocular and -0.51 binocular) and contrast sensitivity (PCC = 0.18 monocular and 0.34 binocular) than with visual acuity (PCC = -0.18 monocular and -0.18 binocular). Visual acuity, contrast sensitivity and stereopsis accounted for between 17% and 42% of variance in visual disability.
The association of visual impairment with patient-reported visual disability differed at each stage of cataract surgery. Measuring other forms of visual impairment independently from visual acuity, such as contrast sensitivity or stereopsis, could be important in evaluating both needs and outcomes in cataract surgery. More comprehensive assessment of the impact of cataract on patients should include measurement of both visual impairment and visual disability.
评估在白内障手术不同阶段，视力损害（视力、对比敏感度、立体视）与患者报告的视觉残疾之间的关联。
对104例60岁及以上的双侧白内障患者在术前、第一眼手术后（单眼人工晶状体眼）和第二眼手术后（双眼人工晶状体眼）进行评估。计算偏相关系数（PCC）和线性回归模型。
在双侧白内障患者中，视觉残疾与视力相关（PCC = -0.30），在较小程度上与对比敏感度相关（PCC = 0.16）和立体视相关（PCC = -0.09）。在单眼和双眼人工晶状体眼中，视觉残疾与立体视（单眼PCC = -0.26，双眼PCC = -0.51）和对比敏感度（单眼PCC = 0.18，双眼PCC = 0.34）的关联比与视力（单眼PCC = -0.18，双眼PCC = -0.18）更强。视力、对比敏感度和立体视占视觉残疾方差的17%至42%。
在白内障手术的每个阶段，视力损害与患者报告的视觉残疾之间的关联有所不同。独立于视力测量其他形式的视力损害，如对比敏感度或立体视，对于评估白内障手术的需求和结果可能很重要。对白内障对患者影响的更全面评估应包括视力损害和视觉残疾的测量。
