The comparability of estimates of retroilluminated lens opacities as judged from film-based and digital imaging.
The comparability of estimates of retroilluminated lens opacities as judged from film-based and digital imaging.
复制标题
从基于胶片和数字成像判断的逆照晶状体混浊估计值的可比性。
DOI：
10.1016/j.ajo.2004.04.068
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Jensen,Karl
中科院分区：
文献类型：
--
作者：
Klein,BarbaraEK;Klein,Ronald;Hall,EllenR;Lee,KristineE;Jensen,Karl
PURPOSENeitz film-based retroillumination cameras, the standard for documenting retroilluminated lens opacities for epidemiologic studies, are no longer produced. A digital imaging system is now available for imaging these opacities. We sought to compare gradings of images from both systems.DESIGNComparison of technique.METHODSOne hundred fourteen lenses were imaged with both systems and graded according to protocols. Concordance between the methods was compared using kappa statistics.RESULTSThere was moderate concordance for cortical opacities (κ = 0.63) and good concordance for posterior subcapsular opacities (κ = 0.83). Grades from digital images slightly underestimated the frequency and severity of cortical cataract.CONCLUSIONDigital imaging of retroilluminated lens opacities results in similar classification of the severity of opacities. It will be useful for epidemiologic studies of cortical (CC) and posterior subcapsular cataracts (PSC).
