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  • Title: [The comparison of two methods to predict the post-operative visual acuity of cataractous patients].
    Author: Xu W, Yao K, Shentu X.
    Journal: Zhonghua Yan Ke Za Zhi; 2001 Mar; 37(2):121-4. PubMed ID: 11864406.
    Abstract:
    OBJECTIVE: To study the accurate methods to predict the post-operative visual acuity of cataractous patients with different degrees of opaque lenses. METHODS: Visual electrophysiological methods and retinometer were used to evaluate the visual function after phacoemulsification and intraocular lens implantation in 152 cases (152 eyes). The regressive analyses between the post-operative best corrected visual acuity (BCVA) and each of the following results: the pre-operative flash electroretinogram (F-ERG), flash visual evoked potentials (F-VEP) and potential visual acuity (PVA) were performed, respectively. RESULTS: More obvious linear-relationship was shown between PVA and BCVA (r = 0.654) than that between the combination of b wave's amplitude of F-ERG with wave's amplitude of F-VEP and BCVA (r = 0.528) in the patients with partial opaque lenses. Obvious linear-relationship between the combination of the F-ERG with F-VEP values and BCVA (r = 0.487) and no obvious relationship between the potential visual acuity and BCVA (r = 0.049) were shown in the patients with near complete/complete opaque lenses. CONCLUSION: Both visual electrophysiological and retinometric detection, especially the latter one, can predict the post-operative visual acuity of the patients with partial opaque lenses accurately. Visual electrophysiological detection can predict the post-operative visual acuity of cataractous patients with near complete/complete opaque lenses accurately but retinometric detection can not.
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