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首页> 外文期刊>Documenta Ophthalmologica: Advances in Ophthalmology >Can VEP-based acuity estimates in one eye be improved by applying knowledge from the other eye?
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Can VEP-based acuity estimates in one eye be improved by applying knowledge from the other eye?

机译：通过从另一只眼睛施加知识来改善一只眼睛的VEP基敏锐度估计？

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Purpose It is desirable to make VEP-based acuity estimates match standard subjective acuity numerically, as the latter is familiar to ophthalmologists and optometrists. This is achieved by applying an empirical conversion factor, and previous studies found the resulting values to be within +/- 1 octave of subjective acuity. This leaves room for improvement. In the present study, we tested for the case of a monocular acuity deficit whether the known difference between subjective and objective acuity in the trusted fellow eye can be used to get a more precise objective estimate in the eye of which the acuity is to be estimated. In other words, we tested whether it would make sense to determine a patient-specific conversion factor. Methods In 19 subjects, we obtained monocular objective and subjective acuity estimates with both eyes. Normal vision and artificially degraded vision were tested. Subjective acuity was taken as the veridical value. We computed the differences between objective and subjective acuity and reasoned that if these were correlated between eyes and acuity levels, the valid information from the trusted healthy eye could be used to improve the precision of the acuity estimate in the other, potentially impaired, eye. Results The difference between objective and subjective acuity values was neither correlated significantly between eyes, nor was it correlated significantly between acuity levels. Conclusions Knowledge about the discrepancy between objective and subjective acuity values in one eye does not help improving the accuracy of acuity estimates in the other eye. The lack of a significant correlation between eyes even at the same acuity level suggests that a major part of the discrepancies between subjective acuity and VEP-based acuity is not the result of factors that would equally apply to both eyes, such as cortical morphology.
机译：目的，希望使VEP的敏锐度估计在数值上匹配标准主观敏感性，因为后者对眼科医生和验光师熟悉。这是通过应用经验转换因子来实现的，并且之前的研究发现产生的值是主观敏锐度的+/- 1个八度音程内。这留下了改进的空间。在本研究中，我们测试了单眼敏锐度缺陷的情况，无论是可信的同伴在可信的同源中的主观和目标敏锐度之间的已知差异是否可用于在估计敏锐度的眼睛中获得更精确的客观估计。换句话说，我们测试了确定患者特定的转换因子是否有意义。方法在19个受试者中，我们用双眼获得单眼目标和主观敏锐度估计。测试正常视觉和人工降解的视觉。主观敏锐度被视为明显的价值。我们计算了客观和主观敏感之间的差异，并推理，如果这些是眼睛和敏锐度水平之间的相关性，可以使用来自可信健康眼睛的有效信息来改善敏感性估计的精度，可能受损的眼睛。结果眼睛之间的目标和主观敏锐值之间的差异既不明显，敏锐度水平之间也不显着相关。结论关于一只眼中目标和主观敏锐值之间的差异的知识并没有帮助提高对方敏锐度估计的准确性。即使在相同的敏锐度水平上也缺乏眼睛之间的显着相关性表明，主观敏锐度和基于VEP的敏感性之间的差异的主要部分并不是因子同样适用于皮质形态的因素的结果。

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