Is there evidence for continued learning over multiple years in perimetry?
Is there evidence for continued learning over multiple years in perimetry?
复制标题
DOI：
10.1097/opx.0b013e31818b9b40
复制
发表时间：
2008-11
期刊：
影响因子：
--
通讯作者：
Johnson CA
中科院分区：
文献类型：
--
作者：
Gardiner SK;Demirel S;Johnson CA
视野检查中存在学习效应，受试者的第一次检查比后续检查更易变，平均灵敏度（MS）更低，这一点已得到充分证实。然而，研究通常通过以在临床环境中不寻常的频率测试受试者来检查这个问题。本研究旨在确定这些结论对于频率较低但临床上更现实的检测率的有效性。80例疑似或早期青光眼受试者的160只眼纳入研究。受试者每年进行一次白上白标准自动视野检查（SAP）和短波长自动视野检查（SWAP），持续8年。所有受试者在进入研究前至少接受了一次两种范式的测试。对于SAP，MS在第一年增加了0.5 dB，然后直到第5年之后才显示出显著变化（尽管预期的衰老和疾病进展的影响），之后开始下降。对于SWAP，平均眼睛的MS持续改善，直到研究的第6年。我们的研究结果似乎表明SWAP的长期学习效果，MS增加了几年。SAP也可能存在较小的长期学习效应，抵消了衰老和疾病进展的影响。在此期间，受试者视野的恶化可能被低估。
The existence of learning effects in perimetry, whereby a subject’s first test is more variable and has lower mean sensitivity (MS) than subsequent tests, is well established. However, studies have typically examined this issue by testing subjects at a frequency that would be unusual in a clinical setting. This study seeks to determine the validity of these conclusions for less frequent, yet more clinically realistic, testing rates. One hundred sixty eyes of 80 subjects with suspected or early glaucoma were included. Subjects were tested annually for 8 years using white-on-white standard automated perimetry (SAP) and short wavelength automated perimetry (SWAP). All subjects had undergone at least one test with both paradigms before entering the study. For SAP, MS increased by 0.5 dB over the first year, and then showed no significant change until after year 5 (despite expected effects of aging and disease progression), after which it started to decline. For SWAP, MS of the average eye continued to improve until year 6 of the study. Our findings seem to indicate a prolonged learning effect for SWAP, with MS increasing for several years. A smaller prolonged learning effect may also be present for SAP, counteracting the effects of aging and disease progression. Deterioration of the subject’s visual field may be underestimated within this period.