Grating and recognition acuities of pediatric patients.
Grating and recognition acuities of pediatric patients.
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儿科患者的光栅和识别敏锐度。
DOI：
10.1016/s0161-6420(84)34209-9
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发表时间：
1984
期刊：
影响因子：
13.7
通讯作者：
Rodier,D
中科院分区：
文献类型：
--
作者：
Mayer,DL;Fulton,AB;Rodier,D
通过优先观察（PL）获得的光栅锐度与基于眼科检查的预期不同，促使了这项研究。老年儿科患者（124 名患者；平均年龄 6.5 岁）接受了 PL 光栅测试和识别敏锐度（图片或字母）测试。平均而言，光栅敏锐度优于识别敏锐度。在患有浓密弱视或中心凹异常的患者中，发现光栅视敏度和识别视敏度之间存在很大差异。非弱视患者的视力与眼睛正常的儿童相比并没有更大的差异。光栅视敏度的弱视密度低于识别视敏度的弱视密度；然而，光栅视力对屈光性弱视和器质性弱视敏感，但对斜视性弱视不敏感。可能的解释包括患者眼部疾病的异质性、单一视力与线性视力、刺激大小和刺激的相对复杂性。这些结果可以帮助评估语言前患者的 PL 光栅敏锐度，并建议修改刺激以研究弱发育。
Acuities for gratings obtained by preferential looking (PL) that differed from expectations based upon the ophthalmologic examination prompted this study. Older pediatric patients (124 patients; mean age, 6.5 years) were tested by the PL grating test and a test of recognition acuity (pictures or letters). On the average, grating acuity was better than recognition acuity. In patients with dense amblyopia or foveal abnormalities, very large discrepancies between grating and recognition acuities were found. In nonamblyopic patients, acuities were no more discrepant than for children with normal eyes. Amblyopia was less dense by grating acuities than by recognition acuities; grating acuities were sensitive, however, to refractive and organic amblyopia but not to strabismic amblyopia. Possible explanations include the heterogeneity of patients' eye disorders, single vs. linear acuity, stimulus size and relative complexity of stimuli. These results can aid in evaluating PL grating acuities of preverbal patients, and suggest modifications of stimuli to investigate amblyogenesis.