Does ethnicity influence the short-term adaptation to first reading correction?
Does ethnicity influence the short-term adaptation to first reading correction?
复制标题
种族是否会影响对初读纠正的短期适应？
DOI：
10.1097/opx.0b013e318251d2f2
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Schor,CliftonM
中科院分区：
文献类型：
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作者：
Vedamurthy,Indu;Lin,Meng;Tong,Jianliang;Yeh,ThaoN;Graham,AndrewD;Green,Harry;Wang,ShiyinLinda;Sabharwal,Amrita;Schor,CliftonM
目的：调节幅度 (AA) 的种族差异并不罕见。由于短期佩戴第一副近用眼镜，调节能力可能会降低。种族是否对这种适应的程度有影响尚不清楚。我们研究了首次佩戴近距眼镜对华裔和白种人的早期老花眼中 AA 变化和会聚交联相互作用的影响。方法。41 名年龄在 36 至 44 岁之间的受试者（22 名白种人和 19 名中国人）完成了这项研究。在使用单视阅读眼镜进行近距离任务之前和之后的 2 个月内以及停止佩戴近距离眼镜后 2 个月内再次测量调节刺激反应函数、AA 以及 AC/A 和 CA/C 比率。结果。佩戴阅读眼镜 2 个月后，调节刺激反应斜率以及 AC/A 和 CA/C 比率保持不变，与种族无关。调节偏差减少，但辐散偏差没有减少（p < 0.05）。调节近点向远端移动，导致 AA 较基线平均下降 0.52 D (p< 0.05)。停用老花镜 2 个月后恢复到接近基线值。基于种族的差异并不显着。基线 AA 与年龄的关系图显示，样本中中国人的斜率比白人受试者的斜率更陡。结论：通过适应和交叉链接相互作用对短期第一阅读眼镜的适应模式不受种族影响。
Purpose.Ethnic variations in accommodative amplitude (AA) are not uncommon. Accommodation can become reduced in response to short-term wear of first near spectacles. Whether ethnicity has an influence on the magnitude of this adaptation is not well understood. We investigated the impact of first near spectacles on changes in AA and on convergence cross-link interactions in incipient presbyopes of Chinese and Caucasian ethnicities.Methods.Forty-one subjects (22 Caucasians and 19 Chinese) aged 36 to 44 years completed the study. Accommodative stimulus response function, AA, and AC/A and CA/C ratios were measured before and after single vision reading spectacles were used for near tasks over a 2-month period and then again 2 months after discontinuing near spectacle wear.Results.After wearing reading spectacles for 2 months, the accommodative stimulus response slopes and AC/A and CA/C ratios remained invariant irrespective of ethnicity. The accommodative, but not vergence, bias decreased (p< 0.05). The nearpoint of accommodation shifted distally producing an average decrease in AA of 0.52 D from baseline (p< 0.05). Recovery to near baseline values occurred after discontinuing the reading glasses for 2 months. Differences based on ethnicity were not significant. The baseline AA vs. age plots showed steeper slopes for Chinese than the Caucasian subjects in the sample.Conclusions.The pattern of adaptation by accommodation and cross-link interactions to short-term first reading spectacles is not influenced by ethnicity.