Merrill Kimberly, Hogue Katherine, Downes Sara, Holleschau Ann M, Kutzbach Beth R, MacDonald John T, Summers C Gail
Department of Ophthalmology, University of Minnesota, Minneapolis, MN 55455, USA.
J AAPOS. 2011 Feb;15(1):29-32. doi: 10.1016/j.jaapos.2010.12.005.
The MNREAD reading acuity (RA) charts use continuous-text reading to measure (1) RA, ie, the smallest size of print that the patient can resolve; (2) maximum reading speed (MRS); and (3) critical print size (CPS), ie, the smallest print that the patient can read with maximum speed. This project used the MNREAD charts to evaluate reading performance in children and adults with albinism to determine the smallest print size recommended to facilitate effortless reading.
A total of 63 subjects with albinism were administered the MNREAD test to determine the critical print size for effortless reading. The subjects read continuous, high-contrast text print until they could no longer discern the words. The MRS and CPS were determined with the MNREAD protocol. Presence or absence of nystagmus and strabismus was recorded. Distance visual acuity was measured with ETDRS charts.
The sample included 25 male and 38 female subjects with a median age of 16 years. Median MRS was 150 words per minute. The mean CPS was 0.84 logMAR, notably larger than the mean RA of 0.53 logMAR.
The MNREAD acuity charts can be used to determine functional reading ability and critical print size for effortless reading in individuals with albinism. The amount of enlargement in print size can be used in educational and vocational recommendations to facilitate reading.
MNREAD 阅读视力（RA）图表采用连续文本阅读来测量：（1）阅读视力，即患者能够分辨的最小印刷字体大小；（2）最大阅读速度（MRS）；以及（3）临界印刷字体大小（CPS），即患者能够以最大速度阅读的最小印刷字体大小。本项目使用 MNREAD 图表评估白化病儿童和成人的阅读表现，以确定为便于轻松阅读而推荐的最小印刷字体大小。
共 63 名白化病患者接受了 MNREAD 测试，以确定轻松阅读的临界印刷字体大小。受试者阅读连续的高对比度文本印刷内容，直到他们无法辨认单词。根据 MNREAD 方案确定 MRS 和 CPS。记录是否存在眼球震颤和斜视。使用 ETDRS 图表测量远视力。
样本包括 25 名男性和 38 名女性受试者，中位年龄为 16 岁。中位 MRS 为每分钟 150 个单词。平均 CPS 为 0.84 logMAR，明显大于平均 RA 的 0.53 logMAR。
MNREAD 视力图表可用于确定白化病患者轻松阅读的功能阅读能力和临界印刷字体大小。印刷字体大小的放大程度可用于教育和职业建议，以促进阅读。
