目的：评价电子阅读器增加阅读速度的能力。

　　方法：患者规定阅读相同版本及字体的报纸、印制本及iPad。检测增加的放大率，iPad和Kindle对比。

　　结果：读印制本快于读报纸(P=0.02)，在iPad上阅读快于印制本和报纸(P<0.001)。较低的视觉敏感度与较慢的阅读速度相关。iPad的字体增大到18号时，患者的阅读速度增加(P<0.001)。对比Kindle的12号字和18号字，iPad的12号字可以提高阅读速度(P<0.001)。

　　结论：对于视力减退的患者，背照设备具有显著优势。

　　PO280 Electronic Reading Devices Increase Reading Speed and Comfort in Patients With Moderate Vision Loss

　　Purpose: To evaluate the ability of electronic reading devices to enhance reading speed.

　　Methods: Patients were assigned newspaper, print, and iPad versions of text with similar font size to read. Increased magnification was tested; iPad and Kindle were compared.

　　Results: Printed material was read more quickly than newspaper (P = .02), but iPad was read more quickly than either newspaper or print (P < .001). Poor visual acuity was correlated with slower reading speed. Patients’ reading speed increased on the iPad when font was magnified to 18 point (P < .001). The iPad 12 point resulted in improved reading speed when compared to the Kindle at 12 point and at 18 point (P < .001).

　　Conclusion: Back-illuminated devices may offer a significant advantage to patients with reduced visual acuity.