The E optotype on the chart had 3 limbs of equal length.A regular geometric progression of optotype sizes and distribution was employed to arrange 14 lines with 4 optotypes on each line.
采用三划等长
E形视
，视大小及排列采用均匀几何增率，每行视数为4个，共14行，每两行视变化进率为拶而。
词条纠错
X
n. (视力
)试视力字体
)试视力字体声明：以例句、词性
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相似单词
optometer, optometrist, optometry, optophone, optotransistor, optotype, OPTRAC, optron, optronics, opulence,
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