發(fā)布時(shí)間：2018-10-30 18:47

【摘要】：目的探討兒童散光度數(shù)變化對(duì)波前像差的影響,進(jìn)而評(píng)估兒童視覺質(zhì)量。方法收集就診于大連醫(yī)科大學(xué)附屬第二醫(yī)院眼科門診的7~10歲兒童,散瞳3 d,第4天行驗(yàn)光和OPD像差儀檢查,選取符合入選標(biāo)準(zhǔn)的順規(guī)散光兒童59例�；颊咭郎⒐舛却笮》譃榈蜕⒐舛冉M(1.00 D≤散光度2.00 D)、中散光度組(2.00 D≤散光度3.00 D)、高散光度組(3.00 D≤散光度4.00 D)。通過OPD檢查獲取波前像差、調(diào)制傳遞函數(shù)(modulation transfer function,MTF)和點(diǎn)擴(kuò)散函數(shù)(point spread function,PSF)等光學(xué)信息,進(jìn)而分析全眼的總高階像差、總彗差、總球差、總?cè)~草所對(duì)應(yīng)的均方根值(root mean square,RMS)和MTF曲線對(duì)應(yīng)的面積比值(area ratio,AR)及PSF曲線對(duì)應(yīng)的斯特列爾比值(strehl ratio,SR)。我們采用單因素方差分析比較三組間各高階像差所對(duì)應(yīng)的RMS值、AR值及SR值的差異。結(jié)果4 mm瞳孔直徑下,總高階像差的均方根值、總彗差的均方根值及總?cè)~草的均方根值隨著散光度的增加而增大,且三組之間差別均有統(tǒng)計(jì)學(xué)意義(均為P0.05)�？偳虿畹木礁惦S著散光度的增加而增大,但組間差別無統(tǒng)計(jì)學(xué)意義(P0.05)。MTF曲線的AR值及PSF曲線的SR值都隨著散光度增大而減小,且三組之間差別均有統(tǒng)計(jì)學(xué)意義(均為P0.05)。結(jié)論順規(guī)散光兒童散光度的變化對(duì)高階像差、MTF、PSF均有影響,順規(guī)散光的大小主要對(duì)高階像差的不對(duì)稱成分產(chǎn)生影響。
[Abstract]:Objective to investigate the influence of astigmatism on wavefront aberration and evaluate the visual quality of children. Methods A total of 59 children with conformable astigmatism were selected from the ophthalmological outpatient department of the second affiliated Hospital of Dalian Medical University who were examined by optometry and OPD aberration on the 4th day after 3 days of dilating pupil. Patients were divided into low astigmatism group (1.00D 鈮，

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