PURPOSE To evaluate the defocus curves of 4 presbyopia-correcting intraocular lenses (IOLs). SETTING Department of Ophthalmology, Goethe University, Frankfurt, Germany. DESIGN Prospective case series. METHODS Patients included in the study had bilateral surgery with implantation of diffractive panfocal, diffractive trifocal, segmental refractive (SegRef), or extended-depth-of-focus (EDOF) presbyopia-correcting IOLs. The uncorrected (UDVA) and corrected (CDVA) distance visual acuities, uncorrected intermediate and near visual acuities, distance-corrected intermediate (DCIVA) and near (DCNVA) visual acuities, defocus curve, and spectacle independence were measured. RESULTS The UDVA and CDVA were not significantly different between groups (P > .05); however, the EDOF group had worse near CDVA (P < .001). The trifocal and EDOF groups showed better DCIVA than the panfocal and SegRef group at 80 cm (P < .001); the EDOF and panfocal groups had comparable DCIVA at 60 cm (P > .05). Defocus curves showed no significant between-group differences from 4 m to 2 m (P > .05). The EDOF group had better visual acuity from 1 m to 67 cm than the trifocal and SegRef groups and better visual acuity than the panfocal group at 1 m (P > .05). Compared with the other IOLs, the panfocal IOL yielded significantly better visual acuity at 50 cm (P < .001) and the EDOF IOL worse visual acuity at 40 cm (P < .01). There was a significant difference in spectacle independence between the panfocal group and EDOF group (P < .05) but no difference between the other groups. CONCLUSIONS The 4 IOLs provided equally good CDVA. The EDOF IOL yielded slightly better DCIVA but worse DCNVA than the other IOLs. Only the panfocal IOL gave better DCIVA at 50 cm.

中文翻译：

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四种老花眼矫正IOL设计的散焦曲线：衍射全焦点，三焦点衍射，部分屈光和扩展景深。

目的评估4个老花眼矫正人工晶状体（IOL）的散焦曲线。设置地点：德国法兰克福歌德大学眼科。设计预期案例系列。方法本研究纳入的患者进行了双侧手术，分别植入了衍射全焦，衍射三焦，节段性屈光（SegRef）或扩大景深（EDOF）的老花眼矫正IOL。测量了未矫正（UDVA）和矫正（CDVA）的远视力，未矫正的中间和近视力，距离矫正的中间（DCIVA）和近视（DCNVA）视力，散焦曲线和眼镜独立性。结果两组间的UDVA和CDVA无显着差异（P> .05）；两组之间的差异无统计学意义（P> .05）。但是，EDOF组的CDVA较差（P <.001）。三焦点组和EDOF组在80 cm处显示出比全焦点组和SegRef组更好的DCIVA（P <.001）。EDOF组和全焦点组在60 cm处具有可比的DCIVA（P> .05）。离焦曲线显示，从4 m到2 m，组间差异无显着性（P> .05）。EDOF组在1 m至67 cm处的视敏度比三焦点和SegRef组好，在1 m处的视觉灵敏度比全焦点组好（P> .05）。与其他IOL相比，全焦点IOL在50 cm处产生明显更好的视力（P <.001），而EDOF IOL在40 cm处产生较差的视力（P <.01）。全焦点组和EDOF组之间的眼镜独立性存在显着差异（P <.05），而其他组之间没有差异。结论4种IOL提供了同样好的CDVA。EDOF IOL比其他IOL产生的DCIVA稍好，但DCNVA差。仅全焦IOL在50 cm处具有更好的DCIVA。