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Vision function of pseudophakic eyes with posterior capsular opacification under different speed and spatial frequency

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Abstract

Purpose

To investigate the characteristics of dynamic visual acuity (DVA) and contrast sensitivity (CS) in pseudophakic patients with posterior capsular opacification (PCO).

Methods

Fifty-four eyes (36 patients) with PCO planned for laser capsulotomy were recruited. They underwent examinations of static visual acuity (SVA), DVA, CS and optical quality analysis (OQAS) before and one week after the laser treatment. Improvements in each index after laser treatment were analyzed. The visual quality of patients with good initial vision was studied separately.

Results

SVA, DVA and CS all significantly increased after capsulotomy (P < 0.05). Postoperative improvements in DVA were higher than in SVA, but they decreased when the speed increased. DVA at 15 dps gained the most improvement after capsulotomy. DVA at all analyzed speeds was significantly lower than SVA (P = 0.000). There was a significant speed-dependent decrease in DVA at lower speeds compared with higher speeds. The postoperative improvements in CS decreased when the spatial frequency was increased. The CS at the lower frequencies of 3 cpd and 6 cpd was the most improved after capsulotomy. CS was much lower at high frequencies (p < 0.05). There was a significant decrease in CS at higher spatial frequencies compared with lower frequencies. DVA improvements were correlated with CS improvements at medium spatial frequencies and with objective scattering index and Strehl ratio. The CS at all frequencies significantly improved for patients with good initial vision.

Conclusion

PCO could impair dynamic vision function, but CS was a more sensitive indication of visual complaints in patients with slight PCO.

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Author notes

  1. Ziyuan Liu and Zhiqiang Hou contributed equally to the work.

Authors and Affiliations

  1. Department of Ophthalmology, Peking University Third Hospital, Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, 49 North Garden Road, Haidian District, Beijing, 100191, China

    Ziyuan Liu, Zhiqiang Hou, Shan Ge, Honglei Pang & Wei Wang

Authors
  1. Ziyuan Liu
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  2. Zhiqiang Hou
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  3. Shan Ge
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  4. Honglei Pang
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  5. Wei Wang
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Contributions

ZL was involved in data collection and analysis and writing the manuscript, SG and HP helped in data collection, WW contributed to design, and ZH was involved in design and supervision.

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Correspondence to Zhiqiang Hou.

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Liu, Z., Hou, Z., Ge, S. et al. Vision function of pseudophakic eyes with posterior capsular opacification under different speed and spatial frequency. Int Ophthalmol 40, 3491–3500 (2020). https://doi.org/10.1007/s10792-020-01536-9

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  • DOI: https://doi.org/10.1007/s10792-020-01536-9

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