Effect of intraocular lens implantation on visual field in glaucoma and comorbid cataracts
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Ting Wang. Shandong Eye Hospital, 372 Jingsi Rd, Jinan 250021, Shandong Province, China. wt-ting@163.com; Ying-Ting Zhu. TissueTech, Inc., 7000 SW 97th Avenue, Suite 212, Miami, FL 33173, USA. yzhu@tissuetechinc.com

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Supported by the National Natural Science Foundation of China (No.81760170); the Shandong Provincial Natural Science Foundation (No.ZR2019MH135; No.ZR2019PH110).

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    Abstract:

    AIM: To investigate the effects of intraocular lens (IOL) implantation on visual field (VF) in patients with glaucoma and comorbid cataracts (G&C) with different disease severities. METHODS: Totally 56 eyes of 50 patients with primary G&C were included. All patients were divided into three groups based on the severity of the VF defect: the mild, moderate, and severe stage. Phacoemulsification was performed for cataract removal combined with IOL implantation. Visual acuity (VA) and VF tests were performed for all enrolled patients, up to 3mo after surgery. Changes in VF threshold and global VF index in various groups were also recorded before and after surgery. The mean light sensitivity (MS) values and the changes following surgery (DMS) were compared between the three groups. Advanced Glaucoma Intervention Study (AGIS) scoring was analyzed on all VF results for analysis of changes in VF before and after surgery. RESULTS: Following surgery, the MS values of the three groups of G&C increased significantly, while the AGIS scores decreased statistically in all groups. The DMS values for the three zones in moderate and severe stage but not mild stage were statistically different between zones. The DMS value was significantly higher in zone I than those in zone II and III (zone I>zone II>zone III; P<0.05). The DMS was significantly higher in zone I than that in zone III in moderate stage patients (zone I>zone II>zone III; P<0.01), while the DMS values in the severe stage patients was significantly higher in zone I than those in zone II and III (zone I>zone II>zone III; P<0.01). CONCLUSION: The mean VF sensitivity of glaucoma patients increased significantly after cataract removal and IOL implantation. Variations in the severity and distribution of characteristics of VF defects result in differences in postoperative VF improvements after cataract surgery. The magnitude of increase in VF sensitivity is associated with VF defect characteristic in glaucoma.

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Can Zhao, Qing Cun, Yi-Jin Tao, et al. Effect of intraocular lens implantation on visual field in glaucoma and comorbid cataracts. Int J Ophthalmol, 2020,13(4):580-586

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Publication History
  • Received:December 22,2019
  • Revised:February 10,2020
  • Adopted:
  • Online: March 03,2020
  • Published: