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Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
Effect of infusion pressure during cataract surgery on ganglion cells measured using isolated-check visual evoked
Tong Ding1, Dan-Na Shi1, Xiang Fan1
1Peking University Third Hospital Eye Center, Beijing 100191, China.
Aim:
To detect the relationship between infusion pressure and postoperative ganglion cells function.
Methods:
This prospective observational cohort study included sixty-one eyes that underwent uncomplicated cataract surgery. Patients were divided into two groups according to infusion time (IT) recorded using surgery equipment [Group A: IT>ITmean (27 eyes); Group B: IT
Results:
Neither group showed significant postoperative changes in macular ganglion cell-inner plexiform layer (mGC-IPL) thickness (1-week postoperative: Group A P=0.185, Group B P=0.381; 1-month postoperative: Group A P=0.775, Group B P=0.652). Postoperative mGC-IPL thickness of Group A was not significantly thicker than that of Group B at both post surgery time point (1-week postoperative P=0.913; 1-month postoperative P=0.954). In Group A, the mGC-IPL thickness change 1wk postoperatively was positively correlated with IT (R2=0.156, P=0.0198). A suspected progressive deficit in the magnocellular pathway was also found in Group A 1-month postoperatively [individual observed F (IOF)=0.63±0.70]. Significant increases were observed in postoperative retinal sensitivity measured by microperimetry (1-week postoperative: Group A P=0.015, Group B P<0.001; 1-month postoperative: Group A P=0.005, Group B P<0.001). In Group B, IT was negatively correlated with the increase in macular sensitivity (1-week postoperative: R2=0.372, P<0.001; 1-month postoperative: R2=0.209, P=0.007).
Conclusion:
Both mGC-IPL thickness and retinal sensitivity increased postoperatively. A suspected progressive deficit in the magnocellular pathway was found in the group with a long IT, which induced more prominent changes.
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