Kato K, Nagashima R, Matsubara H, Ikesugi K, Tsukitome H, Matsui Y, Nunome T, Sugimoto M, McCulloch DL, Kondo M. Transient Increase of Flicker Electroretinography Amplitudes after Cataract Surgery: Association with Postoperative Inflammation.
Ophthalmol Sci 2022;
3:100243. [PMID:
36545261 PMCID:
PMC9762194 DOI:
10.1016/j.xops.2022.100243]
[Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022]
Abstract
Purpose
To determine the characteristics and cause of the increase in the amplitude of flicker electroretinography (ERG) after cataract surgery.
Design
Prospective, observational clinical study.
Participants
Thirty patients who underwent cataract surgery.
Methods
Flicker ERGs were recorded with the RETeval system without mydriasis. The central macular thickness (CMT) was measured by OCT and the aqueous flare value (AFV) by laser flare-cell photometry. These examinations were performed before surgery and 1 day, 1 week, 1 month, 2 months, and 3 months after surgery. Linear regression analysis through the origin was used to compare the correlations between the relative changes in flicker ERG amplitudes and the changes in the CMT and AFV at different times after the surgery.
Main Outcome Measures
The amplitude of flicker ERGs, CMT, and AFV.
Results
The mean amplitude of flicker ERGs increased significantly by 31% at 1 week after surgery (P < 0.001); a significant increase in the amplitudes was not present at 3 months after the surgery. The mean AFV was significantly increased at 1 day after surgery (P < 0.001), and the CMT was significantly increased at 1 to 3 months after surgery (P < 0.001). The changes in flicker ERG amplitudes at 1 week after surgery were significantly associated with the changes in the CMT at 1 to 3 months after surgery (P < 0.05), and they were weakly associated with the changes in AFV at 1 day after surgery (P = 0.05).
Conclusions
These results suggest that the increase in the amplitude of flicker ERGs after cataract surgery is a transient phenomenon that has a peak at 1 week after surgery. The increase of flicker ERG amplitude was associated with measures that are frequently used to evaluate postoperative inflammation.
Financial Disclosures
Proprietary or commercial disclosure may be found after the references.
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