Transient Increase of Flicker Electroretinography Amplitudes after Cataract Surgery
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Résumé
PurposeTo determine the characteristics and cause of the increase in the amplitude of flicker electroretinography (ERG) after cataract surgery.DesignProspective, observational clinical study.ParticipantsThirty patients who underwent cataract surgery.MethodsFlicker 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 MeasuresThe amplitude of flicker ERGs, CMT, and AFV.ResultsThe 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).ConclusionsThese 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 Disclosure(s)Proprietary or commercial disclosure may be found after the references. To determine the characteristics and cause of the increase in the amplitude of flicker electroretinography (ERG) after cataract surgery. Prospective, observational clinical study. Thirty patients who underwent cataract surgery. 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. The amplitude of flicker ERGs, CMT, and AFV. 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). 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.
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Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
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