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- Title
Efficacy of preoperative nonsteroidal anti-inflammatory drug and the re-dilation technique in minimizing miosis after femtosecond laser in cataract surgery.
- Authors
Vieira Ventura, Bruna; Portela Rabello, Laura; Silvestre, Fernanda; Carvalho Ventura, Marcelo
- Abstract
Purpose: To assess the efficacy of using a nonsteroidal antiinflammatory drug preoperatively and of applying the redilation technique when necessary to minimize pupil size variation when comparing the degree of mydriasis before femtosecond laser pretreatment with that at the beginning of phacoemulsification. Methods: This retrospective study included patients who underwent cataract surgery using the LenSx (Alcon Laboratories, Inc., Fort Worth, TX). Our routine dilating regimen with flurbiprofen, tropicamide, and phenylephrine was used. The redilation technique was applied on eyes that manifested with a pupillary diameter that was smaller than the programmed capsulotomy diameter after laser pretreatment. The technique consists of overcoming pupillary contraction by instilling tropicamide and phenylephrine before phacoemulsification. Pupil size was assessed before femtosecond laser application and at the beginning of phacoemulsification. Results: Seventy-five eyes (70 patients) were included. Nine (12%) eyes underwent the redilation technique. There was no significant difference in mean pupillary diameter and mean pupillary area between the two studied surgical time points (p=0.412 and 0.437, respectively). The overall pupillary area constriction was 2.4 mm2. Immediately before opening the wounds for phacoemulsification, none of the eyes presented with a pupillary diameter <5 mm, and 61 (85.3%) eyes had a pupillary diameter >6 mm. Conclusion: Preoperative administration of nonsteroidal antiinflammatory drug and the redilation technique resulted in no significant pupil size variation in eyes that were pretreated with the femtosecond laser, when comparing the measurements made before the laser application and at the beginning of phacoemulsification. This approach can avoid the need to proceed with cataract extraction with a constricted pupil.
- Publication
Arquivos Brasileiros de Oftalmologia, 2019, Vol 82, Issue 2, p111
- ISSN
0004-2749
- Publication type
Article
- DOI
10.5935/0004-2749.20190025