Objective assessment of YAG laser vitreolysis in patients with symptomatic vitreous floaters

Carlos E. Souza, Luiz H. Lima, Heloísa Nascimento, CLAUDIO MAURICIO ZETT LOBOS, Rubens Belfort

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Background: To objectively evaluate YAG laser vitreolysis for symptomatic vitreous floaters using color photo imaging. Methods: In this interventional and prospective study, 32 eyes of 32 patients with symptomatic vitreous floaters secondary to posterior vitreous detachment (PVD) were treated with a single session of yttrium aluminum garnet (YAG) laser. Primary outcomes were objective and subjective changes measured by masked grading of color fundus photographs and National Eye Institute Visual Functioning Questionnaire 25 (NEI VFQ-25), respectively. Secondary outcomes included Early Treatment Diabetic Retinopathy Study (ETDRS), best-corrected visual acuity (BCVA) and adverse events. Wilcoxon signed-rank test was used to analyze the results of the objective and subjective assessments at each time point. P < 0.05 was considered statistically significant. Results: Thirty-two patients (32 eyes; 13 men and 19 women) with symptomatic vitreous floaters were enrolled in this study (mean age: 59.4 years). All study patients were followed up for 6 months. Following the laser vitreolysis, there was a statistically significant improvement in both the near visual function (z =-2.97; p = 0.003; r = 0.633) and visual disturbance rate (z =-3.97; p < 0.001; r = 0.84). Distance visual function did not show statistically significant difference after the laser procedure (p = 1.00). Color fundus photograph did reveal vitreous opacity improvement over time in 93.7% of study eyes (partial improvement in 37.5% and total improvement in 56.2% of study eyes). During the follow-up period, recurrence of vitreous floaters, BCVA deterioration and adverse events were not observed. Conclusions: YAG laser vitreolysis decreased the amount of vitreous floaters opacities seen on color fundus imaging and improved related symptoms according to the NEI VFQ-25 responses.

Original languageEnglish
Article number1
JournalInternational Journal of Retina and Vitreous
Volume6
Issue number1
DOIs
StatePublished - 21 Jan 2020
Externally publishedYes

Keywords

  • Color fundus photograph
  • NEI VFQ-25 questionnaire
  • Vitreolysis
  • Vitreous floaters
  • YAG laser

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