Alexandre Paashaus da Costa Pinto; Daniel Tenório Camelo Soares; Marília Rocha Costa; Rodrigo Pessoa Cavalcanti Lira
DOI: 10.5935/0004-2749.2022-0336
ABSTRACT
PURPOSE: To compare the injection of small amounts of undiluted C3F8 with the traditional gas injection in vitrectomy for macular hole treatment.
METHODS: This clinical trial included 26 individuals divided into two groups. Group 1 received an intravitreal injection of 0.9-1.0 mL of 100% C3F8, and Group 2 received 15-20 mL of 20% C3F8.
RESULTS: The median intraocular gas duration was 31 days in Group 1 and 34 in Group 2. The median letter gains in corrected distance visual acuity for the 26th postoperative week were 20 letters in Group 1 and 12.5 in Group 2. The median intraocular pressure was normal in both groups. Primary anatomical success was 11/13 in both groups.
CONCLUSIONS: The use of C3F8 gas in a small undiluted volume is an alternative that slightly reduces the duration of the gas without negatively affecting the anatomical and visual response.
Keywords: Retinal perforations/surgery; Vitrectomy; Sulfur hexafluoride/administration & dosage; Fluorocarbons/administration & dosage; Gases; Tomography, optical coherence
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