Rizwan A, Javaid RMM, Latif S, Sarwar MS, Khan AA. Comparison of residual silicone oil index after removal of silicone oil with fluid-air versus oil-fluid exchange.
Pak J Med Sci 2023;
39:439-443. [PMID:
36950406 PMCID:
PMC10025723 DOI:
10.12669/pjms.39.2.6243]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 12/23/2022] [Accepted: 01/05/2023] [Indexed: 01/28/2023] Open
Abstract
Objectives
To compare the effectiveness of fluid-air exchange with silicone oil-fluid exchange in reducing the residual silicone oil (SO) droplets after the removal of SO.
Methods
This was a prospective, quasi-experimental study conducted from October 2021 to February 2022 at Eye Unit-III, COAVS, Mayo Hospital, Lahore. Sixty-one patients with siliconized eyes underwent removal of SO with two different techniques and were divided into fluid-air exchange and oil-fluid exchange groups. To quantify the residual silicone droplets objectively, B-scan echographic images were analyzed within seven days of surgery. Silicone oil index (SOI) which is the amount of residual SO droplets/vitreal area in the images was calculated with the help of imagej software.
Results
The residual SOI of the fluid-air exchange group (0.99 ± 1.76%) was significantly lower than the oil-fluid exchange group (3.25 ± 3.85%). The SOI is positively correlated with the duration of tamponade, preoperative intraocular- pressure and axial length. Persistent IOP elevation post-operatively was seen in 16.67% individuals in the fluid-air exchange group and 54.8% individuals in the oil-fluid exchange group.
Conclusion
Fluid-air exchange group was found to be superior in reducing residual SO droplets than the oil-fluid exchange group.
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