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Swept-source OCT may visualize macula better in early postop period in gas-filled eyes
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Swept-source OCT outperformed spectral domain OCT in visualizing the macula in patients with gas-filled eyes in the early postoperative period.
Researchers retrospectively reviewed 61 eyes with idiopathic macular hole or rhegmatogenous retinal detachment treated with pars plana vitrectomy and gas tamponade. Eyes were imaged with SD-OCT and SS-OCT at 1 day, 3 days and 7 days after the procedure.
In eyes with rhegmatogenous retinal detachment, good image visualization was noted on day 1 with SD-OCT in 35.3% of eyes and with SS-OCT in 73.5% of eyes using a line scan protocol. In eyes with macular holes, the rates were 59.3% with SD-OCT and 88.9% with SS-OCT using a line scan protocol.
Better visualization of the macula was obtained more frequently on day 3 and day 7 compared with day 1. On day 7, there was no significant difference between the two devices for any surgical indication.
“Our study showed that SS-OCT may perform better for visualization of the macula than SD-OCT does in the gas-filled eyes. Furthermore, the line scan protocol seems to produce better images of the macula than the 3-D volume scan protocol in gas-filled eyes,” the study authors wrote. “For surgical cases in which early postoperative evaluation of the macula may be clinically important, such as MH and RRD, SS-OCT may be recommended for the imaging modality used for evaluation of the macula in gas-filled eyes, which can support clinical decisions on additional postoperative care.” – by Robert Linnehan
Disclosures: The authors report no relevant financial disclosures.
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