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Instrument for subretinal fluid drainage tested in animals, humans

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A device for aspiration and injection of fluids in the subretinal space may prove to be an efficient and safe tool, according to work in animals and humans.

Se Woong Kang, MD, and colleagues at the Samsung Medical Center in Seoul, Korea, described the use of the device, which acts as a curved tunnel through which a needle and fluids can be moved. They assessed the efficacy of subretinal fluid drainage with the subretinal aspiration and injection device (dubbed SR-AID) on six cases of clinical retinal detachment.

Fluid was injected successfully into the subretinal space in three of six rabbit eyes and in two of two pig eyes. The mean duration required for the drainage of subretinal fluid with the SR-AID was 127 seconds. “There was no incidence of significant retinal hemorrhage or retinal perforation in the animal experiments and in human cases,” the authors said in Retina.