Vitreomacular traction (pulling of the vitreous body on the fovea – the thinnest part of the retina in the macula) can lead to the formation of a hole in this area. Sometimes a macular hole is also combined with a maculapucker. The therapy of the macular hole is the performance of a vitrectomy with subsequent introduction of a gas mixture into the eye. This is to allow a closure of the hole. For this it is necessary to take a certain facial position (eg lying on the abdomen or bent downwards Kop). The gas mixture dissolves by itself within a few weeks.