Die Wiederbelebungszeit der menschlichen Netzhaut

Removal of Silicone Oil With 25-Gauge Transconjunctival Sutureless Vitrectomy System

“…29 The authors report complete hemostasis during the dissections with an anatomic rate of 94% and improvement of two or more lines of vision in 88%, which exceeded the authors' previous results without hyperinfusion pressure. In an another study, Bock et al 30 reported nine eyes with malignant melanoma in which the IOP was raised to 100 mmHg to occlude the central retinal artery for 60 minutes before enucleation, without a drop in visual acuity, perimetry, dark adaptation, or electroretinogram testing. Hilton has also shown that the retina is able to tolerate occlusion of the central retinal artery for 10 minutes, without visual impairment, in the setting of scleral buckling without drainage of subretinal fluid and also in the context of pneumatic retinopexy.…”

Experimental occlusion of the central artery of the retina. IV: Retinal tolerance time to acute ischaemia.

“…If it is assumed to be 100% in the first [15][16][17][18][19][20] minutes, it is 80-90% from 20-40 minutes, 70% from 40-60 minutes, 50% at 70 minutes, and 20-30% at 90 minutes' ischaemia. On restoration of retinal circulation after 1 hour of ischaemia the glucose of the vitreous remained constantly low in the first 30 minutes.…”

Farbdopplersonographie retrobulbärer Gefäβe bei Amaurosis fugax

“…Da es sich urn eine vorubergehende Blindheit handelt, muf3 das korpereigene Fibrinolysesystem den Embolus innerhalb einer Zeitspanne von max. 2 Stunden aufgelost haben, weil sich aufgrund der Uberlebenszeit der menschlichen Retina sonst eine dauerhafte Amaurose ergeben wurde [2]. Jedoch selbst beim ZentralarterienverschluB durfte die Rekanalisation der A. centralis retinae binnen kurzer Zeit stattfinden [1].…”