Eter Nicole, Brinken Ralf, Garbe Stephan, Spitznas Manfred
Department of Ophthalmology, University of Bonn Medical Center, Sigmund-Freud-Strasse 25, 53105, Bonn, Germany.
Graefes Arch Clin Exp Ophthalmol. 2006 Mar;244(3):305-8. doi: 10.1007/s00417-005-1168-z. Epub 2005 Aug 13.
To study vitreous cavity humidity during fluid-air exchange in pars plana vitrectomy.
Intraocular humidity in the vitreous cavity was recorded for 2 min in six artificial eyes, six enucleated pig eyes, and ten patient eyes, after the eyes had been filled with either humidified air (75% humidity) or dry air (8% humidity).
In artificial eyes the humidity levelled off at a value that was approximately equal to the humidity of the infused air, i.e., a mean of 71.9% when humidified air was used and a mean of 14.4% when dry air was used. In enucleated pig eyes humidity increased slightly with humidified air and remained stable with dry air. In patients intraocular humidity increased to over 90%, regardless of whether humidified or dry air was used.
In the living eye, dry air deprives the retinal tissue of humidity, which is lost into the vitreous cavity. This effect can be reduced by using humidified air.
研究扁平部玻璃体切除术中液气交换时玻璃体腔的湿度。
在六只人工眼、六只摘除的猪眼和十只患者眼中，在眼内注入加湿空气（湿度75%）或干燥空气（湿度8%）后，记录玻璃体腔内的眼内湿度2分钟。
在人工眼中，湿度趋于稳定，其值大致等于注入空气的湿度，即使用加湿空气时平均为71.9%，使用干燥空气时平均为14.4%。在摘除的猪眼中，加湿空气使湿度略有增加，干燥空气使湿度保持稳定。在患者中，无论使用加湿空气还是干燥空气，眼内湿度均增加到90%以上。
在活眼中，干燥空气使视网膜组织失去湿度，这些湿度会散失到玻璃体腔中。使用加湿空气可减少这种影响。
