Retina Service, Department of Ophthalmology, Meir Medical Center, Kfar Saba, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Retina Service, Department of Ophthalmology, Meir Medical Center, Kfar Saba, Israel.
Colloids Surf B Biointerfaces. 2020 Nov;195:111265. doi: 10.1016/j.colsurfb.2020.111265. Epub 2020 Jul 26.
Interfacial properties of the animal retinas are reported. Wetting of the retina-retinal pigment epithelium-choroid-sclera tissues of cow, sheep, and pig eyes by water, silicone and castor oil was explored experimentally. Both water and silicone oils demonstrated complete wetting of the retina, regardless of the viscosity of the silicone oil, whereas the castor oil demonstrated a partial wetting regime. Similar wetting regimes were observed for sheep, cow and pig retinas. The intact surface of animal retina was found to be both hydrophilic and oleophilic. Wetting experiments with double sandwich oil/water layers were performed. Water demonstrated stronger affinity to the retina than silicone and castor oils, and eventually replaced the oils at the liquid/retina interface. We conclude that aqueous solutions continuously secreted in the living eye may displace silicone oil from the retinal surface and contribute to retinal re-detachment. Study of dynamics of wetting of the animal retina by water and organic oils is reported. The exponent describing the dynamics of spreading of the castor oil is lower than that predicted by the Tanner law. Castor oil may provide more effective tamponade than silicone oil.
报道了动物视网膜的界面特性。实验探索了水、硅油和蓖麻油对牛、羊和猪眼睛的视网膜-色素上皮-脉络膜-巩膜组织的润湿性。水和硅油都能完全润湿视网膜，而不论硅油的粘度如何，而蓖麻油则表现出部分润湿状态。羊、牛和猪的视网膜也观察到了类似的润湿状态。发现动物视网膜的完整表面既亲水又亲油。进行了双层油/水夹层的润湿实验。水比硅油和蓖麻油更具亲和力，最终在油水界面取代了油。我们得出结论，活眼中不断分泌的水溶液可能会将硅油从视网膜表面置换出来，并导致视网膜重新脱离。报告了水和有机油对动物视网膜润湿动力学的研究。描述蓖麻油扩展动力学的指数低于 Tanner 定律预测的指数。蓖麻油可能比硅油提供更有效的填塞。
