正常人眼内压昼夜变化可达9mmHg,超过 10mmHg者罕见。影响眼内压的生理因素有房水流入量、房水流出阻力、静脉特别是上巩膜静脉的压力、脉络膜血流量等。体位变化,由于影响到上述因素,故由直立位到坐位时眼内压升高;仰卧位眼内压会进一步升高;如呈垂头仰卧位(Trendelenburg氏体位)或倒立,则眼内压升得更高。此外,体育活动,气候与温度,也可影响眼内压。本文着重介绍体位改变对眼内压的影响及有 Normal intraocular pressure diurnal changes up to 9mmHg, more than 10mmHg rare. Physiological factors that affect intraocular pressure have atrial inflow, aqueous outflow resistance, the pressure of the veins especially the scleral vein, choroidal blood flow and so on. Changes in body position, due to the above factors, so from the upright to the seat when the intraocular pressure increased; supine position intraocular pressure will be further increased; such as was vertical head position (Trendelenburg’s position) or inverted, the intraocular pressure Lifted higher. In addition, physical activity, climate and temperature can also affect intraocular pressure. This article focuses on the impact of body position changes on intraocular pressure and have