A Mathematical Formulation of Intraocular Pressure as Dependent on Secretion, Ultrafiltration, Bulk Outflow, and Osmotic Reabsorption of Fluid.
نویسنده
چکیده
An equation has been derived under simplified assumptions showing how the steady-state value of intraocular pressure depends on rate of secretion of aqueous, episcleral venous pressure, outflow facility at the chamber angle, colloid-osmotic pressure of the blood, systemic arterial blood pressure, pressure distribution over the vascular tree of the eye, and filtration properties of the vasculature in different intraocular regions.
منابع مشابه
Correlation between Ultrafiltration Coefficient and Effective Lymphatic Absorption Rate in Continuous Ambulatory Peritoneal Dialysis Patients: A Possible Paradigm Shift
Background: The relative contribution of transcapillary water movement and lymphatic reabsorption in peritoneal dialysis (PD) is a critical issue, particularly in patients with ultrafiltration failure (UFF). Based on routine results obtained from the PD Adequest 2.0 software, the present study aimed to re-evaluate the separate effects of transcapillary water movement and lymphatic reabsorption ...
متن کاملEvaluation of the diurnal intraocular pressure fluctuations and blood pressure under dehydration due to fasting
Introduction: This study aimed to investigate the diurnal intraocular pressure fluctuations under dehydration conditions and the relationship between the intraocular pressure fluctuations and blood pressure. Methods: The intraocular pressures (IOP), body weights, as well as systolic and diastolic blood pressures (SBP, DBP) of 36 fasting healthy volunteers were recorded at 8:00 a.m. and 5:00 p.m...
متن کاملAquaporin Deletion in Mice Reduces Intraocular Pressure and Aqueous Fluid Production
Aquaporin (AQP) water channels are expressed in the eye at sites of aqueous fluid production and outflow: AQP1 and AQP4 in nonpigmented ciliary epithelium, and AQP1 in trabecular meshwork endothelium. Novel methods were developed to compare aqueous fluid dynamics in wild-type mice versus mice lacking AQP1 and/or AQP4. Aqueous fluid production was measured by in vivo confocal microscopy after tr...
متن کاملAqueous Humor Dynamics: A Review
Glaucoma is a family of optic neuropathies which cause irreversible but potentially preventable vision loss. Vision loss in most forms of glaucoma is related to elevated IOP with subsequent injury to the optic nerve. Secretion of aqueous humor and regulation of its outflow are physiologically important processes for maintaining IOP in the normal range. Thus, understanding the complex mechanisms...
متن کاملMathematical Modeling of Adsorption Process of Ethyl Acetate Impurity of Supercritical CO2 on Activated Carbon
A mathematical model is described and applied for adsorption process of ethyl acetate from supercritical CO2 stream on activated carbon particles. This model has the ability of illustrating variation of effluent concentration towards different parameters such as flow rate, temperature and pressure. In this research, a vast area of operational conditions is experienced. Mass transfer resistance ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Investigative ophthalmology
دوره 2 شماره
صفحات -
تاریخ انتشار 1963