Although the MOSFET is a four-terminal device with source (S), gate (G), drain (D), and body (B) terminals, the body (or substrate) of the MOSFET is often connected to the source terminal, making it a three-terminal device like other field-effect transistors.n the case of an n-type switch, the body is connected to the most negative supply (usually GND) and the gate is used as the switch control. Whenever the gate voltage exceeds the source voltage by at least a threshold voltage, the MOSFET conducts. The higher the voltage, the more the MOSFET can conduct.
Causes of Glaucoma. Glaucoma causes include elevated eye pressure (called intraocular pressure or IOP) due to the eyeâs inability to drain fluid efficiently. A clear fluid called aqueous humor circulates inside the front portion of our eyes.
Glaucoma develops in some patients with a condition called exfoliation syndrome. Also known as pseudoexfoliation, it is caused by the abnormal accumulation of protein in the drainage system and other structures of the eye.This is a type of open-angle glaucoma with unique characteristics and physical findings.It is more common in certain racial groups including people from Russia, the Nordic countries, Greeks, Mediterranean populations, Indians, and others.his is a type of open-angle glaucoma with unique characteristics and physical findings. It is more common in certain racial groups including people from Russia, the Nordic countries, Greeks, Mediterranean populations, Indians, and others.