Step one. Choose a lens with enough depth to clear the cornea entirely. Scleral lenses by definition do not touch the cornea. If you put a lens on the eye that touches the cornea, it is simply not deep enough. Moving to a lens with greater depth will eventually lead to a lens that clears the cornea entirely.
Guide. An electroencephalogram (EEG) is a test that measures and records the electrical activity of your brain. Special sensors (electrodes) are attached to your head and hooked by wires to a computer. The computer records your brain 's electrical activity on the screen or on paper as wavy lines. Certain conditions, such as seizures, can be seen by the changes in the normal pattern of the brain 's electrical activity.
1 The electroencephalogram (EEG) is a medical test used to measure the electrical activity of the brain. 2  A number of electrodes are applied to your scalp. 3  EEG can help diagnose a number of conditions including epilepsy, sleep disorders and brain tumours. 4  Rate this website. 5  Your comments. 6  Questions.  Your details.