The human diencephalon is composed of several regions. The thalamus which relays sensory information to the cerebrum, processes visual and auditory stimuli, and generates some emotions, among other functions.he human diencephalon is composed of several regions. The thalamus which relays sensory information to the cerebrum, processes visual and auditory stimuli, and generates some emotions, among other functions.
The LASIK surgery is performed by an ophthalmologist who uses a laser or microkeratome to reshape the eye's cornea in order to improve visual acuity. For most patients, LASIK provides a permanent alternative to eyeglasses or contact lenses.
What To Expect After Surgery. LASIK is an outpatient procedure. It is done under local anesthesia in a surgeon's office or a same-day surgery center. The operation on one eye takes about 10 to 15 minutes. The entire process usually takes less than 2 hours, including preparation time, care right after the surgery, and paperwork.