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.
A pre-procedure consultation with your doctor will help determine the right type of laser eye surgery for you. 1  Custom LASIK is a laser vision correction procedure that helps your surgeon customize the laser treatment to your individual eyes. 2  Bladeless LASIK uses a gentle laser to create a precise, uniform corneal flap.