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.
Like all surgical procedures, LASIK has the risk of complications and is not for everyone. Even when performed on the right patients, a complication-free laser eye surgery can result in less than 20/20 vision. A good candidate for LASIK is willing to accept reasonable risk and the possibility of rare complications.