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.
disclaimer: I do not perform LASIK anymore because I do retinal surgery but I am a board certified ophthalmologist and I teach ophthalmology at the University of California, Irvine in the USA. LASIK is not life threatening. LASIK does not cause cataracts.