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.
LASIK still the most common procedure. LASIK is by far the most common laser eye surgery procedure for people between 21 and 45 years of age. However, if the cornea of a person seeking laser eye surgery is discovered to be thin or irregularly shaped, ASLA will most likely be recommended.