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.
Ask your doctor what the chances are that you'll need a refinement. 4. Know if You Are Eligible -- LASIK is not for everyone. People with severe dry eyes, certain corneal diseases, and other select eye conditions should not undergo LASIK. 5. Know What Happens -- Be sure you fully understand the entire procedure. Since you will be awake for the surgery, you don't want any surprises.