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.
In essence, you must have had a stable prescription for at least two years, and then only you should plan to undergo LASIK surgery. If you wish to go for custom LASIK, the minimum age is the same as that for conventional LASIK. There is no upper age limit for LASIK surgery.Even a 50 or 60 year old person may opt for LASIK. The point is that LASIK can very well correct the refractive error of a myopic patient at any stage of the patient's life, provided the patient's eyes are otherwise healthy. preoperative examination conducted prior to the age of 18 might result in incorrect measurements, and consequently, an appropriate correction via LASIK. Patients suffering from a higher degree of myopia or astigmatism should defer the surgery a wee bit longer than others-normally until the age of 21 or so.