nystagmus refers to the eyes do not have a rhythm between swing freely. This is a visual, and lost control, such as the central location of the eye of spaces eye caused by abnormal factors, but also for the body to adapt to changing internal and external environment and the emergence of compensatory action.
nystagmus is divided into: congenital nystagmus, central nystagmus, physiological nystagmus, lost, such as nystagmus.
congenital nystagmus, also known as congenital idiopathic nystagmus, is a manifestation of complex and serious harm, which has yet to reveal the cause and treatment of difficult diseases. Incidence of the disease earlier, the clinical eye of the law in order to sway manifestations as the main, they can cause amblyopia, and the solid side, as well as difficulties, a serious impact on visual function.
congenital nystagmus patients with eye muscle proprioceptor of muscle fiber and have their own distinct form of organization of light microscopy and ultrastructural changes. Mainly, proprioceptor in a large number of medullary, lipofuscin and a decrease in the number of mitochondria, swelling, with ridge or crack, spindle denaturation occurred within muscle fibers, disorder and necrosis, a large number of proliferation of collagen fibers. Receptor in sensory nerve endings deformation and the emergence of the phenomenon of demyelination. Some receptor structure completely disorders, absence of neural components, spindle denaturation with a large number of muscle fibers, dissolved, disappeared sarcomere structure, homogenization and vacuolation. Extraocular muscle itself has changed, sarcomere length ranging from SR significantly expand the cytoplasm appear more autophagy, and the resulting formation of lipofuscin, myeloid body, and other residual body. At the same time, a large number of intracytoplasmic lipid.
central nystagmus: vestibular nucleus may be in contact on the brain stem, cerebellum and spinal cord, etc. caused by the disease. For the multi-level, rotating or vertical impulse, very few of swing. In the eyes to the side of a total of when to switch. No vertigo hearing loss, often accompanied by other central nervous system symptoms and signs of damage.
physiological nystagmus There are several types: binocular vision to inject a very peripheral attention, 50 to 70% of the eyes can appear irregular rhythm impulse nystagmus, known as end-nystagmus; eyes follow the movement of a Side attention to the goal square, eyes may appear impulsive nystagmus, known as dynamic as nystagmus.
lost nystagmus: lost to the side, the vestibular nerve, the vestibular nuclei in any part of the damage, the side may have too high or too low due to the response of the vestibular nerve. For the multi-level or spin impulse. Mild stimulus will cause lost to the affected side of the eye flutter, caused devastating damage to the side of nystagmus. Patients with hearing loss and vertigo, and so on.
nystagmus is above the classification and pathology.'s own congenital eye on the big hurt in the operation I think is not feasible, the physiological all right. to say that I personally see or to do a good laser treatment of myopia surgery.