Simple exophthalmos What performance?

Simple exophthalmos generally only some signs of ocular abnormalities, but no obvious symptoms. Levy is the main focus of the upper eyelid muscle contracture contraction of the upper eyelid. Normal eyes-forward situation as completely relaxed, the upper eyelid covered cornea slightly (black eyes) on the edge. Simple eye on the patient's eyelid contraction in the Ping as often unable to build on the margin of the cornea, therefore, in the eyelid margin and the margin between the cornea exposed some of the sclera (white eye). On the eyelid muscle contracture may be related to high levels of thyroid hormones and the sympathetic nervous excitement. The contracture of the upper eyelid, looking downward, the upper eyelid ptosis behind the eye down, reveal the sclera will be more obvious, perhaps, although not as exposed sclera, but can be exposed when looking downward sclera. Contracture patients of the upper eyelid, eye looks great and God, and there is a feeling of staring. Normal eye of exophthalmos (orbital bone lateral edge of the cornea to the front of the distance) generally not more than 16 mm, but the myopia of exophthalmos may be larger than some. If there are no degrees of myopia and exophthalmos more than 16 mm, generally regarded as a exophthalmos. Simple exophthalmos of the exophthalmos generally not more than 20 mm.