Many people will find in their daily lives that one eye always looks larger than the other, and it is very obvious. This is caused by ptosis of the upper eyelid or nerve problems. You must pay attention to regulating the muscles of the eye nerves. It can be relieved through proper massage training and correction. If it is too obvious to be corrected, it can be solved with surgery. Different eye sizes generally do not refer to the size of the eyeball, but rather the different degrees of relaxation and tension of the skin on the outer eyelids, which causes the so-called "different sizes". Of course, there is also a condition called "ptosis", which means that the eyes cannot be fully opened, but this condition is relatively rare. According to the information provided by the OP, if you want to open your eyes but cannot, you may have "ptosis". Ptosis can be generally divided into two categories: congenital and acquired. According to the degree of ptosis, it can be divided into complete ptosis, incomplete ptosis and pseudo ptosis. In recent years, it has been demonstrated that the levator fascia is weak and is the primary cause of ptosis, leading to the development of a mechanical classification of ptosis. The classification in recent years is as follows: 1. Neurogenic ptosis This is the result of nerve innervation defect. Common causes: ① Oculomotor nerve palsy is often combined with other symptoms of cranial nerve III palsy; ② Ophthalmoplegic migraine, which is less common and is characterized by ipsilateral oculomotor nerve palsy after unilateral migraine; ③ Horner syndrome after sympathetic nerve damage; ④ Synkinetic ptosis (Marcus Gunn syndrome). 2. Myogenic ptosis is caused by defects in the levator palpebrae superioris muscle. Ptosis can occur when congenital dysplasia, myasthenia gravis, muscular atrophy, oculopharyngeal muscular dystrophy, and ocular trauma affect the contraction function of the levator palpebrae superioris muscle. This type of ptosis can be divided into three types: mild (1-2mm), moderate (3-4mm), and severe (5-6mm). The function of the levator palpebrae superioris muscle can be described as: good (>8mm), fair (5-7mm), and poor (4mm or less). This is only used to estimate the amount of congenital ptosis. If it is used for surgical correction of the same amount of acquired ptosis, it will normally result in overcorrection. 3. Aponeurotic ptosis is caused by dysfunction of the levator palpebrae superioris muscle. The levator aponeurosis is weak due to aponeurosis defect or tear. The aponeurosis may also be infiltrated or replaced by fatty tissue. Aponeurotic ptosis may occur after various types of eye surgery and may be caused by postoperative eyelid edema or excessive extension of the patient's eye when covering the eye, injuring the delicate aponeurosis. The typical manifestation of aponeurotic defects is an exaggerated or blurred eyelid crease (double eyelid), and the eyelid is so thin above the tarsal plate that the pupil can be seen through it even when the patient's eyelid is closed. 4. Mechanical ptosis is often caused by various eyelid tumors, blepharoptosis, etc. It can also be caused by eyelid scars affecting the movement of the levator palpebrae superioris muscle. |
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