In both eyes, hypermetropia is a vertical gaze paralysis in which the patient loses both casual and reflex vertical gaze due to superior gaze paralysis caused by infarction of the anterior and posterior commissure of the parietal lid and inferior gaze paralysis caused by medial and dorsal infarction of the red nucleus. The medial aspect of the midbrain tegmentum brings together the downstream fibers of horizontal and vertical eye movements as well as the nucleus accumbens cluster, and different sites of damage can result in different compound eye signs. 1, actinic nerve palsy regeneration misdirection syndrome: actinic nerve palsy regeneration disorder, the extraocular muscles are innervated by regeneration misdirection nerve fibers, can be accompanied by a variety of eye movements, there are strange eyelid movement manifested as the affected eye attempts to turn down or inward when the eyelid retraction or pupil narrowing, generally no automatic rhythmic changes, individual cases of periodic spasm and regeneration misdirection combined exist mostly in congenital or traumatic The combination of periodic spasms and regenerative misdirection in individual cases is most often seen in the acute or recovery phase of articular nerve palsy. 2, Marcus-Gunn syndrome: also known as mandibular transient syndrome, first described by MarcusGunn, hence the name. It is a congenital ptosis with a specific associated movement of the pterygoid muscle, i.e., ptosis and eyelid retraction when the pterygoid muscle is stimulated. The cause may be related to the position of the trigeminal nerve branching to the third cerebral nerve innervating the levator aponeurosis. 3. Marin-Amat syndrome: Also known as antimandibular transient syndrome. This syndrome is characterized by periodic motoneuropathy in which the eyelid droops when the mouth is opened and the jaw moves, and disappears when the mouth is closed or when chewing stops. 4. Ptosis: This refers to the incomplete or loss of function of the levator muscle and smooth muscle, resulting in partial or complete ptosis, which can partially obscure the pupil in mild cases or completely obscure the pupil in severe cases, and can also cause amblyopia in congenital cases. In order to overcome the visual impairment, bilateral ptosis creates a special posture in which the head is tilted and the forehead is wrinkled because of the need to look up. In normal individuals, the upper lid margin covers 2 mm of the upper cornea and the average width of the lid fissure is about 7.5 mm. To estimate the function of the levator muscle, the position of the upper lid margin can be determined when the eye is looking extremely upward and downward, respectively, while offsetting the contraction of the frontalis muscle. In normal individuals, the difference should be more than 8 mm. If the difference is less than 4 mm between the front and back, this indicates severe insufficiency of the levator muscle.