Neuromuscular Disorders
Chronic progressive external ophthalmoplegia
Oct. 29, 2024
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Superior view of the left orbit
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(Source: Zinn JG. Descriptio anatomica oculi humani. Göttingen, B. Abrahami Vandenhoeck, 1780. Tab V, Figure 1. Public domain. Figure edited and labeling translated and updated from the original French labels by Dr. Douglas J Lanska.)
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(a) Eye; (b) Optic nerve in the muscular cavity; (c) Optic nerve cut off outside the orbit; (d) The portion of the dura mater, which, having been severed from the optic nerve, leaves the opening of the orbit; (e) Levator palpebrae superioris, the levator of the upper eyelid, arising from the angle of the division of the dura mater, and terminating in the broad aponeurosis; (f) Superior rectus muscle "in large part the levator of the lid" (through a synkinesis); (g) The superior oblique muscle bent by a pulley (the trochlea); (h) Inferior oblique muscle insertion; (i) Inferior rectus muscle; (k) Lateral rectus muscle; (l) Superior head (lesser) of the lateral rectus muscle; (m) Inferior head of the lateral rectus muscle; (n) An interval between the two heads of the lateral rectus muscle, through which the collected nerves are transmitted in a bundle; (o) The first branch of the fifth nerve (V1); (p) Of this first branch of the fifth nerve (V1), the lacrimal branch was cut off; (q) Frontal branch of the fifth nerve (V1) cut off; (r) Nasal branch of the fifth nerve (V1); (s) Branch of the nasal shoot, which constitutes the longer root of the ophthalmic ganglion; (t) Oculomotor nerve; (u) Abducens nerve.
(Source: Zinn JG. Descriptio anatomica oculi humani. Göttingen, B. Abrahami Vandenhoeck, 1780. Tab V, Figure 1. Public domain. Figure edited and labeling translated and updated from the original French labels by Dr. Douglas J Lanska.)