e). In an actual clinical setting, however, these two different ptoses are fairly easy to distinguish. In addition to the blown pupil in a CNIII (oculomotor nerve) lesion, this ptosis is much more severe, occasionally occluding the whole eye. The ptosis of Horner's syndrome can be quite mild or barely noticeable.
When anisocoria occurs and the examiner is unsure whether the abnormal pupil is the constricted or dilated one, if a one-sided ptosis is present then the abnormally sized pupil can be presumed to be the one on the side of the ptosis.
- ↑ Adams, Raymond Delacy; Victor, Maurice; Ropper, Allan H. (2001). Adam and Victor's principles of neurology, New York: McGraw-Hill.
- ↑ Gesundheit B, Greenberg M (2005). Medical mystery: brown eye and blue eye--the answer. N Engl J Med 353 (22): 2409-10. PMID 16319395.
- ↑ Horner JF. Über eine Form von Ptosis. Klin Monatsbl Augenheilk 1869;7:193-8.
- ↑ Who Named It synd/1056
- ↑ Graff JM, Lee AG. Horner's Syndrome (due to Cluster Headache): 46 y.o. man presenting with headache and ptosis.. Ophthalmology Grand Rounds. The University of Iowa. URL accessed on 2006-09-22.
Nervous system pathology, primarily PNS (G50-G99, 350-359)
|Nerve, nerve root|
and plexus disorders
cranial nerve: V (Trigeminal neuralgia) - VII (Facial nerve paralysis, Bell's palsy, Melkersson-Rosenthal syndrome, Central seven) - XI (Accessory nerve disorder)
and other disorders of the PNS
| Diseases of myoneural junction|
Myasthenia gravis - Primary disorders of muscles (Muscular dystrophy, Myotonic dystrophy, Myotonia congenita, Thomsen disease, Neuromyotonia, Paramyotonia congenita, Centronuclear myopathy, Nemaline myopathy, Mitochondrial myopathy) - Myopathy - Periodic paralysis (Hypokalemic, Hyperkalemic) - Lambert-Eaton myasthenic syndrome
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