| 释义 |
hypotonia|haɪpəʊˈtəʊnɪə|
Freq. in anglicized form hypotony |haɪˈpɒtənɪ|.
[mod.L., f. hypo- 4 + Gr. τόν-ος tone n. + -ia1.]
1. Ophthalm. A state of reduced pressure of the intra-ocular fluid.
1886Syd. Soc. Lex., Hypotony... Applied by Nagel to the globe of the eye when less resistant than normal. 1892A. Duane tr. Fuchs's Text-bk. Ophthalm. ii. vii. 360 Diminution of the intra-ocular pressure (hypotonia) is found in very diverse affections of the eyeball. 1951H. S. Sugar Glaucomas xxiv. 371 Hypotony, particularly after the trephining operation, may result from too rapid drainage into the conjunctiva. 1966S. Lerman Basic Ophthalm. iv. 246 Another major cause of postoperative hypotony..is a serous detachment of the ciliary body.
2. Med. The condition (in muscle or muscular tissue) of being hypotonic.
1886Syd. Soc. Lex., Hypotony, defective tone of a part, or an organ, or a structure. 1907Practitioner Oct. 547 Undue muscular strain on the ankle, knee, hip, and spine, which, together with hypotonia, tends to break down the long arch. 1914[see hypertonia]. 1933W. R. Brain Dis. Nervous Syst. i. 12 A lesion of this path causes hypotonia, which is manifested in flaccidity and a diminished resistance to stretching of the affected muscles. 1962Lancet 6 Jan. 22/1 Her growth was stunted and the muscles showed a marked hypotonia with genu recurvatum. |