| 单词 | shadow test |
| 释义 | > as lemmasshadow test shadow test n. (a) a method of finding out by refraction whether an eye is myopic or hypermetropic; (b) a method of examining the outer side of an eye affected with cataract in its second stage ( New Sydenham Soc. Lexicon 1898). ΘΚΠ the world > health and disease > healing > ophthalmology or optometry > [noun] > kinds of eye-test shadow test1884 koroscopy1887 lantern test1890 Stilling1896 1884 H. E. Juler Handbk. Ophthalmic Sci. xiv. 363 The two following [methods] are very useful in estimating refraction; in both the ophthalmoscopic mirror alone is employed, and is held at a considerable distance from the eye. The first of these may be called the ‘Fundus-Image’ test; the other has been called ‘Retinoscopy’, but would be more appropriately designated by some such term as ‘Shadow Test’. 1889 G. A. Berry Dis. Eye xiv. 462 It has been called the shadow test because attention is directed perhaps more to the dark shadow which borders the illuminated area than to the area itself. 1964 S. Duke-Elder Parsons' Dis. Eye (ed. 14) vii. 69 Retinoscopy, or, more correctly, skiascopy or the shadow test, is the most practicable method of estimating the conditions of the refraction objectively. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。