Presbyopia

[,prezbi'әupiә]

解释:

(noun.) a reduced ability to focus on near objects caused by loss of elasticity of the crystalline lens after age 45.

克劳迪娅手打--From WordNet

解释:

(-) A defect of vision consequent upon advancing age. It is due to rigidity of the crystalline lens, which produces difficulty of accommodation and recession of the near point of vision, so that objects very near the eyes can not be seen distinctly without the use of convex glasses. Called also presbytia.

手打:苏珊

同义词及近义词：

n. Far-sightedness.

手打:凯西

解释:

n. long-sightedness together with diminished power of distinguishing things near common in old age—also Pres′byopy.—n. Pres′byope one so affected.—adj. Presbyop′ic.—n. Pres′byte one affected with presbyopia.

校对:鲁本