presbyopia
presbyopia[ˌprɛzbɪˈəʊpɪə]noun- [mass noun]long-sightedness caused by loss of elasticity of the lens of the eye, occurring typically in middle and old age
老花眼,老视
派生presbyopicadjective语源- late 18th cent.: modern Latin, from Greek presbus 'old man' + ōps, ōp- 'eye'
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