PRESBYOPIA
\pɹɪsbɪˈə͡ʊpi͡ə], \pɹɪsbɪˈəʊpiə], \p_ɹ_ɪ_s_b_ɪ__ˈəʊ_p_iə]\
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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.
By Oddity Software
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The normal decreasing elasticity of the crystalline lens that leads to loss of accommodation.
By DataStellar Co., Ltd
By William R. Warner
By Willam Alexander Newman Dorland
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hydromorphic
- [Greek] Structurally adapted to an aquatic environment, as organs of water plants.