Noun
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.
Source: Webster's dictionaryOn the other hand, use of sunglasses and alcohol consumption were inversely and significantly associated with presbyopia. Source: Internet
Further investigation is recommended to assess the effect of alcohol consumption on presbyopia. Source: Internet