Table 1.
Survey results of quality of life indices and ocular symptoms.
Table 2.
Age of first awareness of difficulty focusing and first reading glasses.
Fig 1.
Scatter plots of near add power and age.
Annual progression of near add power was similar in men (black circle, solid regression line) and women (red triangle, dotted regression line). Symbol overlap may not accurately represent the number of participants. The number of zero near power cases was 21 men and 26 women with no difference. It is also indicated by similar regression lines of both groups.
Table 3.
Refraction, near add power, and dry eye-related parameters in men and women.
Fig 2.
Prevalence of symptoms and burden with vision, and the proportion of near correction.
The proportion of awareness of presbyopia was greater than that of impact across all ages surveyed. Awareness of difficulty focusing was age-dependent. The proportion of near correction was very low until age of 47 and then increased steeply. The severity of burden with near vision was apparently age-dependent, and burden with middle-distance vision were constant until increasing after age of 48, whilst burden with far vision was constant across all ages surveyed. Symbols and abbreviations: Near (black), burden with near vision; Middle (red), burden with middle-distance vision; Far (grey), burden with far vision; Awareness (orange), awareness of difficulty focusing; Impact (blue), reported impact of difficulty focusing; Correction (green), near correction.
Table 4.
Regression analysis for happiness and sleep.
Table 5.
Regression analysis for happiness and sleep stratified with sex.