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  2. Macular degeneration - Wikipedia

    en.wikipedia.org/wiki/Macular_degeneration

    It most commonly occurs in people over the age of fifty and in the United States is the most common cause of vision loss in this age group. [ 1 ] [ 3 ] About 0.4% of people between 50 and 60 have the disease, while it occurs in 0.7% of people 60 to 70, 2.3% of those 70 to 80, and nearly 12% of people over 80 years old.

  3. Myopia - Wikipedia

    en.wikipedia.org/wiki/Myopia

    A study of 2,523 children in grades 1 to 8 (age, 5–17 years) found nearly one in 10 (9%) have at least −0.75 diopters of myopia. [148] In this study, 13% had at least +1.25 D hyperopia (farsightedness), and 28% had at least 1.00-D difference between the two principal meridians (cycloplegic autorefraction) of astigmatism .

  4. Cataract - Wikipedia

    en.wikipedia.org/wiki/Cataract

    In the United States, age-related lens changes have been reported in 42% between the ages of 52 and 64, [70] 60% between the ages 65 and 74, [71] and 91% between the ages of 75 and 85. [70] Cataracts affect nearly 22 million Americans age 40 and older. By age 80, more than half of all Americans have cataracts.

  5. Visual acuity - Wikipedia

    en.wikipedia.org/wiki/Visual_acuity

    Normal individuals have an acuity of 6/4 or better (depending on age and other factors). In the expression 6/x vision, the numerator (6) is the distance in metres between the subject and the chart and the denominator (x) the distance at which a person with 6/6 acuity would discern the same optotype. Thus, 6/12 means that a person with 6/6 ...

  6. Diabetes - Wikipedia

    en.wikipedia.org/wiki/Diabetes

    People with plasma glucose at or above 7.8 mmol/L (140 mg/dL), but not over 11.1 mmol/L (200 mg/dL), two hours after a 75 gram oral glucose load are considered to have impaired glucose tolerance. Of these two prediabetic states, the latter in particular is a major risk factor for progression to full-blown diabetes mellitus, as well as ...

  7. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    In Europe, the average childbearing age has been rising continuously for some time. In Western, Northern, and Southern Europe, first-time mothers are on average 26 to 29 years old, up from 23 to 25 years at the start of the 1970s. In a number of European countries (Spain), the mean age of women at first childbirth has crossed the 30-year threshold.

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