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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]
Macular degeneration causes vision loss and increases with age, affecting nearly 12% of those above the age of 80. [58] This degeneration is caused by systemic changes in the circulation of waste products and by the growth of abnormal vessels around the retina. [59] Other visual diseases that often appear with age are cataracts and glaucoma.
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.
We found the best technology for adults over 65 at CES this year. From AI aids to ‘aging in place’ smart home solutions, the annual tech show kept older users in mind.
The expected, maximum, and minimum amplitudes of accommodation in diopters (D) for a corrected patient of a given age can be estimated using Hofstetter's formulas: expected amplitude (D) = 18.5 − 0.3 × (age in years); maximum amplitude (D) = 25 − 0.4 × (age in years); minimum amplitude (D) = 15 − 0.25 × (age in years).
Surveys show that 40 to 70 percent of those 65 years old and older suffer from chronic sleep disturbances. [2] The elderly tend to go to bed early in the evening and wake earlier in the morning than younger adults. Furthermore, the elderly often wake several times throughout the night and have difficulty falling asleep.