For example in medical datasets, age is often a confounding factor in tests designed to judge the severity of a patient's disease through measures of mobility, eyesight and hearing.
But if, as is much more probable, I've committed an offence through inattention, forgetfulness or poor eyesight, then 75 will be too young for my judge.
Two autobiographies, Clinging to the Wreckage (1982) and Murderers and Other Friends (1994) speak of a life anchored in family, yet lived in a daily dramatic jumble of court cases, plays and television series, sharply observing the vanities of the world through the blur of diminishing eyesight.
They then have to navigate Doug's older brother, who has lost both his eyesight and his legs, through the angry crowd of an antiwar rally.
She qualified as a paediatrician in Leningrad and continued to practise into her sixties, despite the damaged eyesight she had sustained through a war injury.
But wearing protective eyewear in low-light conditions, such as at dawn or dusk, under cloudy skies or through dappled shade, helps preserve healthy eyesight and youthful appearance.
But she also tended him, dealt gently with his family back in Columbus, was an unwicked stepmother to Rosemary, and — most important — shepherded him through the physical world when his eyesight finally gave out.
Siddhartha's words echoed through my mind: "Rhinoceros have terrible eyesight," he had told us on our first day in Chitwan.
TOMS started their journey with giving a pair of shoes to a child in need in the world and have now expanded into eyesight and clean water through their product portfolio.
For animals that drift through the sea without the benefit of eyesight, jellyfish have managed to survive remarkably well.
