Final answer:
The visual impairment related to aging and the inability to focus on near objects is presbyopia, which occurs as the eye's lens becomes less elastic and the controlling muscles weaken.
Step-by-step explanation:
The age-related visual impairment associated with the inability to focus on near objects is presbyopia. Presbyopia is a common vision problem that typically begins to affect people starting in middle adulthood, around the ages of 40 to 50. The lens of the eye becomes less elastic with age, and the muscles that control the lens may also lose strength, leading to difficulties with focusing on close objects. Symptoms of presbyopia include eyestrain, trouble seeing in dim light, and problems with reading small print. Corrective lenses are often used to mitigate the effects of presbyopia since surgical correction has not been as successful as for other refractive errors such as myopia or hyperopia.
On the other hand, myopia, also known as nearsightedness, is a condition where distant objects appear blurred because their images are focused in front of the retina, not on it. Meanwhile, presbycusis is a hearing impairment in older adults and is unrelated to vision, while otitis media is an inflammation of the middle ear.