PMost people are used to reading news or searching for information on the internet, while some elders might have difficulty using computers due to eye conditions or low education.

Comparing people to elders doesn’t make sense since elders are people. But “most people” or “many people” would work.

FTake, for example, my mother-in-law who is 75.

Your original sentence lacks a main verb.

She has suffered macular degeneration for over decades.

“For decades” means for at least two decades, although it usually means three or more decades. If she’s 75 now, the degeneration needs to have started in her early 50s for “decades” to be correct, but the next sentence says it started in her 60s.

She is unable to read words correctly on thea computer, so she generally watches programs on television.

Currently, the television rating iss are very low, and most of prefer using the internet on the computers.

Currently, the television rating iss are very low, and most of us prefer ubrowsing the internet on theour computers.

People are used to reading news or searching for information on the internet, while some elders might have difficulty using computers due to eye conditions or low education(*).

I wonder if you might mean "low computer literacy" as even highly educated (i.e. via formal education) individuals can struggle to understand technology.

Despite the fact that she is a professional clinician, her eyes degenerated in her 60s, forcing her to cease work and stay at home.

This statement suggests that she, being a clinician, should not suffer from eye degeneration, nor should she work from home, but the correlation between these three ideas is unclear.