Statistical Probabilities - S6-E9
Corrected entry: Patrick, the elderly and child-like one of the visiting genetically engineered trio, appears in the background with his reading glasses for ~3 seconds. Mature actors in the 20th century need glasses. Mature genetically enhanced people of the future never wear glasses except that one scene. (00:07:30)
Correction: While that may be generally true, we get an example of that not being the case with Kirk in Star Trek II. (Granted, that's 80 years earlier, but the principle holds up.) McCoy tells Kirk that he would normally administer Retinax V for his presbyopia, but Kirk responds that he's allergic to Retinax, hence McCoy's gift of the reading glasses. It would make sense that whatever treatment is used in the time of DS9, it's very possible that there would be people for whom that is not an option, either due to choice or unique medical concerns.
Garlonuss ★