In Daredevil Vol.1 #25, Matt pretends to be his own (fictitious) twin brother, Mike Murdock. Mike is apparently sighted and makes repeated allusions to the prettiness of his associate, Karen.
In the most recent TV series, Matt pretends to be sighted over the course of several episodes including Blindsided
No, it isn't (currently). A new volume was started some years ago (volume 5, launched in 2016) where Daredevil's identity wasn't public knowledge anymore. The exact reason was voluntarily kept secret for a couple issues.
Reminder: the Purple Man is a powerful villain with psychic abilities. The Purple Children are some kids who share similar powers, and ...