The eyebrow windows were there to increase the field of view as pilots were used to larger windows from pre-jet aircraft.
Are you sure. Have you looked at the size of windows on the Constellation series?
The eyebrow windows were brought in to provide a better view up - after the TWA Super Constellation climbed up into the underside of the United DC-7 over the Grand Canyon. Similarly side windows began to have that distinctive downward V so that crews had a better view down.
The advent of TCAS WAS the reason for deletion of eyebrow windows - which also resulted in quite a significant reduction in mass (an alumunium panel is a lot lighter than a window and frame) which is why retrofitting became very popular.