The field of vision — the range that can be seen with the eyes; one's visual field.
強い光で一時的に視野が狭くなった。
My field of vision temporarily narrowed due to the strong light.
彼は病気のため視野の一部を失った。
He lost part of his field of vision because of the illness.
運転中は広い視野を保つことが重要だ。
It's important to maintain a wide field of vision while driving.
One's outlook or horizons — the range of perspective, knowledge, or experience a person has.
留学経験は私の視野を大きく広げてくれた。
Studying abroad greatly broadened my horizons.
視野が狭いと新しいアイデアに気づきにくい。
If your outlook is narrow, it's hard to notice new ideas.
リーダーには広い視野が求められる。
Leaders are expected to have a broad outlook.