Visual Field Test is a free browser-based home perimetry tool inspired by clinic visual field testing. It maps blind spots and peripheral vision one eye at a time in about five minutes per eye, saves results so you can compare them over time, and gives plain-language AI summaries you can share with your eye doctor. It is a screening and tracking aid, not a diagnosis, and does not replace an eye exam. A free account covers your first tests; an optional paid plan ($19.99/month) adds ongoing history.