Been shooting with a red dot for about a year and have been dealing with a slight astigmatism. I receved some advise that really helped. Try viewing the dot through the small hole on the rear sight. The small hole must filter out enough light to make the dot crisp. I set my red dot at lower 1/3 and keep the rear site down for <50 yards and for 50+ pop up rear site and take the shot with the crisper dot. YMMV.
Bookmarks