Study　of　the　kinetic　visual　field　of　humans　and　the　effect　of　aging　upon　it　is　strongly　needed　in　order　to　identify　the　cause　of　traffic　accidents　while　focusing　on　these　characteristics.　In　this　paper,　differences　in　the　kinetic　visual　field　between　younger　and　older　people　were　measured　and　analyzed　after　identifying　problems　with　the　conventional　definition　of　the　kinetic　visual　field　and　modifying　the　kinetic　perimeter　system.　In　addition,　by　measuring　simple　reaction　time　when　the　kinetic　visual　field　is　measured　in　order　to　minimize　the　effect　of　individual　differences　in　response　time,　it　was　confirmed　that　older　people　are　greatly　affected　by　deteriorating　visual　performance　caused　by　aging,　particularly　in　upward　visual　field　rather　than　downward　visual　fields　in　all　target　conditions.　Visual　field　angle　reductions　in　the　temple　sides　of　upward　visual　fields　were　of　particular　note.