Does anyone know if hgh can improve your vision? Have been using hgh for about 9 months now 3 unit per day, 5 days per week. I am in my mid 50's have worn contacts since my early 20's and almost overnight my prescription changed and my vision has improved. worked out my whole life 5'10" 190lbs bodyfat approx. 9%. Vision can improve according to eye doc, but I found it kind of strange.