Been shooting all my life, I'm 58 years old , been wearing glasses (bi-focals) since I was 30, my dad was a Marine and taught me to shoot irons. typically I hunt with scoped rifles but have several with peep sights... Chester 94, Marlin 375, Sporter 308 Winchester... as long as I can hit a six inch paper plate (about 125-150 yards) I'll use irons in tight timber, but use the scoped rifles for further shooting... clear cuts, 200+ yards. Cant use buck-horn type iron sights at all any more!