I can't see anymore. Used to could blood trail a gut shot deer with a candle. Not so much nowadays.
I'm a blind old fart.
And I'm terrible at tracking.
Thats why I like to drop em where they stand. If they dont drop where they stand they're dead within 20-50 yards. Did back slap one three years ago though he was still alive the next day when we brought in a dog. Other than that I haven't blood trailed a deer in 10+ years.