

Recently had lens replacement surgery (AMA?) which gave me 20/15 far sight vision. Seeing things up close is difficult (need reading glasses) but making out details from far away objects is unreal. It’s like having HD vision.
Anywho, 20/20 simply means that you can make out details at 20 feet that the average person can make out at 20 feet. In my case, I can make out details at 20 feet that most people can only make out at 15 feet.
If you have 20/40 vision, it means that what most people can make out at 40 ft, you can only make it out of it were 20 feet away.
Now you know how that works.
Well, not being a dog, I can’t really say for certain, but I’m sure your puppy will be fine. For me, there was little to no pain at all, even during recovery. Only mild discomfort, and I mean very mild. It’s outpatient surgery and the actual procedure only takes a few minutes (for one eye). It was really no big deal at all