3 ms·

I'm not saying this to be a jerk, but because I honestly wonder if this is the explanation. Could you be farsighted? When people say "perfect eye sight" they

by finnh 9y ago

I'm not saying this to be a jerk, but because I honestly wonder if this is the explanation. Could you be farsighted? When people say "perfect eye sight" they (typically) mean 20/20 or better, but that's for distance vision. So if you can see things in the distance way better than your friends, that doesn't (necessarily) mean that your up-close vision is great. (I'm on a 27" 5K monitor, so a good bit larger but not absurdly so, also at arms' length, and while I agree that the font is on the small side it is (to me) crazy huge at 175%).

isatty 9y ago
Wait are you saying that an optometrist certified 20/20 is not perfect vision? I'm curious because I don't have perfect vision (I'm at -0.5 on both eyes) but I can read most things just fine (just not far away stuff). I find that websites regularly have small font sizes. I use a 2K UHD monitors (U2515H x2) at an arms length and I zoom both HN and reddit to read them with ease.
- robin_reala 9y ago
  20/20 is ‘normal’ vision. To quote Wikipedia: A reference value above which visual acuity is considered normal is called 6/6 vision, the USC equivalent of which is 20/20 vision: At 6 meters or 20 feet, a human eye with that performance is able to separate contours that are approximately 1.75 mm apart.[4] Vision of 6/12 corresponds to lower, vision of 6/3 to better performance. Normal individuals have an acuity of 6/4 or better (depending on age and other factors).
  - finnh 9y ago
    I'm not drawing distinctions between "normal" and "perfect" here. My point is that 20/20 refers to what you can see at a distance of 20 feet, which is different from what you can see at a distance of 2 feet. Huge numbers of senior citizens have 20/20 or better vision but still can't read a computer monitor without reading glasses.
    - deleted 9y ago
      [deleted]
    - red75prime 9y ago
      Presbyopia. Human's eyes gradually lose ability to focus on nearby things. Past 40 it begins to be a nuisance.

by finnh 9y ago

isatty 9y ago

Wait are you saying that an optometrist certified 20/20 is not perfect vision? I'm curious because I don't have perfect vision (I'm at -0.5 on both eyes) but I can read most things just fine (just not far away stuff). I find that websites regularly have small font sizes. I use a 2K UHD monitors (U2515H x2) at an arms length and I zoom both HN and reddit to read them with ease.

robin_reala 9y ago
20/20 is ‘normal’ vision. To quote Wikipedia: A reference value above which visual acuity is considered normal is called 6/6 vision, the USC equivalent of which is 20/20 vision: At 6 meters or 20 feet, a human eye with that performance is able to separate contours that are approximately 1.75 mm apart.[4] Vision of 6/12 corresponds to lower, vision of 6/3 to better performance. Normal individuals have an acuity of 6/4 or better (depending on age and other factors).
- finnh 9y ago
  I'm not drawing distinctions between "normal" and "perfect" here. My point is that 20/20 refers to what you can see at a distance of 20 feet, which is different from what you can see at a distance of 2 feet. Huge numbers of senior citizens have 20/20 or better vision but still can't read a computer monitor without reading glasses.
  - deleted 9y ago
    [deleted]
  - red75prime 9y ago
    Presbyopia. Human's eyes gradually lose ability to focus on nearby things. Past 40 it begins to be a nuisance.