April Fool's Day as a Teacher - Page 2

DarkPlasmaBall

United States44743 Posts

April 04 2016 15:09 GMT

#21

On April 04 2016 22:37 brian wrote:
wait now I need to know if there's a more standardized measurement of eyesight

I guess technically it would be a unit ratio of "your distance (in feet) / average distance (in feet)":

"20/20 vision (or really, 20/20 visual acuity) is considered "normal" vision, meaning you can read at 20 feet a letter that most human beings should be able to read at 20 feet." ~ http://www.allaboutvision.com/eye-test/

I suppose that someone could convert that to meters, but saying you have 6.1/6.1 vision just doesn't have the same ring to it

brian

United States9626 Posts

April 04 2016 15:16 GMT

#22

yea but so is the rest of the world using FREEDOM UNITS in referencing their own eye sight?

DarkPlasmaBall

United States44743 Posts

April 04 2016 15:24 GMT

#23

On April 05 2016 00:16 brian wrote:
yea but so is the rest of the world using FREEDOM UNITS in referencing their own eye sight?

Probably not; I wonder how other countries' citizens describe their imperfect vision.

OtherWorld

France17333 Posts

April 04 2016 18:58 GMT

#24

Same as you, with a scale going from 0/10 up to 10+/10 per eye (Monoyer scale in France), which corresponds to some complicated stuff. Basically, having 10/10 on one eye means that your eye can read a letter which is 7,25 mm high, 5 meters away from it (with perfect black on white contrast conditions ofc).

DarkPlasmaBall

United States44743 Posts

April 04 2016 19:31 GMT

#25

On April 05 2016 03:58 OtherWorld wrote:
Same as you, with a scale going from 0/10 up to 10+/10 per eye (Monoyer scale in France), which corresponds to some complicated stuff. Basically, having 10/10 on one eye means that your eye can read a letter which is 7,25 mm high, 5 meters away from it (with perfect black on white contrast conditions ofc).

Awesome, thanks!

Mr. Wiggles

Canada5894 Posts

April 05 2016 04:24 GMT

#26

It's maybe a little funny, but even though my optometrist uses vision charts, I actually have no idea what my visual acuity level is with them. I've only ever had to refer to it in terms of dioptres when buying lenses or contacts (i.e. -2.25).

https://en.wikipedia.org/wiki/Visual_acuity
https://en.wikipedia.org/wiki/Dioptre

Those pages were an interesting little distraction to go read, anyway.

That midterm email is evil though.

DarkPlasmaBall

United States44743 Posts

April 05 2016 10:16 GMT

#27

On April 05 2016 13:24 Mr. Wiggles wrote:
It's maybe a little funny, but even though my optometrist uses vision charts, I actually have no idea what my visual acuity level is with them. I've only ever had to refer to it in terms of dioptres when buying lenses or contacts (i.e. -2.25).

https://en.wikipedia.org/wiki/Visual_acuity
https://en.wikipedia.org/wiki/Dioptre

Those pages were an interesting little distraction to go read, anyway.

That midterm email is evil though.

I'll see my college students in a few hours, so I'll get to hear more of their reactions haha

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