Why are some things considered "bad for the eyes" without proof thatthey are?

Reading lying down
Reading in moving vehicles
Reading in dim light
Reading fine print
Reading close to the eyes
Bright lights
Artificial lights
Sudden fluctuations of light
the list goes on.

On 4 May, 18:05, "atl...@gmail.com" <atl...@gmail.com> wrote:
> On May 4, 10:29*am, Just another dude <misa...@googlemail.com> wrote:
>
> > Reading lying down
> > Reading in moving vehicles
> > Reading in dim light
> > Reading fine print
> > Reading close to the eyes
> > Bright lights
> > Artificial lights
> > Sudden fluctuations of light
> > the list goes on.
>
> Why don't you ask Bates SPAMMER.

Funny thing is he RECOMMENDED all these things.

...