Re: Maybe OT: Eyes and focus....

In message <3f056579$0$135$e4fe514c@dreader4.news.xs4all.nl >, Jeroen
Smaal <jsnews@REMOVE-THIS.zippy.xs4all.nl> writes
>
>"Robert Geake" <rob@thegeakes.co.uk> wrote in message
>news:be3nrr$jrs$1@titan.btinternet.com...
>> Hello Peeps
>>
>> Is it possible to strain the "focus muscle" of the eye such that
>> focus is lost until the muscle repairs?
>>
>> I ask you guys simply because we are allways using one eye
>> which would, in theory, increase the risk of injury.
>
>When a telescope is focused properly, it projects an image at 'infinity'.
>When the eye is focused at infinity, the eye muscles are in a relaxed state
>(for people that do not need glasses, anyway),

So what happens if you _are_ myopic? Or the opposite, whatever that is?
I am myopic but have no problems focussing a telescope.
--
"Roads in space for rockets to travel....four-dimensional roads, curving with
relativity"
Mail to jsilverlight AT merseia.fsnet.co.uk is welcome.
Or visit Jonathan's Space Site http://www.merseia.fsnet.co.uk

	#1
Jonathan Silverlight	Re: Maybe OT: Eyes and focus.... In message <3f056579$0$135$e4fe514c@dreader4.news.xs4all.nl >, Jeroen Smaal <jsnews@REMOVE-THIS.zippy.xs4all.nl> writes > >"Robert Geake" <rob@thegeakes.co.uk> wrote in message >news:be3nrr$jrs$1@titan.btinternet.com... >> Hello Peeps >> >> Is it possible to strain the "focus muscle" of the eye such that >> focus is lost until the muscle repairs? >> >> I ask you guys simply because we are allways using one eye >> which would, in theory, increase the risk of injury. > >When a telescope is focused properly, it projects an image at 'infinity'. >When the eye is focused at infinity, the eye muscles are in a relaxed state >(for people that do not need glasses, anyway), So what happens if you _are_ myopic? Or the opposite, whatever that is? I am myopic but have no problems focussing a telescope. -- "Roads in space for rockets to travel....four-dimensional roads, curving with relativity" Mail to jsilverlight AT merseia.fsnet.co.uk is welcome. Or visit Jonathan's Space Site http://www.merseia.fsnet.co.uk