Which eye do you observe with?

Starkler (Geoff) · #1 11-02-2005, 01:23 PM

Just for curiousities sake.

ving (David) · #2 11-02-2005, 02:21 PM

observe with my left i do.
and use the finder with my right.

sorry... its your avatar that does it!

mch62 (Mark) · #3 11-02-2005, 02:47 PM

I voted RH left eye only because of astigmatism in the right eye.
I actually keep going to the right eye but have to remember to use the left.
Didn't know that I had astigmatism until a check . It only prevails when using low low power eyepieces.
My near and far sightedness is moderatly OK . It's actually the astigmatisim that is the problem.
When I got a new low power eyepiece a couple of years back I thought it was faulty with spikes coming from all angles , until I changed to the left eye and bugger me , they disappeared.

Funny this as a few newbies that have looked through my scopes in the past and don't wear glasses normally , have since found that they have astigmatism in either or both eyes from an observation session and then an eye check.
I wonder sometimes when you read EP and scope tests and reviews about aberrations seen in the view as to weather the reviewer has ever had an eye test done of late.

RAJAH235 · #4 11-02-2005, 03:23 PM

Hi Guys, Mark you have a *VERRRY INTERRESTIIINNGG* point there!!! Maybe they should use the equipment/test gear and technicians that they used to check HST mirror?

Striker (Tony) · #5 11-02-2005, 05:15 PM

Well said Mark...but next time use words we can understand....lol

silvinator · #6 11-02-2005, 05:36 PM

that one vote was me

honestly, it's been so long since I've looked through an eyepiece (that was attached to a scope before all you buggers jump in!) that I simply cannot remember which eye I use. But I'm sure I just use whichever eye is working at the time, yeah my eyesight is going too.

Starkler (Geoff) · #7 11-02-2005, 06:38 PM

Interesting results so far. 8 vs 8 for left and right eye.

I was curious if there was a correlation between handedness and eyedness

And before anyone makes an obvious lame joke I'll beat you all to it ....

"the eyes have it"

*groans heard all around*

Vermin (Tom) · #8 11-02-2005, 06:39 PM

Even though I have a bigger floater in my right eye I still favour it (right handed too). Just cant seem to get the same detail through the left - it takes much more concentration, too much like hard work.

I can momentarily move the floater slightly by moving my eye rapidly, but it always shifts back just above my fovea.

Comet Hunter · #9 11-02-2005, 08:02 PM

I write with my right hand but view with my left eye.

I'm suprised how many there are that are similar, would of thought there'd be more right/rights and left/lefts

rumples riot · #10 12-02-2005, 05:45 PM

years ago when I did surveying in the army, I was trained to use my left eye if I was right handed. Apparently it has something to do with being left brained if your right handed. I don't know if this is true, but I have always viewed left eyed since then, even though I am right handed.

ving (David) · #11 12-02-2005, 06:26 PM

Ive heard something along those lines too paul... must be some sorta truth in it.

Vermin (Tom) · #12 12-02-2005, 10:11 PM

From here: http://www.brainconnection.com/topic...t/vision-anat2

The optic nerves within each eye meet in the front part of the head at a point called the optic chiasm, which functions like a cloverleaf on a highway. All the fibers from the left half of each retina turn towards the right side of the brain, and the fibers from the right half of each retina turn towards the left side of the brain. The end result of this crossing is that the left half of the brain looks at the right visual world, and the right half of the brain looks at the left visual world.

http://www.brainconnection.com/med/m...nat/990304.gif

Rodstar (Rod) · #13 12-02-2005, 10:35 PM

I hate to be "normal", but looks like I am with 52% of respondents (R +R)!

Has anyone tried the bino-eyepieces? They look pretty bloody expensive, but well worth it?!

Rodstar

Vermin (Tom) · #14 13-02-2005, 01:21 AM

Apparently so. All reviews without exception mention increased detail when using two eyes.

Jonathan · #15 13-02-2005, 01:27 AM

I'm right handed but look through the eyepiece with the left eye. I asked an optometrist about it a few weeks ago and she said it was just my dominant eye.

Vermin (Tom) · #16 13-02-2005, 02:04 AM

What's strange is that having a dominant eye (if the above anatomy information is correct) means the dominance is introduced before the optic chiasm rather than in the processing centres in one half of the brain. i.e. in the optic nerves (or perhaps the chiasm itself). As the processing centres in each half of the brain get information from both eyes.

This would explain the perceived advantage of a binoviewer, because when using a single eye, each half of the brain only receives half the information from the single retina in use.

With limited interconnections between the hemispheres of the brain this is a distinct disadvantage (unless you happen to be of the fairer sex - whom apparently have a greater number of interconnections).

EDIT: after having a bit more of a think about this - eye dominance could still be attributable to the processing centres in the brain, but it would require right eye dominance (for example) in both hemispheres of the brain. This seems less likely but possible. A Google search only showed that this is still not well understood.

Designing an experiment to test which of these theories is more probable is quite simple - all it would take would be a study of individuals with damage to the nerves after the chiasm. A very rare condition.

Kieken · #17 13-02-2005, 08:46 AM

I'm left handed but observe with my right eye. I guess I'm just special

gbeal · #18 13-02-2005, 08:52 AM

Right hand, right eye.
I do use both eyes when I use the finder (straight through), as this gives me a finder image ontop of the natural image, sorta like a Telrad.
Bino viewer as well, with lunar and solar almost exclusively bino. The floaters are not as noticeable, if at all with the bino.
Gary

iceman (Mike) · #19 13-02-2005, 09:25 AM

I'm R+R. I've tried with my left, but I just can't bring it to focus as easily.. like vermin said, it's more hard work. I'm sure it just requires training to strenghten the nerves that focus the left eye..

ving (David) · #20 13-02-2005, 02:23 PM

ok so whos the other lefty here... left handed left eye.

theres 2 and I am one of them