One Lens at a Time?

[Andrew MacLean]

Rosemary

It is not entirely true to say that monocular vision leaves us without any deapth perception. We learn to "sample" with our head, or eye in different positions and our brains are very good at guaging distance. Where this braks down in in the need to judge un centemeters the distanceto a table or tray at close proximity.

It is true that binocular vision is the most efficient and consistent method for judging relative distances at near and far ranges, but the monocular sight that many people have is more than enough to let them tell how far away a hazare, or car, or even Pedestrain may be.

A problem for binocular and monocular people is if the depth perception is in conflict with other visual stimuli. Therefore a shall adult may make a crossing seem a long way away, when in fact it is quite close, but this sort of optical illusion tricks two eyes every bit as easily as it tricks one.

Andrew

[Sweet]

I have to agree here as i have never had any problems with gauging distance or perception with only one eye. I manage very well in work to see in the finest detail and i drive and park extremely well if i say so myself! I think that we learn to adapt under different conditions and am thinking that i may find it difficult as i will hopefully have two eyes in the future when all the stitches are removed! Then i will either have to learn to live with it or i will have to wear a patch!! LMAO!! Kinda defeats the whole reasoning in having a graft done in the first place!!

Sweet X x X

[GarethB]

Rosemary,

I think you are right in some respects changing from binocular to monocular vision when driving is easier if yuo know the visual cues for driving.

From the hazard perception tests new drivers do now, I know they find it hard picking up on visual cues. However I do not know how long it would take someone with monocular vision.

To me it would make an interesting experiment.

[Sweet]

Hehe with one eye i only missed one light on the visual test and the optom testing me was impressed. Maybe i am just more aware as i know i don't have two eyes to watch where i'm going!!

Sweet X x X

[GarethB]

When we strat learning something that is when we are aware of distances. Once that experience builds up, it comes as second nature.

When I train people I have to make a real effort to think what I am doing so I pass on all my knowledge.

When Sweet is dealing with an emergency at A&E she is probably doing all the right stuff but on a conceous level talking to the patient rather than conceously thinking about all the other stuff that has to be done at the same time.