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Old 06-04-2016, 16:39   #1
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No vision in one eye -- what optical solution is best?

Is there anyone here with experience in this? What is the best solution for a sailor with zero vision in one eye? Are binoculars workable at all? Is a spotting scope usable or a better solution?
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Old 06-04-2016, 16:47   #2
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Re: No vision in one eye -- what optical solution is best?

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Is there anyone here with experience in this? What is the best solution for a sailor with zero vision in one eye? Are binoculars workable at all? Is a spotting scope usable or a better solution?
It's an unfortunate Club I am also a member of.

I've been looking at some good value monoculars.

I'll see if I can find a link to something suitable.
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Old 06-04-2016, 16:48   #3
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Re: No vision in one eye -- what optical solution is best?

I'm a vet and have several friends with one eye. The only problem they seem to have is distance. Some have used my binoculars w/o comment and I know a few hunt with rifle scopes. Sometimes in daylight I close one eye when using a sextant. How could that be different than just having one eye. Buy a Quartermaster's Long Glass on Ebay.
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Old 06-04-2016, 16:48   #4
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Re: No vision in one eye -- what optical solution is best?

Got to keep turning the binoculars over and looking through each side in turn.

Otherwise you get uneven wear of the lenses
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Old 06-04-2016, 16:55   #5
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Re: No vision in one eye -- what optical solution is best?

This is the one I was thinking of trying:

Barska 7x42 WP Deep Sea Monocular with Internal Rangefinder and Compass - Walmart.com

Same price on Amazon. With a 6mm exit, it should be bright enough for older eyes.

PS Probably the same OEM that make optics for the likes of Celestron, etc.
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Old 06-04-2016, 16:56   #6
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Re: No vision in one eye -- what optical solution is best?

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Got to keep turning the binoculars over and looking through each side in turn.

Otherwise you get uneven wear of the lenses

LMAO!
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Old 06-04-2016, 17:06   #7
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Re: No vision in one eye -- what optical solution is best?

Thanks, that looks very useful!
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Old 06-04-2016, 17:15   #8
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Re: No vision in one eye -- what optical solution is best?

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Thanks, that looks very useful!
You're welcome.

The odds of getting good coatings and prisms with good glass is very good, from what I have seen of optics from such sources (Simmons, Bushnell, Celestron, Sky Watcher, etc.).
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Old 06-04-2016, 17:24   #9
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Re: No vision in one eye -- what optical solution is best?

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This is the one I was thinking of trying:

Barska 7x42 WP Deep Sea Monocular with Internal Rangefinder and Compass - Walmart.com

Same price on Amazon. With a 6mm exit, it should be bright enough for older eyes.

PS Probably the same OEM that make optics for the likes of Celestron, etc.
That is a pretty cool looking thing for someone with 2 old malfunctioning eyes! It is now on my wish list.
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Old 06-04-2016, 17:35   #10
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Re: No vision in one eye -- what optical solution is best?

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That is a pretty cool looking thing for someone with 2 old malfunctioning eyes! It is now on my wish list.
As soon as I have a boat address to get deliveries, one is going on my first order Don.

So if you want to wait and get some hands on feedback . . . .
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Old 06-04-2016, 21:14   #11
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Re: No vision in one eye -- what optical solution is best?

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Is there anyone here with experience in this? What is the best solution for a sailor with zero vision in one eye? Are binoculars workable at all? Is a spotting scope usable or a better solution?
I'm sure a monocular is a visionary idea but on a boat I find I'm seldom the only one who wants/ needs magnification, so I use a trusty pair of Nikon 7/50 binos the crew can use too. Carrying a monocular seems a bit redundant unless you have double vision issues or something else. I remember Fujinon binos having the compass in the left side only which was useless for me though rated highest by Practical Sailor at the time. Ticked me off!

My biggest problem is the sad and terrible habit of only cleaning the right lens of my glasses and binos, which has led to some nasty criticism by times, usually from a better half. But really, who wasn't to clean unnecessarily? Does this guy look happy to you?
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Old 06-04-2016, 22:00   #12
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Re: No vision in one eye -- what optical solution is best?

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Is there anyone here with experience in this? What is the best solution for a sailor with zero vision in one eye? Are binoculars workable at all? Is a spotting scope usable or a better solution?
Doesn't fizz here. Just get a good pair of binoculars and you'll see as well as two-eyed people, perhaps except for the compass that Brob2 points out.

Seriously, one-eyed people see distance exactly as well as two-eyed people, in actual practice. That's because they see distance the same way. Two eyed people do not use the separation of their two eyes to see distance. That separation is too small to be of use. They use their lifetime experience perceiving how things move behind nearer things, and perceiving distance from the size of things. When you're driving down the road and you see a tree behind a sign, you instinctively watch how the tree moves in relation to the sign to know how far away it is--both two-eyed and one-eyed people.

One-eyed people can't pass a laboratory test for two-eyedness.

That one-eyed people can't see distance is an urban legend. It's a strongly ingrained urban legend, so that people who lose the sight of one eye think they must honor it. Well, there is trauma and upset, but with time it doesn't fizz.

Enjoy yourself sailing.
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Old 07-04-2016, 05:45   #13
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Re: No vision in one eye -- what optical solution is best?

Greetings and welcome aboard the CF, Dwejra Bay.
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Old 07-04-2016, 06:02   #14
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Re: No vision in one eye -- what optical solution is best?

On exit pupils, which you seem to understand. Given that you only have one eye, you're brain is getting significantly less light, & thus image, to process, than folks who have 2 eyes. On the order of 15-20%+.
So getting the best glass (& coatings) that you can, makes tha much more sense.

And if it helps, I wrote quite a bit about; glass, coatings, & quality of manufacture (of binos) a while back, here Binoculars? Which ones? Heeeellllpppp!
Plus, there's a Part II to it in the same thread, with virtually the same header. Here Binoculars? Which ones? Heeeellllpppp!

Also, & again, this may be common knowledge, but in going to a spotting scope, you'll have a Lot more optical power than you can use, due to the motion of the boat. As most spotting scopes are designed to resolve small images at a great distance.

But if you get into a real pinch, I can likely dig up some quality monoculars (fixed & variable power), with ranging scales etc.

PS: Sorry to hear about the loss of vision. The same happened to a Close family member, so I understand a little of it.
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Old 07-04-2016, 09:28   #15
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Re: No vision in one eye -- what optical solution is best?

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Got to keep turning the binoculars over and looking through each side in turn.



Otherwise you get uneven wear of the lenses

Tried that....one minute the object was huge, next it was tiny!


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