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Posted: 7/27/2014 3:29:15 AM EDT
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Last night was the first time I was able to use a helmet mounted PVS-14, about one hour.
Up until now I hand held the PVS-14. This morning my head is a tiny bit sore internally. Is this eye strain or having the helmet adjusted too tight, or both. Can the muscles of the eye not used by the NV become sore though it is just focusing on the darkness? Thanks... |
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I've found that using my thermal unit strains my eye badly, even when I only look through it for 10 minutes or so. Some people have suggested that I might have the brightness up too high, and the difference in brightness impinging on my left and right eyes causes fatigue. I haven't worn my NV/helmet rig for more than a couple of minutes, so I can't comment on that setup. |
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A lot of people experience this. Also, do you have a counterweight on your helmet? Neck strain could be contributing to the problem as well.
As KB mentioned, it might be fine focus adjustment. Some are more sensitive to the light difference between the NOD eye and the open eye. I noticed something similar until I went to dual tubes. With duals my ability to detect things has improved, and I enjoy riding my qud around out in the pastures, even at high speeds on moonless nights. So, tell your wife that, for your personal health and safety, you're going to need a second PVS. 
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Yes, that is a problem with some people. I have that issue, though it got better over time - it was never enjoyable. I also have an issue with a complete "flatness" and lack of integration between eyes when wearing a monocle. This has more to do with individual neurology than anything else.
When I have a choice, I use a high spec PVS-7. Pretty much solves those issues, for me. By all means check the focus. cj7Hawk has made a couple of interesting post about tube alignment that might be relevant also. Good Luck! |
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I guess everyone is a little different, I've worn my 14 for hours and never had any eye strain at all.
I wear contacts that correct my vision and I don't have any amber filter. My setup feels very comfortable, just as comfortable as looking around in the day. What type of helmet were you wearing? |
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Thanks for all the help.
(1) I have had 6 eye operations over the years and now have nearsightedness in the "PVS-14 eye" and far sightedness in the eye not used But I am setting the diopter and focus for a really clear view. I was walking out in a orchard where I was looking 10 feet ahead of my path and also looking out a hundred yards or so as I walked and naturally did not refocus all the time. (2) New Team Wendy helmet with great adjustments but it is brand new to me so I"ll try different settings in the future. (3) No counterweight and the set up does feel front heavy. Will try a counter weight next trip out. (4) My wife does not pay attention to my hobbies and does not even know what NV is so if I can cobble up the money eventually for a dual set up I doubt she would know the difference! :) PS- Found a Otis gun cleaning kit I can use a s a temp. Counterweight. The kit is the size of a baseball with a canvas outer cover and a strap on the back that the bungee chord on the back of the helmet can run through. Sett up actually looks like it was made for the back of the helmet but I do not know how much weight to try inside. Any ideas? |
| I also used to get eye/neck/back strains (isn't there a song that goes my neck, my back, you want to........) when I 1st started wearing nods on a helmet. It automatically went away after 2 weeks of usage (about 15 mins every other night & 2-4hrs on weekends). I didn't do anything different. I think it was b/c my body wasn't used to wearing a helmet with couple pounds on top. However, I have never had any eye surgery nor do I wear contacts/ rx glasses. |
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During deer season I would sit in the blind for deer during the day and then switch to pigs and night vision at night. I sat in the blind one night for 8 hours with my left eye behind the pvs14. The eye strain got so bad, I had to quit and call it a night. It literally felt like the back of my eye ball was on fire. I finally got used to it by about mid season and had only slight eye strain.
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