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Cross Dominance - Different Lens Tint

Discussion in 'Uncategorized Threads' started by paul7177, Apr 20, 2007.

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  1. paul7177

    paul7177 Member

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    Has anyone been able to solve cross dominance by using a different lens tint, perhaps darker, for the dominant eye?
     
  2. phirel

    phirel TS Member

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    I tried and it did not work for me. Tape does work.

    Pat Ireland
     
  3. MTA Tom

    MTA Tom Active Member

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    Didn't work for me, either.
     
  4. dognduck

    dognduck TS Member

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    Dec 31, 2006
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    ive tried too and same as above didnt work
     
  5. jakearoo

    jakearoo Active Member

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    C'mon. Really. One piece of scotch tape as big as your finger tip and the problem is solved. Honest. Jake
     
  6. Capt. Jack

    Capt. Jack TS Member

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    Nov 29, 2008
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    I'm experimenting with a setup like you are asking about. I am right eye dominant, but the left eye does take over occasionally. I use a corrected lens on the right side in light target orange with a -.5 diopter correction and a plano dark purple lens on the left side. It seems to help me, but you have to get used to the comments "hey you got your lenses mixed up".

    Jack Foster Tucson
     
  7. gdbabin

    gdbabin TS Member

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    Tape or Magic Dots--works every time, at a great price!

    Guy
     
  8. idoc

    idoc Member

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    Jan 29, 1998
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    Hope this works. The key here is the section that says " the effect of monocular blurr and decreased luminance via filter". A neutral density filter for our purposes is simply a grey sunglass lens. Basically if you see the histograms there was a dramatic shift in dominancy with the grey lens. Decreasing the vision all the way to 20/200(legal blindness) made no difference. I have been playing with this for the last two years with mixed results. I can demonstrate a dramatic difference with certain people...........Rich


    Eye dominance in the visual cortex using functional MRI at 1.5 T: an alternative method.

    Liu GT, Miki A, Goldsmith Z, van Erp TG, Francis E, Quinn GE, Modestino EJ, Bonhomme GR, Haselgrove JC.

    Children's Hospital of Philadelphia, Functional MRI Research Unit, and the University of Pennsylvania School of Medicine, Philadelphia 19104, USA. gliu@mail.med.upenn.edu

    PURPOSE: To develop a functional MRI method for producing eye dominance histograms in humans at 1.5 Tesla (T). METHODS: In the first set of experiments, 8 normal persons were tested. The eye dominance of each voxel within the person's visually activated primary visual cortex was determined with Student t statistics during a left eye versus right eye contrast. Eye dominance distribution was plotted, and the mean t statistic was used to describe the histogram asymmetry. In the second set of experiments, the effect of monocular optical blur and decreased luminance via filter was studied, and eye dominance distributions were similarly determined. RESULTS: The eye dominance histogram in each of the 8 normals was approximately symmetric; the average mean t value was +0.13. All 4 subjects with the right eye blurred had histograms approximately symmetric or slightly shifted toward the left eye (average mean t = +0.56), and all 4 subjects with the right eye filtered had histograms dramatically shifted toward the left eye (average mean t = +2.22). The average mean t for the group with the right eye filtered was significantly different from that of the other 2 groups (P <.0001). CONCLUSIONS: With noninvasive methods in normal persons, functional magnetic resonance imaging techniques at 1.5 T were able to characterize the distribution of eye dominance of voxels in primary visual cortex, based upon their t statistic in the left eye versus right eye contrast. The method is sensitive to filtering but relatively insensitive to visual blur. This approach may have a future use in the study of amblyopia in humans.

    Publication Types:
    Research Support, Non-U.S. Gov't
     
  9. Old Ranger

    Old Ranger Member

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    Oct 30, 2006
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    If you wear contact lenses, try not wearing the lens for the non-target eye. The blurred vision accomplishes the same thing as the tape. Just be careful not to trip over the gun rack on the way back to the clubhouse.
     
  10. perga1

    perga1 Active Member

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    I have found the light gray lens in the off eye works. JRM
     
  11. idoc

    idoc Member

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    JRM,

    What seems to make the biggest difference is the amount of light transmission between the two lenses. The bigger the difference the better............Rich
     
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