ChatterBank2 mins ago
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I wear spectacles - my vision seems to have declined .
Now i've found out that if i have the arms of the spectacles resting under my ears , instead of over my ears ; then the vision improves markedly .( don't laugh )
What on earth is happening here - anyone any ideas ?
Now i've found out that if i have the arms of the spectacles resting under my ears , instead of over my ears ; then the vision improves markedly .( don't laugh )
What on earth is happening here - anyone any ideas ?
Answers
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For more on marking an answer as the "Best Answer", please visit our FAQ.Refraction - the altered angle of view through the lens slightly alters the refraction characteristics. Try raising the arms to the same degree as you are lowering them, I would expect a similar effect. This assumes your spectacles are monofocal. "Strengthening" the lens(es)will do the same for "standard" use.
Strengthening=stronger; Standard use=as intended. You may have astigmatism - in any case, see your optician if the glasses are inadequate. If you are short-sighted: There is actually such a thing as over-sharp vision so no need to go for that - there is some evidence that short-sightedness sometimes worsens faster if the eyes are not needing to work on focussing. Also, there is some evidence that hard contact lenses help to hold back deterioration of the same. All of this with the case-by-case proviso.
If the legs are under the ears the lower half of the lenses will be further away from the eye and the upper half will be nearer.
The shape of the lens determines how the image is focused. If the lens is angled, rather than vertical, the focal point will move.
That new focal point co-incides with the change in your vision so it has improved the clarity.
You clearly need a new prescription.
The shape of the lens determines how the image is focused. If the lens is angled, rather than vertical, the focal point will move.
That new focal point co-incides with the change in your vision so it has improved the clarity.
You clearly need a new prescription.