Now that we are into the depths of winter, it is all to evident that grey skies make us feel grey. Some of us are more affected by these seasonal grey skies than others and this is commonly know as Seasonal Affected Disorder. Research in this area has been uncovering more and more evidence that the mighty vitamin D can influence more than our mood. We are now becoming increasing aware that it also affects our eyesight.
It has been commonly assumed that the swatty bookworm with thick glasses is all down to the amount of reading that’s done. It has also been attributed to the bookworm’as shortsighted parents. There is certainly a genetic component to the children of the shortsighted also becoming shortsighted and this is greater when both parents are shortsighted. In fact, we can predict the likelihood of a child becoming shortsighted before it happens at a young age. So by the age of 6 or 7years old, we can fairly accurately say what children will progress to shortsight. Now that short sight can be controlled, we can take measures to prevent it (but that’s a whole other story).
Back to our story: SUNSHINE (or bright daylight) helps prevent short sight. Vitamin D is thought to have an influence as well as ultraviolet B. It would appear there is something to do with how this interacts with the photoreceptors. No doubt the truth will out, in due course. For now, we’ll hope for a crisp, bright winter for the SAD among us.