Diabetes directly affects eyes

 We know that heart pumps the blood and blood vessels carry it

throughout our body this way all cells ( group of cells are tissues

---> group of tissues are organs and all organs arranged to make the

human body) of the body gets the nutrients: blood supplies nutrients

to all tissues. that's how life goes on.

Nutrients or cells' food is absorbed in the blood from the stomach/
intestine from what we eat. so a lot of different nutrients absorb
from our food through stomach/ intestine into blood vessels and then
pumped to the body tissues but not all nutrients are 
needed by all tissues rather than different organs require a different
kind of nutrients for instance heart's pumping needs more calcium
while kidneys require sodium/ potassium etc.

All organs in our body are enveloped by a membrane that allows
specifically those nutrients which are needed by that particular
organ, these membranes also control the amount of nutrients too and
don't allow more than needed by the organs; a kind of barrier for
whatever enters the organs.

unfortunately as the level of sugar rises in the blood the influx of sugar in the eyes also increase, that extra amount of sugar makes a thin film on retina causing dim vision if diabetes is untreated and blood sugar levels stay high for longer period of time then accumulation intensifies causing blurred vision which may proceed to partial or total blindness

Eyes are the most precious gift from God, keep them safe, if you feel even mild dim vision rush to physician to figure out what is wrong with the vision. Of course it is wise to keep a regular check on health by visiting physician even if you have a good health.

FDA has recently approved a continuous blood glucose monitoring system, named FreeStyle Libre that continuously monitors glucose levels in the blood.

If you have any question please feel free to ask in the comments 

Don't forget my other article ; High Blood Pressure directly affects eyes 

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