Why does Cannabis make our eyes red?
“Interestingly enough the main
reason our eyes become red after smoking Cannabis is also the main reason why
Cannabis is becoming renowned for its treatment of glaucoma. Basically Cannabis
reduces blood pressure, which in turn causes blood vessels and capillaries to
dilate. The ocular capillaries dilate which increases the flow of blood to the
eyes and this is what naturally reduces intra-ocular pressure. A lot of people
will argue that this is not a good idea and red eyes surely must be a sign of a
problem.
Some people will tell you that
Cannabis sets your brain on fire and this is why your eyes go red. Just so you know…alcohol does the exact same
thing because alcohol is also a vaso dilator. What ii can tell you is that the
red eyes effect of Cannabis is short lived just like the psychedelic effects,
the laughing and the increased appetite, ii honestly cannot remember when last
someone commented on me having red eyes, except maybe when ii was testing BHO
products but that is another story. The
reality is that the stronger the THC strain the redder your eyes will be but as
said before this is also short lived. Some people will even say that actually
the weaker the THC strain the more red the eyes…so yes everyone is different,
every eye is different and indeed every Cannabis plant is different. So for
example a person can smoke a low THC strain one day and have little to no eye
redness, while the very next day their eyes may be blood shot after eating a
high THC strain edible product.
This also explains why red
eyes can still occur even in the absence of smoke proving that it is not the
smoke which makes our eyes red but the actual Cannabinoids. Personally
ii would take red eyes over blindness any day. So
increased blood flow creates the redness, while the decrease in ocular pressure
is the same effect which benefits glaucoma patients.”
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