After you fire up the barbecue grill, the charcoal briquettes you use as fuel are eventually reduced to a pile of charred remains and ashes. This residue contains recycled plant material and naturally occurring minerals, but it may also contain harmful chemicals.
Burst blood vessel in the eye. Straining, coughing or injuring your eye can sometimes cause a blood vessel to burst on the eye surface, causing a bright red blotch. This is called a subconjunctival haemorrhage.
Hi blood pressure is a cause for concern, and one of the causes of broken blood vessels in the eye is high blood pressure. I suspect you will be put on medication to help reduce your blood pressure and possible be given dietary advice to help keep it down.