A mass airflow sensor. A mass (air) flow sensor (MAF) is used to find out the mass flowrate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure.
Over time, scar tissue that forms from bleeding can cause the retina to detach from the wall of the eye (retinal detachment) and cause loss of vision. Severe proliferative retinopathy may be treated with laser surgery in order to save vision.
Bleeding in the white of your eye can be caused by injuries, forceful coughing, vomiting or sneezing, or straining to have a bowel movement. Being on blood thinners such as aspirin or warfarin may increase the risk. However, most of the time, there is no clear cause for the bleeding.