Charge maintained by chloride entering RBC (chloride shift) Hydrogen ions combine with haemoglobin to form haemoglobonic acid. Hydrogencarbonate ions Releasing oxygen The partial pressure of oxygen (also called oxygen tension) of respiring tissues is lower than the lungs.
Screening is a process for evaluating the possible presence of a particular problem. The outcome is normally a simple yes or no. Assessment is a process for defining the nature of that problem, determining a diagnosis, and developing specific treatment recommendations for addressing the problem or diagnosis.
The functional vision assessment is a pivotal assessment for children who have low vision. It is an assessment of how a child uses the vision he or she has in everyday life, so it is usually not done with children who are totally blind or have light perception only.