Eyebright herb can easily be found in most health or natural food stores. It is available in teabags, loose dried leaves, powder, liquid, tablets, capsules, tincture, and oil. It is also occasionally packaged with dried bilberries which is also used in the treatment of eye related conditions.
Learner's definition of PREDICTIVE. [more predictive; most predictive] formal. : making it possible to predict what will happen : useful in the prediction of something. The test does not have much predictive value. High blood pressure is predictive of future heart problems.
This is a predictive confidence interval in the sense that if one uses a quantile range of 100p%, then on repeated applications of this computation, the future observation X n + 1 {\displaystyle X_{n+1}} will fall in the predicted interval 100p% of the time.