Two drops (0.1 mL) of 0.5% ketorolac tromethamine ophthalmic solution, instilled into the eyes of patients 12 hours and 1 hour prior to cataract extraction achieved measurable levels in 8 of 9 patients' eyes (mean ketorolac concentration 95 ng/mL aqueous humor, range 40 to 170 ng/mL).
Restoring the pH of the scalp may help prevent hair loss from dandruff, bacteria or fungus. Every liquid substance on Earth has a pH, or an acid-base, measurement. Very few substances are neutral; most are either acidic, such as vinegar, or basic, such as bleach.
pH affects carbonic anhydrase in a sigmoidal fashion. The higher the pH, the more active the enzyme is (since it is in the optimal conditions for deprotonation). 1) The binding of zinc lowers the pKa of water from 15.7 to 7, generating a hydroxide ion (OH) to attack carbon dioxide.