We examined the pharmaceutical properties of 43 ophthalmic solutions adopted at our hospital. The values obtained varied considerably among the products. Total number of drops per bottle, the volume of each drop, the osmotic ratio to saline and the pH of each product were distributed within the ranges of 92-169 drops, 29.5-53.0μl 0.33-1.38 and 3.7-8.2, respectively. Listing such information onto the package-inserts will be helpful not only for physicians when prescribing such medication but also for patients to improve the rational use of these drugs.
