EYE DROP CONTAINER DELIVERY - A SOURCE OF RESPONSE VARIATION

Variations in response to topically applied ocular drugs (e.g. mydriat ics and cycloplegics) and their possible aetiology have been studied p reviously. It appears that individual patient differences, external in fluencing factors and the characteristics of the particular drug may a ll govern the response. One factor worthy of note in this regard is th e possibility of variation in the drug volume instilled. Single-use ey e drop containers known as Minims(R) are commonly used during ophthalm ic diagnostic procedures. However, in this study the drop volume was s hown to vary considerably, depending upon the angle at which the Minim s(R) container was held, the particular drug and the number of drops p reviously expelled from the unit. (C) 1997 The College of Optometrists .