difficult to administer [SEP] the product is hard to use all eye drop products i have used just require squeezing the product to produce the drops this product requires both holding it over the eye depressing a button at the top of the tube to generate the drops so you have to use both hands just to generate the drops which is awkward leaves no hand free to open the eye the better to apply the drops perhaps dexterous individuals can do it all with one hand but not me so in my opinion it is difficult to use i have no comment on the quality of the effectiveness of the drops