What I do is I place the chinchillas hind legs against my chest with my palm against the back of the chin's head and forefinger and thumb wrapping around the head/neck to come together right under the lower jaw. This leaves one hand free to direct the medication. Eye gel is very potent medication, so you don't need to get a whole lot in there...probably only about an 1/8th of an inch. I also use a little bit of the gel to smooth the hair away from the eye...it helps in keeping irritants away and out of the eye. Good luck!