How do I work through a phobia to give medicine to my daughter?

My daughter (9 months) has conjunctivitis. I've been given drops for her eyes.When I was around 8/9 I had hot candle wax poured in my eye. Ever since I've not been able to do anything at all with anything going near my eyes, or anyone elses. I tried to help my partner do it earlier today. I had to close my eyes and pretend I was somewhere else to fight the urge to be sick.I'm on my own with her all day tomorrow as my partner is out. I can't sleep right now. I keep thinking about having to give her the drops and it's making me sick.I know this probably sounds stupid to everyone but I have no idea how I'm going to do it. It's not her fault I'm so fucked up with that stuff. I'm also worried my eldest (3) is going to pick up the fact that I'm freaking out about it and she'll pick up this stupid phobia as well via /r/Parenting https://ift.tt/2BN9JDq