I can't open my one eye completely. Why?

Background: I'm a 20 year female, I'm 5'5 and 140 lb. I suffer from tonic clonic epilepsy and absent seizures along with iron deficiency anemia. I take 100gms of Zonisamide (night) 200gms of Lamotrigine (morning and night), and 20gms of Clobazam (night) . I take iron, potassium, magnesium, and Melatonin vitamins at night. I also suffer from asthma and GERD/ constant acid reflux

Context:

So this is something I've noticed throughout the past couple of years but never questioned it. But lately Ive been starting to actually question it because my left eye doesn't open all the way compared to my right eye and it still hasn't changed. I've asked people around me and they say my left eye definitely doesn't open completely compared to my right but it's not noticeable unless I actively try to completely open my eyes. I don't know, am I being overly paranoid over something that's not a big deal or is it something else?