Parotid gland slightly swollen left side

Hello dr..greetings  Myself Sridhar,30 years male  Past 5-6 years ago,I was accidently got hit to my parotid gland left side (near Ear,jaw, cheek region)while I was playing on of my accidently hit my cheek area...for few days I felt my felt ear was clogged,blocked,was not able to hear properly ...after few days I was able to hear ...but I have ear pain,noise sensitivity,facial pain,left side head pain,left side electric shock sensation,left side vision blur,pulled sensation at my left eye temple area n tightness on left face area when I smile,I can't smile fully due to it...tear production is less on eye side eye...left neck is tight, 1) Eye examation is normal 2)Dental examation is normal Visited Neurologist n neurosurgeon.had MRI of brain..which is normal ... Neurosurgeon said everything is normal ,jaw x-ray is normal,cervical spine c4,c5,c6,c7 shows loss of cervical curve ... My eye doctors said it's not jaw issue,its Parotid gland..n prescribed CERPODOMIX tablets...but no improvem