Left eye twitching since last 15 days.

Hello doctor, my left eye is twitching since past 15 days. This is not causing any problem in the vision but is quiet irritating sometimes. Currently I donor wear any glasses or lenses and have no issue with respect to vision just this involuntary twitching is irritating as it is occurring in past 2 weeks . I also checked with a general physician for this issues he suggested it could be due to inadequate sleep which I don't feel so as I had a sleep of 7-8 hrs everyday . He also recommended to electrolyte for 2 days as this also could occur due to salt deficiency I have tried this as well but no success . Please let me know the reason for this and the solution as well. Thanks in advance for the care and support