Talk to Ent Specialist on My Right Eyes View Not Clear

A few days ago, I was working at a place when I suddenly saw a black spot in my right eye, which disappeared after a short while. After that, my vision became blurry, as if I was seeing through water. This mostly went away within two days, but then the same thing happened again after two more days. Now it's been about ten days, and my vision is still blurry in the same way. I have used eye drops from here and also got some sent from Pakistan, but nothing has made a difference.