Problem not diagnosed yet. Dint worked.

I had fever on 12 March. I went for RTPCR test and tested positive. My symptoms were fever that lasted just two days, mild cough and extreme weakness. I consulated the Dr and my CT scan value was 0/25. I recovered. But I have a symptom which I had during covid also and is still there. Whenever I look at anything, I feel a blinking sensation. It was hard for me to explain but it is somewhat like when there is mild voltage fluctuation and the bulb flickers. It is consistent throughout the day. I shared with Dr and I went to an eye specialist as well as a psychiatrist. I was prescribed - 0.25 lens and I got my glasses. I  shared this with the eye Dr and he prescribed me Zincovit for 15 days and  Carboxymethylcellulose drop. I again went back to him after 15 days as there was no relief. I have been prescribed Nurokind Forte and Sodium Hyaluronate Drops. It has been 7 days. But there is still no relief. I took the medication by the Psychiatrist as well for 20 days but dint worked.