my AIR is 49K, is there any chance to get MS ophthal in private colleges in general category....???

Going by previous All India cut offs and your rank, you may decent chances in Santosh Medical College and it is a Private Medical College. That is the closest chance you have in Opthamology. Having said that, this is 2019 data and cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, difficulty of the exam, and no.of seats available for each specialisation. Please try our College predictor to check the possibility of other specialisations with you rank across India:  https://medicine.careers360.com/neet-pg-all-india-college-predictor