Paramedical

The career opportunities in all these fields are wide and huge in demand both in India and abroad.
Optometrists can work as post-secondary teachers, occupational/industrial safety programs, consultants in the eye care industry or do research in optometry colleges. Optometrists can also set up their own private clinics and work independently. They can also choose a career in sports vision, public health and government service or community health centers.
Ophthalmologist may choose to set himself up in private practice, as a solo practitioner or as part of a medical group. As an Ophthalmologist, you can work as a public health employee, professor in the medical universities, military doctor, & as an employee of a clinic, hospital and government agencies.

You can go for an MPhil (regular) after completing Masters from IGNOU. Every institution has its own criteria but since IGNOU being the recognized Open University, its degree is acceptable by almost all other regular institutions.
Recently, UGC has announced that candidates who score 55% in their Masters are eligible for MPhil from UGC recognized universities. So you need to focus on getting at-least 60% in Masters to be in the safe zone (Only if you are a general candidate).
I would like to give you an advice that please go for Central Universities for M.Phil as the faculty in such universities is mind blowing. JNU, DU, BHU, etc. are there in this list.