Hi Dr. Akanksha Verma,

Colleges offering Diploma in Ophthalmology in Kolkata are as follows:-

• Medical College, Kolkata
• Nilratan Sircar Medical College, Kolkata
• Regional Institute of Ophthalmology, Kolkata
• Ramakrishna Mission Seva Pratishthan, Kolkata
• Dr KR Adhikary College of Optometry and Paramedical Technology, Kalyani

You may refer to this link for more information about Diploma in Ophthalmology Colleges in Kolkata.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!