Dear Hemant, Good to know that you have started to focus on your career at early level. Answering u question wise. Question 1)So tell me how much percent i have to gain in 12 class ? Answer 1) 12th Std Percentage do not matter for being a heart surgeon but for optometry it does minimum 50% criteria is kept for bsc optometry. Question 2 .I also want to be an heart Surgeon so what study i have to do.. Answer 2) The following is the pathway for being a Heart surgeon....... MBBS (UG) > MS (General Surgery) (PG) > Mch (CVTS) (PhD). All of which have Entrance Examination for admission....... Question 3 - and also tell which is good one optometry or a surgeon Please tell me the best one.... Answer 3 - Out of them which is better i would say Heart Surgeon, but instead of choosing whats the trend of the world is one must choose the appropriate career as per as ones choice. Wishing you all the very best for your career ! Jatin K (CR @Career360 )

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