True,
vaccines are small doses of the virus in which the body will fight off and learn from it. your body next time will know how to fight the disease, making you immune.
A Vitrectomy is the removal of the vitreous fluid of the posterior chamber of the eye and replacing it with a clear solution. This is often done in the posterior chamber because the vitreous humor sometimes get tangled with other major parts of the eye.
Because every life has potential. Every human being has the ability to contribute something great to this world and when you drag yourself through the mud you just make it harder to find that potential. Trust me life is hard, but realizing that you have to potential makes me wants to continue and try to unlock it.