Pockets of fluid can develop in the back of your eye, causing the gel to pull away from the retina. This happens to everyone over time, and is not harmful. However, sometimes the gel pulls on a thin or weak area of the retina, and causes a tear or hole.
George Washington, the first president, was inaugurated in 1789 after a unanimous vote of the Electoral College. William Henry Harrison spent the shortest time in office with 32 days in 1841.
They were able to be president because Article II of the Constitution established an exception that these men qualified for. Martin Van Buren is recognized as the first president born in the US, but this is questionable since the Revolution did not end until 1783. Arguably, John Tyler, born in 1790, was the first president born in the US.. Chester A Arthur was born near the US/Canada border, and although nobody knows for sure, a rumor states that he was born a Canadian, without his parents being aware of it.