Vitreous body in the frontal parts of the eye (aqueous humour) which is continuously replenished, the gel in the vitreous chamber is stagnant. Therefore, if blood, cells or other byproducts of inflammation get into the vitreous, they will remain there unless removed surgically. These are known as floaters. If the vitreous pulls away from the retina, it is known as a vitreous detachment. As the human body ages, the vitreous often liquefies and may collapse. This is more likely to occur, and occurs much earlier, in eyes that are nearsighted (myopia). It can also occur after injuries to the eye or inflammation
Heirs of the body share some or all of the grantee's ancestry, but do not directly descend from the grantee, may not inherit. When there are no more heirs of the body, the terms of the original grant are expired, and the property becomes extinct (e.g. peerage), or some other criterion for allocating the property to a new possessor must be applied. If the original grant stipulated an alternative formula for succession upon exhaustion of heirs, that formula is immediately applicable. Thus, if a peerage is granted to "heirs of the body of John Smith, failing which, to heirs general", the title would pass