Retinal oriented queries. All respects.

I would like to break it down in points so that question is properly addressed in all respects. Thanks. A)If a person gets hit in the eye but the retinal exam show no tears or detachment, then does it mean that vitreous jelly has not been compromised at all due to trauma? B) can retinal exam also detect how the jelly is performing and if there is any breakdown in that. C) if there are no eye floaters after injury, is it possible that these people may start getting floaters 2-3 or 5 years later while still being a young adult due to the acceleration from trauma despite of normal retinal exam at time of injury. (NOT CONSIDERING NATURAL OLD AGE RELATED FLOATERS) D) is hit to the eye ever responsible as a cause of chronic dryness in that one particular eye by creating tear film displacement or anything of that sort?