This is a personal venture of mine but very important.
I suffer from eye floaters that I definitely didn’t have 5 years ago despite what some doctors say about everyone having them. Quite bothersome. They are translucent and appear quite large when moving my eyes around but an optometrist said they were very tiny in reality when observing them through a ‘scope’ and probably appeared to me as large because of refraction.
I was given a €500 gift card by a relative but the catch is that it can only be spent at an photography/ optics shop online. I thought perhaps I could capture my floaters with a Nikon D3100 but I’m not sure if the lens is powerful.
Here’s a paper on studying floaters, and the various methods researchers have used to study them. These don’t look as if they’d be easy to replicate at home:
Huang, L. C., Yee, K. M., Wa, C. A., Nguyen, J. N., Sadun, A. A., & Sebag, J. (2014). VB 8. Vitreous Floaters and Vision: Current Concepts and Management Paradigms. In Vitreous (pp. 771-788). Springer New York.