I haven't tried it yet, I was just mentioning the studies I'd come across. You can read this one here, which found that taking 3 pills a day reduced or completely removed floaters in 70% of patients after 3 months, with a B-scan ocular ultrasound and a visual inspection seeming to confirm the results (not placebo).

That study used 95 mg papain and 95 mg ficin enzymes in addition to bromelain, which makes it a bit more effective, but Bromelain alone also seems to work at reducing the floaters from what I'd read elsewhere.

According to the study (I may be interpreting this wrong, but I'll take my best whack at it), matrix metalloproteinases (MMPs) contained within the enzymes are able to reach and pass through the Blood-retinal barrier (BRB), and thus act upon the floaters (collegen).

Furthermore, matrix metalloproteinases (MMPs), which belong to the proteinases that could cut and absorb ECM, discorded collagens, and SVOs. In particular, MMP-2 and MMP-9 are primarily found in bromelain, papain, and ficin [57]. Free radical scavenging activities were found in bromelain (MMP-2), papain (MMP-2 and MMP-9), and ficin (MMP-2 and MMP-9). Simultaneously, MMPs could resect proliferative tissues and compromised collagens, which is beneficial for cleaning VH-induced SVOs under oxidase stress [58,59]. The blood-retinal barrier (BRB) consists of the inner and outer components and forms tight junctions between the retinal capillary endothelial cells and pigment epithelial cells that maintains a balanced microenvironment and prevents certain substances from entering the retina. Yang et al. found that MMP-2 and MMP-9 could reduce the tight junction proteins (i.e., claudin-5 and occlusion) and the integrity of BRB [60]. Thus, MFEs may cross BRB after taking and be absorbed by the small intestines.