I would consider a leaky bleb to be more likely by orders of magnitude than any significant degree of ciliary body shutdown. Fla. More details, please Hypotony at any stage in the life cycle of a bleb, especially after cataract surgery, requires mental gymnastics. I doubt a cyclodialysis cleft is present, because the IOP was not low in the immediate postoperative period and the patient did well for several months. In order to help in a more meaningful way, I need more information. Hypotony is not uncommon 3 years or so after filter with Mitomycin-C, when the bleb breaks down and hypotony ensues.
Leaks can be very tricky and difficult to detect.
Eyes with zero IOP often have leaks, but they are hard to find because the IOP is zero and there is intermittent flow into the bleb. If you are convinced it is not the bleb, I would look for the obvious causes of hyposecretion. The next most common cause is topical beta-blocker therapy in the fellow eye, which crosses over and reduces aqueous production. I always make sure they aren t placing glaucoma drops in the eye with zero IOP. 5. A rare cause is anterior annular choroidal effusion with decreased aqueous production.