We know how lucky dogs are when it comes to cataracts, because the eye profession didn't think they generate much surgical income, and allowed them to benefit from cataract reversal eyedrops just for dogs. Now, fish have joined the lucky dogs and cats. The American School in Taiwan did a project last year in which they successfully cleared fish cataracts using a chitosan nanoparticle suspension of a soluble sterol, 25-OH cholesterol, in eyedrops. But it was no more than an academic exercise to prove it could be done. The project team say they have no plans to take it any further to help humans. Whatever. They must have thought it important to help fish see where they're swimming. At least, fish no longer have to have cataract surgery any more! Human compassion will never cease to amaze me!