Syneresis also occurs secondary to previous intraocular inflammation. (italiangreyhound.org)
If untreated, the cataracts cause intraocular inflammation called Lens - Induced Uveitis (LIU) that harms the eyes by causing glaucoma (increased intraocular pressure). (animaleyecare.net)
In worst case scenarios, cataracts form rapidly in both eyes, the lens capsules split / rupture, severe LIU occurs resulting in glaucoma and severe painful intraocular inflammation (phacoclastic uveitis), and both eyes need to be surgically removed. (animaleyecare.net)