[header] How to tell if your cat is blind [title] Look out for clumsiness. [step] Watch to see how your cat gets around furniture or if it misjudges jumping onto furniture. Also note if your cat bumps into walls or furniture that it previously knew to walk around. 
Acting clumsy in spaces where it spends a lot of time can be a sign of failing sight or blindness. [substeps] Another sign to watch for is if your cat is tripping on stairs or slipping when trying to jump up to its favorite place.