<prompt> Rosette cataract is seen inRadiation injuryThermal injuryDiabetesConcussional injury  <response>: Ans d Concussional injury Ref: kanski 6th ed p 854- 857Concussion injury damage of lens fibres and capsule influx of aqueous humour hydration of lens fibres opacification usually confined to poste-rior subcapsular cortex in a flower shaped manner rosette cataractFeatures of blunt trauma:1. Cornea -comeal abrasionacute comeal edematears in descemets membrane2. Anterior chamber - hyphaema, anterior uveitis3. Pupil - miosis, pigmentary imprinting on anterior lens capsule vossius ring4. Irisiridodialysis D shaped pupiltraumatic aniridia5. Lens -cataract -rosette cataract subluxation dislocation6. Retina -commotion retinae - trauma can lead to cloudy swelling grey ap-pearance choroidal rupture7. Optic nerve -optic neuropathy optic nerve avulsionTypes of cataract -Snow flake cataract- diabetesMyotonic dystrophy- stellate posterior subcapsular cataractAtopic dermatitis- shield like anterior subcapsular cataractComplicated cataract- seen in chronic anterior uveitisOil droplet cataract- galactosemia 