<prompt> Rosette cataract is caused by:DiabetesAfter cataractTraumaGauchers disease  <response>: Ans. c Trauma Ref: Parsons Disease of Eye 19thpg. 283; Basak Ophthalmology 2ndpg. 82, 305.CATARACTContusion cataractContusion of the eyeball will produce a rosette-shaped subcapsular opacity on the anterior surface of the lens. It will normally remain unchanged but will migrate into the deeper cortex over time due to the apposition of new fibers.Lamellar Zonular cataractIt is the most common developmental cataract.Opacities are located in one layer of lens fibers, often as riders only in the equatorial region.Nuclear cataractIn the fourth decade of life, the pressure of peripheral lens fiber production causes hardening of the entire lens, especially the nucleus. The nucleus takes on a yellowish brown color brunescent nuclear cataract. This may range from reddish brown to nearly black discoloration of the entire lens black cataract. Nuclear cataracts develop very slowly. Due to the lenticular myopia, near vision even without eyeglasses remains good for a long time.Cortical cataractNuclear cataracts are often associated with changes in the lens cortex. It is interesting to note that patients with cortical cataracts tend to have acquired hyperopia in contrast to patients with nuclear cataracts, who tend to be myopic. Berlins edema commotio retinae is a condition caused by blunt injury to the eye. Berlins edema is an acute traumatic maculopathy characterized by retinal opacification. Histopathologic studies have shown that it is characterized by disruption of photoreceptor outer segments and retinal pigment epithelial damage. OCT an effective tool for management of patients with posterior segment trauma. OCT is more comfortable for the traumatized patient than other imaging techniques because it is a non-contact method utilizing infrared illumination. OCT is also highly sensitive in identifying subtle anatomic changes.Educational points: CataractFeatureAfter-cataract Post cap opacityElschnig pearl Rings of SoemerringsBrownCataract brunescensNuclearhard cataractBlack cataractCataract nigransNuclearhard cataractBlue dot cataract PunctateMost common congenital cataractComplicated cataractBread crumb appearanceConcussion cataractRossete-shaped cataractCoronary cataractDevelopmental cataract at pubertyChalcosisSunflower cataractDiabetic cataractSnow flakestorm appearanceHypermature senile cataractMorgagnian cataractLamellarZonularRidersMyotonic dystrophyCataract with polychromatic dots Christmas-tree 