Lens iron deposition

Iron is the most common foreign body in the eye. Foreign bodies in the crystal can form a limited cataract. If the iron foreign body is small, it can exist in the crystal for many years without obvious reaction. Iron can be oxidized in the eye and gradually in the eye. Diffusion and formation of eye rust deposits, including corneal, iris, lens, retinal rust deposits, and eventually blindness. The rust deposits of the eyeballs are related to the size and location of foreign bodies in the eyes. Swim later. There are small brownish yellow dots under the anterior capsule of the lens in the early stage, and brown rust spots under the anterior capsule in the later stage. It must be seen after the pupil is enlarged in the early stage. The late stage of crystal fiber degeneration gradually develops into a total cataract, and eventually the crystal is rolled up, Due to the dislocation of the suspensory ligament, the dislocation of the crystal causes cataracts in rust deposits. The reason is that crystal epithelial cells degenerate after absorbing iron, and new fiber growth is blocked. At this time, even if the cataract is removed, vision cannot be restored quickly. Lens rust deposit is a clinical symptom of traumatic cataract. Direct or indirect mechanical damage to the lens can cause turbid changes, called traumatic cataract. Patients are more common in children, young men and soldiers. There are three common types, namely cataracts caused by blunt contusion, explosion injury and penetrating eye injury. Due to different injury factors and local manifestations, this disease has many names. In most cases, a clear history of trauma can be mentioned, however, traumatic cataracts that "deny a history of trauma" must not be ignored, especially in infants and young children.