A corneal ulcer is an ocular emergency that raises high-stakes questions about diagnosis and management. Four corneal experts provide a guide to diagnostic differentiators and timely treatment, focusing on the types of ulcers most likely to appear in your waiting room. When a large corneal ulcer is staring you in the face, time is not on your side.
Siderosis, also called welder's lung, is a lung disease caused by breathing in iron or iron oxide dust. Siderosis is considered to be an occupational illness because people breathe in the iron dust at work. The condition usually shows up on X-rays as small, opaque spots on the worker's lungs.
Avascular necrosis can be defined as the death of bone due to a lack of adequate blood flow. When this occurs in the hip it is usually in the ball of the joint, called the femoral head. It causes a dull ache or throbbing in the hip, groin or buttock and pain when walking or moving the hips from side to side.