You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Following an eye trauma, a patient presents 4 days later with proptosis and pain in the eye. On examination, he has chemosis, conjunctival congestion and extraocular muscle palsies. The investigation of choice to arrive at a diagnosis is: and explain in detail?
Ans. d. Intra arterial digital subtraction angiography Symptoms ofproptosis and pain in the eye following an eye trauma with chemosis, conjunctival congestion and extraocular muscle palsies on examination is typical picture of post traumatic carotico-cavernous fistula. The investigation of choice to arrive at a diagnosis is intra-arterial digital subtraction angiography.