Anesthesia for cataract surgery: Recent trends

Possible explanations are: peripheral and superior cornea is less sensitive than central cornea, dark-brown eyed Indians, Chinese, and blacks have a corneal sensitivity that is four times less than blue-eyed Caucasians, people in developing countries like India are more exposed to ultraviolet rays which may result in a significant loss of corneal sensitivity. The concept of providing different pharmacological agents for balanced anesthesia, i.e., for analgesia, muscle relaxant, abolishment of all reflexes including somatic reflexes, and somnolence has removed the use of very potent, toxic, and long-acting agents.