Sedana Symptom

**Sedana Symptom** is the name given to a rare phenomenon found in patients who have had cataract surgery. The effect is that on one side of the eye the pupil becomes noticeably smaller than on the other. This condition can occur due to certain surgical procedures that are performed on the eyes.

Story

In 1932, French ophthalmologist Joseph Sedan first discovered this condition in a patient undergoing cataract surgery. Sedan called this unusual phenomenon "retracted pupil syndrome," which represents his first mention of this symptom. Although it had not been heard of for over 50 years, the syndrome has recently been rediscovered in other patients.

Modern medical research associates this phenomenon with the characteristics of human physiology. In a healthy person, the pupils are symmetrical and respond correctly to light, but in some people with certain problems in the nervous system or physical changes in the eye, such as a distorted lens, one pupil may remain "retrograde" - that is, not follow the light. As a result, one eye will see more light than the other, causing one pupil to be smaller than the other. Surgery and associated reasons

Symptom Sedana can occur due to certain cataract surgery or artificial lens implantation. If during these operations there is deformation of the muscle or other structures of the eye, then a situation may arise when one pupil is less exposed to light. This creates an asymmetrical pupil effect and makes the eyes appear uneven.

Thus, saddleback symptoms are the result of poor planning or incorrect surgical intervention. But this does not mean that all operations can cause these problems. Sinuftokboaniya can be associated with the physiological characteristics of the human body, so the chances of Sedan syndrome occurring after any procedure to remove or insert an artificial lens are small. Treatment and consequences

Ophthalmologists usually do not consider the saddleback symptom an indication for canceling surgery. However, if it is discovered during a patient's cataract removal or lens implantation procedure, the surgical plan must be modified to best protect the eye from any potential problems associated with this syndrome. This change often involves using a different implantation method or procedure that can avoid eye displacement. However, too many changes in surgical techniques or additional changes that affect the health of the eye can reduce the success of a particular treatment or impair the functioning of the eye as a whole.