What is couching in lens luxation management?

What is couching in lens luxation management?

• A. Manual repositioning of the lens posteriorly
• B. Surgical extraction of lens
• C. Laser repositioning
• D. Observation only

Answer: (A)

Couching is a historical method for managing a dislocated or cataractous lens by physically moving the lens away from the visual axis toward the back of the eye. In lens luxation, this is done by applying manual pressure to push the lens posteriorly into the vitreous cavity, effectively clearing the pupil without removing the lens. This is why the description of manually repositioning the lens posteriorly best matches couching. It differs from surgical extraction, which removes the lens; laser repositioning, which isn’t the traditional couching technique; and observation alone, which does not move the lens. While couching can restore some vision by clearing the visual axis, it carries risks such as vitreous complications and retinal issues and is largely historical today.

Couching is a historical method for managing a dislocated or cataractous lens by physically moving the lens away from the visual axis toward the back of the eye. In lens luxation, this is done by applying manual pressure to push the lens posteriorly into the vitreous cavity, effectively clearing the pupil without removing the lens. This is why the description of manually repositioning the lens posteriorly best matches couching. It differs from surgical extraction, which removes the lens; laser repositioning, which isn’t the traditional couching technique; and observation alone, which does not move the lens. While couching can restore some vision by clearing the visual axis, it carries risks such as vitreous complications and retinal issues and is largely historical today.