The Chang Hydrodissection Cannula 27G is a precision instrument designed for use in cataract surgery, specifically for hydrodissection. The 27-gauge size allows for controlled fluid delivery beneath the lens capsule, facilitating lens separation and aiding in cataract removal. Its fine, delicate design ensures minimal trauma to surrounding tissues, making it ideal for microincision cataract surgery (MICS) and other delicate ophthalmic procedures.