Table 2. The differences between XEN gel implant and trabeculectomy.

Variable	XEN	Trabeculectomy
Lowering IOP	Less	Better
Reducing No. of medications	Same	Same
Conjunctival injury	Almost none	Yes
Scleral flap	No	Yes
Anterior chamber	Stabilization	Instability
Peripheral iridectomy	No	Yes
Wound size	Smaller	Larger
Operation complexity	Simpler	More complex
Postoperative inflammation	Less	More
Scarring	Almost none	More