Ahmed glaucoma valve implant: surgical technique and complications

Figures & data

Figure 1 Ahmed glaucoma valve implant.

Notes: (A) Ahmed glaucoma valve implant components; (B) Ahmed glaucoma valve mechanism. V_A presented as velocity of fluid flowing in section A. V_B presented as velocity of fluid flowing in section B.

Table 1 Ahmed glaucoma valve implant available models

Type	Model	Size (mm^2)	Material (plate)
Single plate	S2	184	Polypropylene
Pediatric size	S3	96	Polypropylene
Double plate	B1	364	Polypropylene
Single plate	FP7	184	Silicone
Pediatric size	FP8	96	Silicone
Double plate	FX1	364	Silicone
Single plate	M4	160	Polyethylene
Pars plana	PS2	184	Polypropylene
Pars plana (pediatric)	PS3	96	Polypropylene
Pars plana	PC7	184	Silicone
Pars plana (pediatric)	PC8	96	Silicone

Figure 2 Ahmed glaucoma valve: sutureless implantation technique.

Figure 3 Ahmed glaucoma valve: tube exposure due to conjunctival erosion.