One-piece implant for drainage of aqueous humor with higher or lower speed depending on the pressure gradient between the interior and the exterior of the eye, the implant being made of a material which does not adhere to eye tissue and comprising three parts: a first part (A) suitable to be located in the anterior chamber of the eye, a second part (B) that has a sheet form and is suitable to puncture the corneal limbus to be arranged between the cornea and the sclera, and a third part (C) having a sheet form suitable to be located outside of the eye, wherein the implant is made of stainless steel, silicone, polytetrafluoroethylene, polypropylene, or a biocompatible metal or alloy; wherein the second part (B) forms a space upwardly between the cornea and the upper surface of the implant, and a space downwardly between the sclera and the lower surface of the implant wherein these spaces create a one direction path through which the aqueous humor will flow depending on the pressure gradient between the interior and the exterior of the eye; characterised in that the first part (A) is provided with an upper base and a double triangle shape protruding in a direction perpendicular to the upper base which allows for introducing and removing the implant with ease while at the same time keeping the implant fixed in position. a first part (A) suitable to be located in the anterior chamber of the eye, a second part (B) that has a sheet form and is suitable to puncture the corneal limbus to be arranged between the cornea and the sclera, and a third part (C) having a sheet form suitable to be located outside of the eye, wherein the implant is made of stainless steel, silicone, polytetrafluoroethylene, polypropylene, or a biocompatible metal or alloy; wherein the second part (B) forms a space upwardly between the cornea and the upper surface of the implant, and a space downwardly between the sclera and the lower surface of the implant wherein these spaces create a one direction path through which the aqueous humor will flow depending on the pressure gradient between the interior and the exterior of the eye; characterised in that the first part (A) is provided with an upper base and a double triangle shape protruding in a direction perpendicular to the upper base which allows for introducing and removing the implant with ease while at the same time keeping the implant fixed in position. wherein the implant is made of stainless steel, silicone, polytetrafluoroethylene, polypropylene, or a biocompatible metal or alloy; wherein the second part (B) forms a space upwardly between the cornea and the upper surface of the implant, and a space downwardly between the sclera and the lower surface of the implant wherein these spaces create a one direction path through which the aqueous humor will flow depending on the pressure gradient between the interior and the exterior of the eye; characterised in that the first part (A) is provided with an upper base and a double triangle shape protruding in a direction perpendicular to the upper base which allows for introducing and removing the implant with ease while at the same time keeping the implant fixed in position. <EOS>