An intraocular lens inserter comprising: an intraocular lens portion configured to receive an intraocular lens for insertion into an eye of an animal; and an actuator portion comprising: a plunger for delivering the intraocular lens from the intraocular lens portion; a source of pressurized fluid ; an energy storage portion operable to pressurize the source of pressurized fluid; a valve disposed between the plunger and the source of pressurized fluid; an actuator member coupled to the valve for selectively opening a flow path from the source of pressurized fluid to the plunger to control flow of the pressurized fluid to advance the plunger and deliver the intraocular lens at a desired rate; characterized by : a pressure feedback mechanism operable to reduce a maximum valve opening position of the valve as a temperature increases, wherein the pressure feedback mechanism comprises a valve seat movable relative to the valve and coupled to the source of pressurized fluid such that increasing pressure within the source of pressurized fluid causes the valve seat to move relative to the valve and thereby reduce the maximum valve opening position of the valve as temperature rises. an intraocular lens portion configured to receive an intraocular lens for insertion into an eye of an animal; and an actuator portion comprising: a plunger for delivering the intraocular lens from the intraocular lens portion; a source of pressurized fluid ; an energy storage portion operable to pressurize the source of pressurized fluid; a valve disposed between the plunger and the source of pressurized fluid; an actuator member coupled to the valve for selectively opening a flow path from the source of pressurized fluid to the plunger to control flow of the pressurized fluid to advance the plunger and deliver the intraocular lens at a desired rate; characterized by : a pressure feedback mechanism operable to reduce a maximum valve opening position of the valve as a temperature increases, wherein the pressure feedback mechanism comprises a valve seat movable relative to the valve and coupled to the source of pressurized fluid such that increasing pressure within the source of pressurized fluid causes the valve seat to move relative to the valve and thereby reduce the maximum valve opening position of the valve as temperature rises. a plunger for delivering the intraocular lens from the intraocular lens portion; a source of pressurized fluid ; an energy storage portion operable to pressurize the source of pressurized fluid; a valve disposed between the plunger and the source of pressurized fluid; an actuator member coupled to the valve for selectively opening a flow path from the source of pressurized fluid to the plunger to control flow of the pressurized fluid to advance the plunger and deliver the intraocular lens at a desired rate; characterized by : a pressure feedback mechanism operable to reduce a maximum valve opening position of the valve as a temperature increases, wherein the pressure feedback mechanism comprises a valve seat movable relative to the valve and coupled to the source of pressurized fluid such that increasing pressure within the source of pressurized fluid causes the valve seat to move relative to the valve and thereby reduce the maximum valve opening position of the valve as temperature rises. <EOS>