Abstract: Provided is an intraocular lens exchanger for moving a foldable intraocular lens (IOL), the intraocular lens exchanger including: an outer tube having a first passage formed in a forward/rearward direction; an inner tube disposed to be movable along the first passage and having a second passage formed in the forward/rearward direction; and a variable tube extending from a front end of the inner tube to form a variable passage connected to the second passage, in which the variable tube has an extension part having a width that increases forward in an unconstrained state in which the variable tube is not positioned in the first passage, and the extension part is provided to be elastically deformed when the unconstrained state changes to a constrained state in which at least a part of the extension part is received in the first passage.

Abstract: Proposed are a laser feedback device for irradiation to an eyeball and a laser feedback method using the same, the laser feedback device comprising: a guide beam irradiation unit for irradiating a guide beam to an eyeball of a patient; a reflection unit positioned adjacent to the guide beam irradiation unit; a laser irradiation unit for irradiating a laser into the eyeball; an image acquisition unit that receives a reflection beam reflected from the eyeball and refracted through the reflection unit and acquires at least one retinal image of the retina of the eyeball; and an image mapping unit that maps at least one retinal image to construct a macular image which is a full image of the macula of the eyeball.

Abstract: Provided is an intraocular lens exchanger for moving a foldable intraocular lens (IOL), the intraocular lens exchanger including: an outer tube having a first passage formed in a forward/rearward direction; an inner tube disposed to be movable along the first passage and having a second passage formed in the forward/rearward direction; and a variable tube extending from a front end of the inner tube to form a variable passage connected to the second passage, in which the variable tube has an extension part having a width that increases forward in an unconstrained state in which the variable tube is not positioned in the first passage, and the extension part is provided to be elastically deformed when the unconstrained state changes to a constrained state in which at least a part of the extension part is received in the first passage.