An ophthalmic surgical instrument includes an elongated shaft and a snare configured to transition between an expanded configuration, in which the snare is sized to encircle lenticular tissue, and a contracted configuration. The snare has a section configured to cooperate with a bottom surface of the elongated shaft to sever the lenticular tissue therebetween upon the snare transitioning toward the contracted configuration.

Apparatus and methods for cataract extraction are disclosed. An extraction device may include a delivery shaft having a lumen and a distal end. The lumen may include a first channel and a second channel diverging at the distal end. A wire may form a loop and extend from the first channel and the second channel. The wire may be movable within the lumen.

Systems and methods are disclosed for monitoring for an occlusion in an aspiration line during an ophthalmic surgical procedure. An ophthalmic surgical system may comprise a first aspiration pump located in a handpiece, a second aspiration pump located away from the handpiece such as in a console, and a pressure sensor located between the first aspiration pump and the second aspiration pump. The pressure sensor is adapted to monitor for an occlusion in the aspiration line upstream of the first aspiration pump. The second aspiration pump may be operated at the same flow rate as the first aspiration pump and/or to maintain a constant pressure between the second aspiration pump and the first aspiration pump. Systems and methods as disclosed allow for a handpiece pump located close to the working tip while providing reliable occlusion detection with a pressure sensor located away from the handpiece.

A self-contained ocular surgery instrument, including a power module having a body presenting a mating coupler and including a compressed gas supply; a fluid reservoir; an aspiration pump; an aspirated material reservoir and a control panel. The mating coupler is structured to receive and couple to at least one module that facilitates performance of an eye surgery task. The compressed gas supply is coupled to the aspiration pump and the aspirated material reservoir is in fluid communication with the aspiration pump to receive aspirated material from the mating coupler. The fluid reservoir is in fluid communication with the mating coupler such that fluid is supplied under pressure to the mating coupler and thus to the at least one module that facilitates performance of an eye surgery task. The control panel is in controlling communication with the compressed gas supply, the aspiration pump and the aspirated material reservoir.

A slit lamp and biomicroscope assembly can include a viewing system including a biomicroscope; an illumination system including a slit lamp with a light source and a light processing system with a first actuator; a positioning system supporting the biomicroscope and the slit lamp and including second and third actuators to position the biomicroscope along horizontal and vertical axes; and a user interface handle. The user interface handle can be graspable by a hand of a user and supported on the positioning system proximate to the biomicroscope such that a user looking into the biomicroscope can reach the user interface handle. The user interface handle can include a plurality of input devices including input devices in communication with the actuators.

An accommodating intraocular lens assembly can include a first lens, a first stanchion, a second lens, and a second stanchion. The first lens can have a first anterior side and a first posterior side. The first stanchion can have a first distal end connected to the first lens and a first base end. The second lens can have a second anterior side and a second posterior side. The second stanchion can have a second distal end connected to the second lens and a second base end. The first lens and the second lens can move laterally relative to one another during contraction of the ciliary muscle in a vertically-extending plane containing the optic axis of the eye and substantially centered in the eye.

A trephination apparatus can include a first member, a blade, and a second member. The first member can include a through-aperture and a first internal chamber. The first member can also include opening to the first internal chamber that can surround the through-aperture in a plane. The blade can have an outwardly-facing male profile at least partially matching the through-aperture and have a cutting edge. The second member can include a first body sized to be received in the through-aperture with the blade. The blade can be positionable between the first body and the female profile at the second opening. The second member can also include a second internal chamber with an opening extending about the aperture axis in the plane with an opening to the first internal chamber.

A vitrectomy probe with a light emitting, visibly discrete traceable probe cap. The light emitting, visibly discrete character of the probe cap may aid a surgeon in tracing the end of a needle of the vitrectomy during a vitrectomy procedure. The probe cap may be of a biocompatible polymer accommodating phosphorescent pigment or of another suitable light source.

A cannula with an augmented frictional surface to enhance physical security thereof. The augmented surface may be of unique morphology with rows or ribs. The ribs may be continuous or individual projections. They may be horizontal or screw-like. In one embodiment of screw-like ribs, rotations during placement and removal of the cannula may be employed.

A vitrectomy probe with a light emitting, visibly discrete traceable probe cap. The light emitting, visibly discrete character of the probe cap may aid a surgeon in tracing the end of a needle of the vitrectomy during a vitrectomy procedure. The probe cap may be of a biocompatible polymer accommodating phosphorescent pigment or of another suitable light source.