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a 26 gauge needle bent twice used for incising the anterior capsule of the lens in lens extraction Wire vectis: a loop of wire attached to a stack used to extract cataract affected lenses Irrigating vectis: a small hollow instrument with a used to introduce fluid into the anterior chamber to raise its pressure to aid cataract extraction [2] Canula
Capsulorhexis or capsulorrhexis, and the commonly used technique known as continuous curvilinear capsulorhexis (CCC), is a surgical technique used to remove the central anterior part of the capsule of the lens [1] from the eye during cataract surgery by shear and tensile forces.
A trial frame is a tool used by ophthalmic professionals like ophthalmologists and optometrists. It is basically an adjustable spectacle frame with multiple cells, used to hold corrective lenses, and other accessories in subjective refraction (finding the correct spectacle power) and retinoscopy.
Capsulorhexis is the process of tearing a circular opening in the front membrane of the lens capsule to access the lens within. In phacoemulsification, an anterior continuous curvilinear capsulorhexis is usually used to create a round, smooth-edged opening through which the surgeon can emulsify the lens nucleus, and then implant the intraocular ...
The surgeon removes the anterior face of the capsule that contains the lens inside the eye, tearing a circular opening in the front surface of the lens capsule to access the lens within. A continuous curvilinear capsulorhexis is usually used to create a round, smooth-edged opening through which the lens nucleus can be removed or emulsified and ...
The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter (the diameter of the entrance pupil). A lens typically has a set of marked "f-stops" that the f-number can be set to. A lower f-number denotes a greater aperture which allows more light to reach the film or image sensor.
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