A cystitome is not an ophthalmic procedure
but is included in the "Ophthalmic
Procedures" section because it is an implement used in ophthalmology.
A cystitome is a very small specialised knife used to
cut the lens capsule of the eye
when performing an extracapsular cataract
extraction (i.e. removal of the cataract-affected lens only, with
the lens capsule left in place) or a capsulotomy.
A cystitome is suited to this purpose as it is appropriately
small in size and has a curved or hooked blade ideal for this particular
This section includes short definitions of clinical and surgical procedures
concerning the eyes and human visual system. For definitions of other
terms in this category, choose from the list to the left.
Other related pages include the diagram
of the eye, and definitions
of parts of the eye, a description
of the human retina, and the section about disorders
of the eye and visual system.