At least once in their career, even the most adept cataract surgeons
have likely made the capsulotomy slightly too large for the lens. With eyes having varied iris and pupil sizes, it is easy to misgauge the size of the rhexis.
Though utilizing a femtosecond laser
will ensure a consistently centered capsulotomy, determining the precise size of the incision can still be challenging.
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The benefits of using a capsulorhexis marker
In my practice, I have adopted a tool that can simplify and add predictability to the process: the Kellen CCC Marker 5.5mm
from Corza Ophthalmology, a business unit of Corza Medical (formerly Katena Instruments). The Kellen CCC Marker consists of a marking ring with four non-marking alignment pegs and is constructed from stainless steel for durability. The marker is similar to a cookie cutter in that it makes a circular impression on the epithelium to serve as a guide.
By tracing this mark, you can gain consistency in the circularity and size of the capsulotomy. In my professional opinion, this can provide a superior incision to place the intraocular lens (IOL)
compared to other techniques to achieve an optimal 360° overlap. During the procedure, by using Utrata capsulorhexis forceps with one hand and holding the globe central with the other, I can achieve minimal parallax error.
Note: Though BSS Plus Sterile Irrigating Solution makes it slightly more difficult to see the epithelial impression made by the Kellen marker, it is still visible enough to work with during surgery.
One of the tracks we leave as surgeons is the size and shape of the capsulotomy. With the Kellen CCC Marker 5.5mm, it has given me the confidence to create a consistent circle that meets my expectations every time, which can guarantee a precision capsulotomy
and proper IOL placement, regardless of the size of the eye.
The functionality and predictability of this marker have made it an indispensable tool in my operating room.
Disclaimer: The Kellen CCC Marker 5.5mm from Corza Ophthalmology, a business unit of Corza Medical (formerly Katena Instruments), is meant to serve as an adjunct tool to assist physicians in impressing a circular pattern on the cornea to serve as a guide for performing a 5.5 to 6mm diameter capsulorhexis. The medical opinions and views expressed in this article are those of Gary Wörtz, MD.