Measuring phacoemulsification groove depth using probe tip d
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Aim
To describe a useful technique utilizing lens thickness from biometric data as well as phacoemulsification (phaco) probe tip dimensions, in order to more accurately determine safe groove depth during divide and conquer techniques for cataract surgery.

Methods
Single center, selection of patients for cataract surgery deemed low risk and suitable for surgical teaching cases. Individual lens thickness measurements from biometry were calculated with known phaco tip dimensions to give an individualized safe number of phaco tip depths for grooving during divide and conquer. This technique was then applied during cataract surgery.

Results
Utilization of this technique allows calculation and determination of an appropriate number of phaco tip depths of grooving for each individual patient. This technique was applied as a teaching tool for surgical trainees, with subsequent successful safe cataract surgeries completed. No posterior capsule ruptures were noted for these cases.

Conclusion
By combining the biometric measurements of an individual patient’s lens thickness together with known phaco tip dimensions, individualized safe groove depths can be theoretically determined and applied during divide and conquer cataract surgery.

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