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Related Experiment Video

Updated: Mar 13, 2026

A Novel Capsulorhexis Technique Using Shearing Forces with Cystotome

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Continuous Curvilinear Capsulorhexis Performed With the VERUS Ophthalmic Caliper.

Malik Y Kahook, Robert J Cionni, Michael J Taravella

Journal of Refractive Surgery (Thorofare, N.J. : 1995)

|October 11, 2016

Summary

The VERUS ophthalmic caliper improves continuous curvilinear capsulorhexis (CCC) outcomes for size, circularity, and centration. While manual CCC is faster, VERUS-assisted CCC offers superior precision in cataract surgery.

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Area of Science:

Ophthalmology
Surgical Technology

Background:

Accurate capsulorhexis is crucial for successful cataract surgery.
Manual continuous curvilinear capsulorhexis (CCC) can have variable outcomes.
Ophthalmic calipers aim to improve CCC precision.

Purpose of the Study:

To compare the effectiveness of the VERUS ophthalmic caliper versus standard manual techniques for CCC.
To evaluate CCC size, circularity, and centration outcomes.
To assess the impact of the VERUS caliper on procedure time.

Main Methods:

Multicenter retrospective case-controlled series review.
Comparison of 40 VERUS-assisted CCC cases with 40 manual CCC cases.
Analysis of capsulorhexis size, circularity, and centration data.

Main Results:

VERUS-assisted CCC demonstrated improved size, circularity, and centration compared to manual CCC (P < .05).
Manual CCC completion time averaged 40 ± 11 seconds.
VERUS-assisted CCC completion time averaged 71 ± 13 seconds (P < .0001).

Conclusions:

The VERUS ophthalmic caliper enhances CCC size, circularity, and centration.
VERUS-assisted CCC provides improved precision over manual techniques.
While manual CCC is quicker, VERUS offers better refractive outcomes through improved capsulorhexis quality.