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SURGICAL TECHNIQUE
Year : 2017  |  Volume : 65  |  Issue : 12  |  Page : 1415-1418

Terminal chop: New technique for full thickness nuclear segmentation in mature hard cataract


1 R P Eye Institute, Cataract and Refractive Services, New Delhi, India
2 Deen Dayal Upadhyay Hospital, Department of Ophthalmology, New Delhi, India
3 L V Prasad Eye Institute, Vitreo Retina Services, Bhubaneswar, Odisha, India

Correspondence Address:
Dr. Rajendra Prasad
C-6, 6201, Vasant Kunj, New Delhi - 110 070
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijo.IJO_650_17

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We describe an efficient technique, “Terminal Chop,” for full thickness nuclear segmentation in mature hard cataracts. Terminal chop utilizes the principle of secondary rock breakage system with stress concentration to break these hard nuclei. In this technique consonant to drag picks, a specially designed chopper “Terminator” is used to initiate a unique dispersive mechanical force to create a full thickness nuclear crack (crack formation) at the weakest soft and thin equator, which automatically traverses through the center and to the equator on the other side. Lateral separation of both the instruments placed at the equator, propagates the initial full thickness nuclear crack (crack propagation), breaking the entire nucleus into two complete pieces including the posterior plate. The direction of splitting follows the cleavage plane in a more direct manner, thus requiring least fracture force, least manipulation and stress, much lower than compressive stress, causing minimal trauma, and highly satisfactory postoperative results.


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