PMID: 9159686Apr 1, 1997Paper

The torque and tilt gamble

Journal of Cataract and Refractive Surgery
K D Teichmann, I A Teichmann

Abstract

To analyze possible suture configurations at the haptics of posterior chamber intraocular lenses (IOLs) and estimate the resulting tilt. King Khaled Eye Specialist Hospital, Riyadh, Kingdom of Saudi Arabia. Using a plastic cylinder with two pairs of holes drilled on opposite sides and an IOL with eyelets in the haptics, we determined possible suture configurations and analyzed them for net torque on the IOL haptics that would result in tilting of the optic. We identified 64 combinations of regular and countless combinations of irregular suture configurations. Among the 16 most likely combinations, only 4 were torque-free (or torque neutral), 2 caused maximum tilt, and 10 induced some tilting. Theoretically, torque could be eliminated by radial suture placement, but this is anatomically undesirable, and by positioning the eyelet perpendicular to the haptic, but this is technically difficult. Longer suture bites tended to lessen the torsion on the haptic but increased the risk of the suture looping around the free end of the haptic. Surgeons using scleral fixation of a posterior chamber IOL should be aware of the possibility of inducing tilt and should aim for symmetrical suture configurations at the two haptics.

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Citations

Jan 26, 2000·Journal of Cataract and Refractive Surgery·S K RaoP Padmanabhan
Jun 5, 2001·Current Opinion in Ophthalmology·R L Johnston, D G Charteris
May 21, 2013·Indian Journal of Ophthalmology·Priya Narang, Samir Narang
Jun 22, 1999·Journal of Cataract and Refractive Surgery·C ZetterströmM Jeeves
Dec 21, 2013·Journal of Cataract and Refractive Surgery·Toshihiko OhtaAkira Murakami
Jul 31, 1998·Journal of Cataract and Refractive Surgery·K D Teichmann, I A Teichmann
May 25, 2010·Journal of Cataract and Refractive Surgery·Oren N Fass, Wesley K Herman
Feb 16, 2010·Journal of Cataract and Refractive Surgery·Gabor B SchariothMitrofanis Pavlidis
Dec 9, 2009·Journal of Cataract and Refractive Surgery·Iñaki Rodríguez-AgirretxeMarta Ubeda-Erviti
Aug 18, 2009·Journal of Cataract and Refractive Surgery·Oren N Fass, Wesley K Herman
Jan 20, 2011·Journal of Refractive Surgery·Mitrofanis PavlidisGabor B Scharioth
Aug 30, 2008·Journal of Cataract and Refractive Surgery·Amar AgarwalSridhar Srinivasan
Oct 30, 2007·Journal of Cataract and Refractive Surgery·Scharioth G B Gabor, Mitrofanis M Pavlidis
Nov 4, 2006·Journal of Cataract and Refractive Surgery·Richard S HoffmanMark Packer
Oct 13, 2015·Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie·Jee Myung YangYong-Sok Ji
Jul 26, 2006·Journal of Cataract and Refractive Surgery·Richard S HoffmanIsrael Rozenberg
Sep 6, 2005·Survey of Ophthalmology·Y M Por, M J Lavin
May 15, 2013·Journal of Cataract and Refractive Surgery·Dhivya Ashok KumarAthiya Agarwal
Jul 1, 2011·Saudi Journal of Ophthalmology : Official Journal of the Saudi Ophthalmological Society·Dhivya A KumarSoosan Jacob
Dec 7, 2017·Indian Journal of Ophthalmology·Nagendra Shekhawat, Karishma Goyal
Jun 4, 2016·International Ophthalmology Clinics·Eric J KimZaina N Al-Mohtaseb
Oct 1, 2019·Journal of Cataract and Refractive Surgery·Takehiro MatsumuraMasaru Inatani
Nov 7, 2017·Journal of Vitreoretinal Diseases·Maxwell S StemJeremy D Wolfe
Nov 7, 2008·European Journal of Ophthalmology·G Migliorati, P Brusini
Feb 11, 1998·Journal of Cataract and Refractive Surgery·R R Berger, A M Kenyeres

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