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J Ophthalmol. 2018 Sep 16;2018:8072140. doi: 10.1155/2018/8072140. eCollection 2018.

The Effect of Strabismus Muscle Surgery on Corneal Biomechanics.

Journal of ophthalmology

Heba A El Gendy, Noha M Khalil, Iman M Eissa, Shireen Ma Shousha

Affiliations

  1. Professor of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, Egypt.
  2. Associate Professor of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, Egypt.
  3. Lecturer of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, Egypt.

PMID: 30305960 PMCID: PMC6165609 DOI: 10.1155/2018/8072140

Abstract

PURPOSE: Studying the early effect of different extraocular muscle (EOM) surgeries on corneal biomechanics.

SUBJECTS AND METHODS: This is a prospective, nonrandomized, interventional study, in which 42 eyes of 29 candidates for EOM surgery for strabismus correction at Cairo university hospitals, aged 14-37 years, were recruited. All participants had measuring of the visual acuity, refraction (spherical equivalent (SE)), assessment of the EOM motility and muscle balance, sensory evaluation, fundus examination, and assessing the ocular biomechanics using the Ocular response analyzer (ORA, Reichert, INC., Depew, NY) noting the corneal hysteresis (CH) and corneal resistance factor (CRF) preoperatively. Same patients were reassessed using ORA 4 weeks postoperatively following a different standard EOM surgery (recti weakening/strengthening and inferior oblique weakening either (graded recession) according to the surgical indication, and ∆CH and ∆CRF were calculated, each is the preoperative - the postoperative value.

RESULTS: ∆CH and ∆CRF = -0.78 ± 1.56 and -0.72 ± 2.15, respectively, and a highly significant difference was found between each of the pre- and postoperative CH and CRF (

CONCLUSION: A different EOM surgery has an early tendency for increase of the postoperative CH specially for muscle weakening procedures (recti recession/inferior oblique muscle weakening).

References

  1. Arch Soc Esp Oftalmol. 2013 Apr;88(4):134-8 - PubMed
  2. J Pediatr Ophthalmol Strabismus. 1997 Jul-Aug;34(4):244-6 - PubMed
  3. Eye (Lond). 2011 Aug;25(8):1083-9 - PubMed
  4. Eye (Lond). 2006 Apr;20(4):440-6 - PubMed
  5. Int J Ophthalmol. 2016 Feb 18;9(2):230-4 - PubMed
  6. J Curr Ophthalmol. 2016 Aug 18;28(3):97-8 - PubMed
  7. J Pediatr Ophthalmol Strabismus. 2014 May-Jun;51(3):171-6 - PubMed
  8. J Cataract Refract Surg. 2008 Apr;34(4):616-22 - PubMed
  9. Kaohsiung J Med Sci. 2014 Jun;30(6):299-304 - PubMed
  10. Clin Ophthalmol. 2012;6:565-9 - PubMed
  11. J AAPOS. 1999 Apr;3(2):80-6 - PubMed
  12. Semin Ophthalmol. 2018;33(4):449-453 - PubMed
  13. Cornea. 2017 Mar;36(3):310-316 - PubMed
  14. JAMA. 2013 Nov 27;310(20):2191-4 - PubMed
  15. Curr Eye Res. 2015 Jan;40(1):1-18 - PubMed
  16. Am J Ophthalmol. 2005 Nov;140(5):939-41 - PubMed
  17. Curr Opin Ophthalmol. 2016 Sep;27(5):393-7 - PubMed
  18. BMC Ophthalmol. 2014 Jan 30;14:11 - PubMed
  19. Curr Eye Res. 2012 Aug;37(8):689-93 - PubMed
  20. Curr Eye Res. 2016 Jul;41(7):913-6 - PubMed
  21. Curr Eye Res. 2012 Jul;37(7):553-62 - PubMed

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