Revista Mexicana de Oftalmología

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VOLUME 95 , ISSUE 6E ( November-December, 2021 ) > List of Articles

Original Article

Immediate corneal behavior after phacoemulsification, by means of spectral-domain optical coherence tomography

Keywords : Phacoemulsification, SD-OCT, Thickness, Density, Reflectivity, EPT

Citation Information : Immediate corneal behavior after phacoemulsification, by means of spectral-domain optical coherence tomography. 2021; 95 (6E):251-258.

DOI: 10.24875/RMOE.M21000193

License: CC BY-NC-ND 4.0

Published Online: 05-11-2021

Copyright Statement:  Copyright © 2021 Sociedad Mexicana de Oftalmología. Published by Permanyer


Abstract

Objective: To describe the corneal changes in the first 24 hours after phacoemulsification, by means of spectral-domain optical coherence tomography (SD-OCT). Method: Prospective, observational, descriptive, cross-sectional and comparative study. Images taken by SD-OCT in eyes without a history of intraocular and corneal surgery were used to determine an average of thickness, density, reflectivity and normal characteristics of each corneal layer, in three age groups of 50-59 years, 60-69 years and 70-79 years. The characteristics of each cornea were described in relation to the effective phacoemulsification time (EPT). Results: We analyzed 180 eyes, finding a p<0.0001 for the total thickness in the 3 groups when comparing the corneas of the operated and non-operated eyes, where an increase of 13% was obtained between groups 1 and 2, and an increase of 1% between groups 2 and 3.The density compared by groups showed p = 0.0028, p = 0.0011 and p < 0.0001, with a decrease of -2.01% in group 1, -4.13% in group 2 and -5.07% in group 3. From an EPT > 8 seconds, a decrease in the reflectivity of the stroma, Descemet's membrane and endothelium was found. Conclusions: The increase in corneal thickness is inversely proportional to corneal density; corneal reflectivity shows significant changes as EPT increases and phacoemulsification surgery produces multiple corneal changes observable by SD-OCT, despite the fact that they are sometimes not perceived by slit-lamp examination.


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  1. Testoni PA. Optical coherence tomography. Scientific World J. 2007;7: 87-108.
  2. Sakata LM, Wong TTL, Wong H-T, Kumar RS, Htoon HM, Aung HT, et al. Comparison of Visante and slit-lamp anterior segment optical coherence tomography in imaging the anterior chamber angle. Eye. 2010;224:578-87.
  3. Xia Y, Liu X, Luo L, Zeng Y, Cai X, Zeng M, et al. Early changes in clear cornea incision after phacoemulsification: an anterior segment optical coherence tomography study. Acta Ophthalmol (Oxf). 2010;87:764-8.
  4. Calladine D, Packard R. Clear corneal incision architecture in the immediate postoperative period evaluated using optical coherence tomography. J Cataract Refract Surg. 2007;33:1429-35.
  5. Choi CY, Youm DJ, Kim MJ, Tchah H. Changes in central corneal thickness of preserved corneas over time measured using anterior segment optical coherence tomography. Cornea. 2009;28:536-40.
  6. Yi DH, Dana MR. Corneal edema after cataract surgery: Incidence and etiology. Semin Ophthalmol. 2002;17:110-4.
  7. Benai CA, Tsao JZ, Afshari NA. Descemet membrane detachment during cataract surgery: etiology and management. Curr Opin Ophthalmol. 2017;28:35-41.
  8. Ozcelik ND, Eltutar K, Bilgin B. Toxic anterior segment syndrome after uncomplicated cataract surgery. Eur J Ophthalmol. 2010;20:106-14.
  9. Sharma N, Gupta S, Maharana P, Shanmugam P, Nagpal R, Vajpayee RB, et al. Anterior segment optical coherence tomography-guided management algorithm for Descemet membrane detachment after intraocular surgery. Cornea. 2015;34:1170-4.
  10. Jacob S, Agarwal A, Chaudhry P, Narasimhan S, Chaudhry VN. A new clinico-tomographic classification and management algorithm for Descemet's membrane detachment. Cont Lens Anterior Eye. 2015;38:327-33.
  11. Rubowitz A, Assia EI, Rosner M, Topaz M. Antioxidant protection against corneal damage by free radicals during phacoemulsification. Invest Ophthalmol Vis Sci. 2003;44:1866-70.
  12. Narayanan R, Gaster RN, Kenney MC. Pseudophakic corneal edema: a review of mechanisms and treatments. Cornea. 2006;25:993-1004.
  13. Bodh SA, Kumar V, Raina UK, Ghosh B, Thakar M. Inflammatory glaucoma. Oman J Ophthalmol. 2011;4:3-9.
  14. Wang T. Analysis and treatment of detachment of corneal posterior elastic layer during cataract phacoemulsification. Int J Ophthalmol. 2014;8:1511-2.
  15. Guo P, Pan Y, Zhang Y, Tighe S, Zhu Y, Li M, et al. Study on the classification of Descemet membrane detachment after cataract surgery with AS-OCT. Int J Med Sci. 2018;15:1092-7.
  16. Li H, Leung CKS, Wong L, Cheung CYL, Pang CP, Weinreb RN, et al. Comparative study of central corneal thickness measurement with slitlamp optical coherence tomography and Visante optical coherence tomography. Ophthalmology. 2008;115:796-801.
  17. Baikoff G, Lutun E, Ferraz C, Wei J. Static and dynamic analysis of the anterior segment with optical coherence tomography. J Cataract Refract Surg. 2004;30:1843-50.
  18. Dada T, Sihota R, Gadia R, Aggarwal A, Mandal S, Gupta V. Comparison of anterior segment optical coherence tomography and ultrasound biomicroscopy for assessment of the anterior segment. J Cataract Refract Surg. 2007;33:837-40.
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