Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration

Mona Bhargava; Rama Rajagopal; Radhika Natarajan; Rachapalle Reddi Sudhir; Saket Shashikant Benurwar; Raj Shekhar Paul

doi:doi:10.11648/j.ijovs.20220702.13

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Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration

Mona Bhargava, Rama Rajagopal, Radhika Natarajan, Rachapalle Reddi Sudhir, Saket Shashikant Benurwar, Raj Shekhar Paul

Published in International Journal of Ophthalmology & Visual Science (Volume 7, Issue 2)

Received: 6 April 2022 Accepted: 2 May 2022 Published: 12 May 2022

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Abstract

A retrospective interventional study involving 15 eyes of 10 patients with pellucid marginal degeneration (PMD) were treated with collagen cross linking (CXL) to evaluate itslong term effects on such patients. The eyes were divided as per riboflavin used namely hypo-osmolar, HPMC (hydroxy propyl methyl cellulose), iso-osmolar into group A, B and C respectively. Visual acuity, retinoscopic refraction, corneal topography, tomography and pachymetry were examined before and every six months after surgery for the first two years and then annually. logMAR UCVA (uncorrected visual acuity) and BCVA (best corrected visual acuity) with spectacles at 6 months and at final follow-up showed improvement in all groups, which were significant in group C. There was no significant difference in the pre and post-op spherical equivalent (P = 0.38) and the mean cylinder decreased by 0.53 ± 0.81 D (P = 0.19) which was not significant. Keratometric astigmatism decreased by 1.13 D (P = 0.2) measured by Scheimpflug imaging and by 1.4 D (P = 0.13) as measured by topography. Maximum keratometry (Kmax) showed a reduction from 50.62 ± 5.2 to 50.23 ± 4.9 (P = 0.07) at 6 months and 48.95 ± 4.7 (P = 0.09) at final follow-up. None of the treated eyes developed side effect of notable severity. Collagen cross linking is a safe and effective method to prevent progression in PMD. Stability of astigmatism, keratometric parameters and improvement in BCVA in our study indicates the efficacy of CXL to prevent progression in PMD.

Published in	International Journal of Ophthalmology & Visual Science (Volume 7, Issue 2)
DOI	10.11648/j.ijovs.20220702.13
Page(s)	57-64
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Pellucid Marginal Degeneration, Collagen Cross Linking, Pentacam

References

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APA Style

Mona Bhargava, Rama Rajagopal, Radhika Natarajan, Rachapalle Reddi Sudhir, Saket Shashikant Benurwar, et al. (2022). Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration. International Journal of Ophthalmology & Visual Science, 7(2), 57-64. https://doi.org/10.11648/j.ijovs.20220702.13

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ACS Style

Mona Bhargava; Rama Rajagopal; Radhika Natarajan; Rachapalle Reddi Sudhir; Saket Shashikant Benurwar, et al. Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration. Int. J. Ophthalmol. Vis. Sci. 2022, 7(2), 57-64. doi: 10.11648/j.ijovs.20220702.13

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AMA Style

Mona Bhargava, Rama Rajagopal, Radhika Natarajan, Rachapalle Reddi Sudhir, Saket Shashikant Benurwar, et al. Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration. Int J Ophthalmol Vis Sci. 2022;7(2):57-64. doi: 10.11648/j.ijovs.20220702.13

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@article{10.11648/j.ijovs.20220702.13,
  author = {Mona Bhargava and Rama Rajagopal and Radhika Natarajan and Rachapalle Reddi Sudhir and Saket Shashikant Benurwar and Raj Shekhar Paul},
  title = {Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration},
  journal = {International Journal of Ophthalmology & Visual Science},
  volume = {7},
  number = {2},
  pages = {57-64},
  doi = {10.11648/j.ijovs.20220702.13},
  url = {https://doi.org/10.11648/j.ijovs.20220702.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijovs.20220702.13},
  abstract = {A retrospective interventional study involving 15 eyes of 10 patients with pellucid marginal degeneration (PMD) were treated with collagen cross linking (CXL) to evaluate itslong term effects on such patients. The eyes were divided as per riboflavin used namely hypo-osmolar, HPMC (hydroxy propyl methyl cellulose), iso-osmolar into group A, B and C respectively. Visual acuity, retinoscopic refraction, corneal topography, tomography and pachymetry were examined before and every six months after surgery for the first two years and then annually. logMAR UCVA (uncorrected visual acuity) and BCVA (best corrected visual acuity) with spectacles at 6 months and at final follow-up showed improvement in all groups, which were significant in group C. There was no significant difference in the pre and post-op spherical equivalent (P = 0.38) and the mean cylinder decreased by 0.53 ± 0.81 D (P = 0.19) which was not significant. Keratometric astigmatism decreased by 1.13 D (P = 0.2) measured by Scheimpflug imaging and by 1.4 D (P = 0.13) as measured by topography. Maximum keratometry (Kmax) showed a reduction from 50.62 ± 5.2 to 50.23 ± 4.9 (P = 0.07) at 6 months and 48.95 ± 4.7 (P = 0.09) at final follow-up. None of the treated eyes developed side effect of notable severity. Collagen cross linking is a safe and effective method to prevent progression in PMD. Stability of astigmatism, keratometric parameters and improvement in BCVA in our study indicates the efficacy of CXL to prevent progression in PMD.},
 year = {2022}
}

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TY  - JOUR
T1  - Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration
AU  - Mona Bhargava
AU  - Rama Rajagopal
AU  - Radhika Natarajan
AU  - Rachapalle Reddi Sudhir
AU  - Saket Shashikant Benurwar
AU  - Raj Shekhar Paul
Y1  - 2022/05/12
PY  - 2022
N1  - https://doi.org/10.11648/j.ijovs.20220702.13
DO  - 10.11648/j.ijovs.20220702.13
T2  - International Journal of Ophthalmology & Visual Science
JF  - International Journal of Ophthalmology & Visual Science
JO  - International Journal of Ophthalmology & Visual Science
SP  - 57
EP  - 64
PB  - Science Publishing Group
SN  - 2637-3858
UR  - https://doi.org/10.11648/j.ijovs.20220702.13
AB  - A retrospective interventional study involving 15 eyes of 10 patients with pellucid marginal degeneration (PMD) were treated with collagen cross linking (CXL) to evaluate itslong term effects on such patients. The eyes were divided as per riboflavin used namely hypo-osmolar, HPMC (hydroxy propyl methyl cellulose), iso-osmolar into group A, B and C respectively. Visual acuity, retinoscopic refraction, corneal topography, tomography and pachymetry were examined before and every six months after surgery for the first two years and then annually. logMAR UCVA (uncorrected visual acuity) and BCVA (best corrected visual acuity) with spectacles at 6 months and at final follow-up showed improvement in all groups, which were significant in group C. There was no significant difference in the pre and post-op spherical equivalent (P = 0.38) and the mean cylinder decreased by 0.53 ± 0.81 D (P = 0.19) which was not significant. Keratometric astigmatism decreased by 1.13 D (P = 0.2) measured by Scheimpflug imaging and by 1.4 D (P = 0.13) as measured by topography. Maximum keratometry (Kmax) showed a reduction from 50.62 ± 5.2 to 50.23 ± 4.9 (P = 0.07) at 6 months and 48.95 ± 4.7 (P = 0.09) at final follow-up. None of the treated eyes developed side effect of notable severity. Collagen cross linking is a safe and effective method to prevent progression in PMD. Stability of astigmatism, keratometric parameters and improvement in BCVA in our study indicates the efficacy of CXL to prevent progression in PMD.
VL  - 7
IS  - 2
ER  -

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Author Information

Mona Bhargava

Department of Cornea and Refractive Surgery, Aditya Birla Sankara Nethralaya, Kolkata, India
Rama Rajagopal

Department of Cornea and Refractive Surgery, Sankara Nethralaya, Chennai, India
Radhika Natarajan

Department of Cornea and Refractive Surgery, Sankara Nethralaya, Chennai, India
Rachapalle Reddi Sudhir

Department of Cornea and Refractive Surgery, Sankara Nethralaya, Chennai, India
Saket Shashikant Benurwar

Department of Cornea and Refractive Surgery, Aditya Birla Sankara Nethralaya, Kolkata, India
Raj Shekhar Paul

Department of Cornea and Refractive Surgery, Aditya Birla Sankara Nethralaya, Kolkata, India

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APA Style

Mona Bhargava, Rama Rajagopal, Radhika Natarajan, Rachapalle Reddi Sudhir, Saket Shashikant Benurwar, et al. (2022). Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration. International Journal of Ophthalmology & Visual Science, 7(2), 57-64. https://doi.org/10.11648/j.ijovs.20220702.13

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ACS Style

Mona Bhargava; Rama Rajagopal; Radhika Natarajan; Rachapalle Reddi Sudhir; Saket Shashikant Benurwar, et al. Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration. Int. J. Ophthalmol. Vis. Sci. 2022, 7(2), 57-64. doi: 10.11648/j.ijovs.20220702.13

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AMA Style

Mona Bhargava, Rama Rajagopal, Radhika Natarajan, Rachapalle Reddi Sudhir, Saket Shashikant Benurwar, et al. Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration. Int J Ophthalmol Vis Sci. 2022;7(2):57-64. doi: 10.11648/j.ijovs.20220702.13

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@article{10.11648/j.ijovs.20220702.13,
  author = {Mona Bhargava and Rama Rajagopal and Radhika Natarajan and Rachapalle Reddi Sudhir and Saket Shashikant Benurwar and Raj Shekhar Paul},
  title = {Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration},
  journal = {International Journal of Ophthalmology & Visual Science},
  volume = {7},
  number = {2},
  pages = {57-64},
  doi = {10.11648/j.ijovs.20220702.13},
  url = {https://doi.org/10.11648/j.ijovs.20220702.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijovs.20220702.13},
  abstract = {A retrospective interventional study involving 15 eyes of 10 patients with pellucid marginal degeneration (PMD) were treated with collagen cross linking (CXL) to evaluate itslong term effects on such patients. The eyes were divided as per riboflavin used namely hypo-osmolar, HPMC (hydroxy propyl methyl cellulose), iso-osmolar into group A, B and C respectively. Visual acuity, retinoscopic refraction, corneal topography, tomography and pachymetry were examined before and every six months after surgery for the first two years and then annually. logMAR UCVA (uncorrected visual acuity) and BCVA (best corrected visual acuity) with spectacles at 6 months and at final follow-up showed improvement in all groups, which were significant in group C. There was no significant difference in the pre and post-op spherical equivalent (P = 0.38) and the mean cylinder decreased by 0.53 ± 0.81 D (P = 0.19) which was not significant. Keratometric astigmatism decreased by 1.13 D (P = 0.2) measured by Scheimpflug imaging and by 1.4 D (P = 0.13) as measured by topography. Maximum keratometry (Kmax) showed a reduction from 50.62 ± 5.2 to 50.23 ± 4.9 (P = 0.07) at 6 months and 48.95 ± 4.7 (P = 0.09) at final follow-up. None of the treated eyes developed side effect of notable severity. Collagen cross linking is a safe and effective method to prevent progression in PMD. Stability of astigmatism, keratometric parameters and improvement in BCVA in our study indicates the efficacy of CXL to prevent progression in PMD.},
 year = {2022}
}

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TY  - JOUR
T1  - Long Term Results of Collagen Cross Linking in Pellucid Marginal Degeneration
AU  - Mona Bhargava
AU  - Rama Rajagopal
AU  - Radhika Natarajan
AU  - Rachapalle Reddi Sudhir
AU  - Saket Shashikant Benurwar
AU  - Raj Shekhar Paul
Y1  - 2022/05/12
PY  - 2022
N1  - https://doi.org/10.11648/j.ijovs.20220702.13
DO  - 10.11648/j.ijovs.20220702.13
T2  - International Journal of Ophthalmology & Visual Science
JF  - International Journal of Ophthalmology & Visual Science
JO  - International Journal of Ophthalmology & Visual Science
SP  - 57
EP  - 64
PB  - Science Publishing Group
SN  - 2637-3858
UR  - https://doi.org/10.11648/j.ijovs.20220702.13
AB  - A retrospective interventional study involving 15 eyes of 10 patients with pellucid marginal degeneration (PMD) were treated with collagen cross linking (CXL) to evaluate itslong term effects on such patients. The eyes were divided as per riboflavin used namely hypo-osmolar, HPMC (hydroxy propyl methyl cellulose), iso-osmolar into group A, B and C respectively. Visual acuity, retinoscopic refraction, corneal topography, tomography and pachymetry were examined before and every six months after surgery for the first two years and then annually. logMAR UCVA (uncorrected visual acuity) and BCVA (best corrected visual acuity) with spectacles at 6 months and at final follow-up showed improvement in all groups, which were significant in group C. There was no significant difference in the pre and post-op spherical equivalent (P = 0.38) and the mean cylinder decreased by 0.53 ± 0.81 D (P = 0.19) which was not significant. Keratometric astigmatism decreased by 1.13 D (P = 0.2) measured by Scheimpflug imaging and by 1.4 D (P = 0.13) as measured by topography. Maximum keratometry (Kmax) showed a reduction from 50.62 ± 5.2 to 50.23 ± 4.9 (P = 0.07) at 6 months and 48.95 ± 4.7 (P = 0.09) at final follow-up. None of the treated eyes developed side effect of notable severity. Collagen cross linking is a safe and effective method to prevent progression in PMD. Stability of astigmatism, keratometric parameters and improvement in BCVA in our study indicates the efficacy of CXL to prevent progression in PMD.
VL  - 7
IS  - 2
ER  -

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