July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Corneal Higher-Order Aberrations of the Anterior, Posterior and Total Cornea After Pterygium Surgery
Author Affiliations & Notes
  • AYAKO TSUCHIYA
    Ophthalmology, Yokohama Minami Kyosai Hospital, Yokohama, Kanagawa, Japan
  • Takahiko Hayashi
    Ophthalmology, Yokohama Minami Kyosai Hospital, Yokohama, Kanagawa, Japan
    Ophthalmology, Yokohama City University Hospital, Yokohama, Kanagawa, Japan
  • Toshiki Shimizu
    Ophthalmology, Yokohama Minami Kyosai Hospital, Yokohama, Kanagawa, Japan
    Ophthalmology, Yokohama City University Hospital, Yokohama, Kanagawa, Japan
  • Naoko Kato
    Ophthalmology, Saitama Medical University Hospital, Kawagoe, Saitama, Japan
  • Footnotes
    Commercial Relationships   AYAKO TSUCHIYA, None; Takahiko Hayashi, None; Toshiki Shimizu, None; Naoko Kato, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 5763. doi:
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      AYAKO TSUCHIYA, Takahiko Hayashi, Toshiki Shimizu, Naoko Kato; Corneal Higher-Order Aberrations of the Anterior, Posterior and Total Cornea After Pterygium Surgery. Invest. Ophthalmol. Vis. Sci. 2018;59(9):5763.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To investigate the influence of pterygium on the corneal higher-order aberrations (HOAs) of the anterior, posterior and total cornea.

Methods : Twelve eyes of 10 patients with primary pterygium that underwent surgical excision were enrolled. Corneal HOAs (higher order aberration [root mean square of 3rd- to 6th-order Zernike coefficients], coma aberration, and spherical aberration measured using anterior segment optical coherence tomography [AS-OCT; CASIA®, Tomey, Japan]) within 6.0 mm of diameter of the anterior, posterior, and total cornea were evaluated before as well as 1 and 3 months after the pterygium excision procedure.

Results : The HOAs of the posterior cornea was 0.55 ± 1.15 preoperatively, and it improved to 0.19 ± 0.06 and 0.19 ± 0.06 at 1 and 3 months postoperatively, respectively (p = 0.007 and 0.04, respectively). Coma aberration of the posterior cornea was 0.44 ± 0.93 preoperatively, and it improved to 0.15 ± 0.05 and 0.14 ± 0.05 at 1 and 3 months postoperatively, respectively (p = 0.006 and 0.02, respectively). Spherical aberration was 0.32 ± 0.68 preoperatively, and it did not significantly change at 1 (0.12 ± 0.04; p = 0.09) and 3 months postoperatively (0.17 ± 0.07; p = 0.24). All the higher order, coma, and spherical aberrations were not significantly different between 1 and 3 months postoperatively.

Conclusions : Although pterygium is a pathological lesion of the corneal epithelium and the superficial stroma, it affects the HOAs of not only the anterior cornea but also the posterior cornea. In all eyes, the increased HOAs of the anterior, posterior, and total cornea decreased at just 1 month after surgical excision of the pterygium.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

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