International Journal of General Medicine (Apr 2021)

Strehl Ratio and Myopia in Chinese Adolescents: The Tuyou County Pediatric Eye (TYPE) Study

  • Bian X,
  • Guo Y,
  • Guo S,
  • Zhang S,
  • Zhang G,
  • Liu L,
  • Yang Y,
  • Liu J

Journal volume & issue
Vol. Volume 14
pp. 1541 – 1546

Abstract

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Xiaoyan Bian,1,* Yuxia Guo,2,* Shixuan Guo,3,* Song Zhang,4,* Guisen Zhang,3 Lei Liu,4 Yajun Yang,5 Jun Liu6 1Department of Ocular Surface, Baotou Chaoju Eye Hospital, Baotou, 014060, People’s Republic of China; 2Department of Cataract Surgery, Ninghai Eye Hospital, Ningbo, 315615, People’s Republic of China; 3Department of Retina, Hohhot Chaoju Eye Hospital, Hohhot, 010050, People’s Republic of China; 4Department of Ophthalmology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, People’s Republic of China; 5Department of Cataract, Baotou Chaoju Eye Hospital, Baotou, 014060, People’s Republic of China; 6Department of Ophthalmology, Changzhi People’s Hospital, Changzhi, 046000, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yajun YangDepartment of Cataract, Baotou Chaoju Eye Hospital, Baotou, 014060, People’s Republic of ChinaEmail [email protected] LiuDepartment of Ophthalmology, Changzhi People’s Hospital, Changzhi, 046000, People’s Republic of ChinaEmail [email protected]: To investigate the relationships between property of the visual quality, Strehl ratio (SR) and the degree of myopia.Methods: A total of 444 anatomically normal eyes of 222 adolescents were enrolled in the TYPE study. Based on spherical equivalent (SE), subjects were divided into four groups: emmetropia/control (SE: +0.75 to − 0.75 D), low myopia (SE: − 0.75 to − 3.00D), moderate myopia (SE: − 3.00 to − 5.00D), high myopia (SE: <− 5.00D). Axial length (AL) was measured. SR was attained with an OPD-III SCAN and calculated under a 3 mm pupil diameter.Results: The overall SR (mean ± SD) was 0.40 ± 0.08. Among all included eyes, the SR in eyes with the emmetropia, low myopia, moderate myopia and high myopia was 0.80 ± 0.11, 0.31 ± 0.04, 0.21 ± 0.11, and 0.11 ± 0.02, respectively. Furthermore, the K2 in eyes with the emmetropia, low myopia, moderate myopia and high myopia was 43.83± 1.50, 43.96± 1.37, 43.4± 5.52, and 45.16± 1.43, respectively. Significant differences were detected within the four groups in terms of SR and K2 (P < 0.001). Multiple regression analysis confirmed that AL negatively affected SR independently (P < 0.001).Conclusion: Our findings provide a useful basis for the conclusion that myopia affects visual quality SR in Chinese adolescents. Besides, when performing visual quality SR, axial length must be taken into consideration, as it will influence SR.Keywords: myopia, visual quality, SR, axial length

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