July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Intraocular pressure and ocular shape changes during altitude acclimatization from Beijing to Lhasa
Author Affiliations & Notes
  • Yuan Wu
    Ophthalmology, Peking University First Hospital, Beijing, China
  • Qiongda Ciren
    Ophthalmology, Tibet Autonomous Region People’s Hospital , Lhasa, China
  • Xiaoming Yan
    Ophthalmology, Peking University First Hospital, Beijing, China
  • Yingfeng Shao
    State Key Laboratory of Nonlinear Mechanics, Chinese Academy of Sciences, Beijing, China
  • Footnotes
    Commercial Relationships   Yuan Wu, None; Qiongda Ciren, None; Xiaoming Yan, None; Yingfeng Shao, None
  • Footnotes
    Support  Opening fund of State Key Laboratory of Nonlinear Mechanics, Chinese Academy of Sciences
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 1663. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Yuan Wu, Qiongda Ciren, Xiaoming Yan, Yingfeng Shao; Intraocular pressure and ocular shape changes during altitude acclimatization from Beijing to Lhasa. Invest. Ophthalmol. Vis. Sci. 2018;59(9):1663.

      Download citation file:


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

      ×
  • Supplements
Abstract

Purpose : To investigate changes of intraocular pressure (IOP) and ocular shape on ascent to high altitude from Beijing to Lhasa

Methods : 20 volunteers (17 men, 3 women) who were sent to work from Beijing to Lhasa, Tibet were enrolled. IOP, axial length (AL) and corneal curvature (K) were measured for twice at Beijing (altitude 43m) and Lhasa (altitude 3658m) respectively. They had the first examination at least 1 day before arriving Lhasa and had the second examination when stayed at Lhasa for 7 days or later. IOP was measured with applanation tonometer and the two tonometers have a consistency correction at Beijing before the study. AL was measured with two different type ultrasonic pachymeters and K was measured using two same type autofractometers. The data of highland and lowland were analyzed by paired-sample T test.

Results : The mean values for IOP of Beijing was 12.75±2.41 mmHg and Lhasa was 15.08±3.35 mmHg. The mean AL was 24.83±1.54 mm at Beijing and was 25.24±1.38 mm at Lhasa. The IOP and AL increased significantly at the altitude of Lhasa (P<0.05). The mean K was 43.54±2.17 D at Beijing and 43.52±2.21 D at Lhasa. Difference of K were not significant (P>0.05).

Conclusions : High altitude leads a small but significant changes in IOP and axial length. But the shape of cornea surface was not influenced by the hypobaric and hypoxia circumstance.

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

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×