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Corneal Thickness in Highlanders.

Sagarika Patyal1, Amit Arora2, Arun Yadav3

  • 11 Army Hospital Research and Referral , New Delhi, India .

High Altitude Medicine & Biology
|December 21, 2016
PubMed
Summary
This summary is machine-generated.

Highlanders living at high altitudes have thinner corneas than lowlanders. This difference in central corneal thickness (CCT) may impact eye care for high-altitude residents.

Keywords:
central corneal thicknesshigh altitudehighlanderultrasonic pachymetry

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Area of Science:

  • Ophthalmology
  • Altitude Medicine
  • Human Physiology

Background:

  • Corneal thickness is crucial for eye health and diagnosis.
  • Previous research indicated increased corneal thickness at high altitudes, but highlander data was lacking.
  • This study addresses the corneal thickness of individuals residing at high altitudes.

Purpose of the Study:

  • To determine the central corneal thickness (CCT) of highlanders living above 11,000 feet.
  • To compare the CCT of highlanders with that of lowlanders living at 1,500 feet.

Main Methods:

  • 254 highlanders (Ladakh region, India) and 212 lowlanders participated.
  • Central corneal thickness (CCT) was measured using an ultrasonic pachymeter.
  • An average of 25 measurements per eye were taken for each participant.

Main Results:

  • Highlanders exhibited a mean CCT 11.95 μm lower than lowlanders, after adjusting for age and sex (p < 0.001).
  • Age significantly affected CCT, with a decrease of 0.31 μm per year of age.
  • No significant difference in CCT was observed between the right and left eyes; gender had no significant effect.

Conclusions:

  • A statistically significant difference in CCT exists between highlanders and lowlanders.
  • Thinner corneas in highlanders may influence glaucoma diagnosis, refractive surgery outcomes, and contact lens fitting.
  • Further research into the implications of corneal thickness in high-altitude populations is warranted.