May 1979
Volume 18, Issue 5
Articles  |   May 1979
A comparison of three methods for the measurement of corneal thickness.
Investigative Ophthalmology & Visual Science May 1979, Vol.18, 535-538. doi:
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      S P Azen, K A Burg, R E Smith, E Maguen; A comparison of three methods for the measurement of corneal thickness.. Invest. Ophthalmol. Vis. Sci. 1979;18(5):535-538.

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

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Four subjects who had never worn contact lenses underwent measurement of their corneal thickness by each of three measurement methods: Haag-Streit pachometer with/and without Mishima-Hedby attachment and the Syber specular microscope. Data were collected on three separate sessions, and at each session triplicate measurement trials were made for each method. The resulting 108 measurements were analyzed statistically. Significant differences were found among the measurement methods. Two of the methods were found to be consistent from session to session. In addition, the specular microscope was found to be the most precise method within a session. It was concluded that the specular microscope, which highly trained technicians can utilize to make the measurements, offers a valuable alternative to the measurement of corneal thickness in long-term prospective studies.


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