Application of a modified keratometer in the study of corneal topography on Chinese subjects

Kwok Cheung Andrew Lam, William A. Douthwaite

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)


A corneal topography study was carried out on Hong Kong Chinese subjects using a modified keratometer. The Chinese corneal topography measured by this modified keratometer was similar to other studies using the Wesley-Jessen Photo Electronic Keratoscopy (PEK) System 2000. The mean p-values along the horizontal meridian and the vertical meridian were 0.82 and 0.87, respectively. A negative correlation was found between the p-value and the central corneal radius along the horizontal meridian which may indicate that a steeper central cornea will have a greater p-value. However, the correlation coefficient of 0.56 was not too certain for this conclusion to be drawn. A difference of 0.04 was found between the horizontal p-value and the vertical p-value, which may be a result of the tight lid tension along the vertical meridian. This modified keratometer can be considered as an inexpensive instrument for the study of corneal topography.
Original languageEnglish
Pages (from-to)130-134
Number of pages5
JournalOphthalmic and Physiological Optics
Issue number2
Publication statusPublished - 1 Jan 1996

ASJC Scopus subject areas

  • Ophthalmology
  • Optometry
  • Sensory Systems


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