Methods to measure the position of the corneal apex are reviewed and evaluated. The recommended method is with a small-mire keratometer that has a target mounted independently of the drum. The corneal apexes for eight subjects were found to be decentered from their lines of sight but a directional trend was not apparent. We did not find a significant reduction in corneal toricity at the apex as compared to the line of sight, as was reported by Ludlam7.
No takes yet. Share an insight, caveat, or question.
Fatt et al. (1969) studied this question.