Corneal Apex Location In Relation To Refractive Error.

17 subjects (34 eyes) were participants in the study of location of corneal apex in low to moderate hyperopic and low to moderate myopic eyes. There were 9 myopic patients with refractive errors ranging from -.50 to -6.00 ds with <2.00D of astigmatism. There were 8 hyperopic eyes with refractive errors ranging from +.50 to +2.00ds with <2.00D of stigmatism. The EyeSys Corneal Analysis System was the corneal topographer used
as the means of measuring and analyzing data. Results showed hyperopic eyes to have corneal apex average location to be .188mm inferior and .088mm nasally. For myopic eyes the average corneal apex location was found to be .317mm inferior and .067mm nasally. The composite average location in all .34 eyes showed corneal apex location to be .252mm inferior and .078mm nasally.