Purchase this article with an account.
Akio Miyakoshi, Tomoko Nakamura, Naoki Tojo, Atsushi Hayashi; Abnormal fluctuations of the accommodation in Patients with mild Keratoconus. Invest. Ophthalmol. Vis. Sci. 2014;55(13):3774.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To examine fluctuations of the accommodation in patients with mild keratoconus and the relationship to refractive parameters.
Using a Speedy-I (RIGHT GROUP, Japan), we examined fluctuations of kinetic refraction map (Fk-map) in 13 eyes with mild keratconus (40.0±12.3 years) and 20 age-matched normal eyes (38.1±14.1 years). We defined abnormal maps if the Fk-map showed 1) more than 20% of Fk-map is red or 2) more than 50% of Fk-map is red or yellow. And we scored the Fk-maps and examined correlations to uncorrected visual acuity, best-corrected visual acuity, spherical power, and astigmatic power (corneal astigmatism and subjective astigmatism). Statistical analysis was performed with independent t test, Fisher test, and Spearman’s nonparametric correlation analysis.
All eyes of the keratoconus group and 50% of the eyes of the normal group (10 eyes of 20 eyes) showed abnormal Fk-maps (P=0.002). The Fk-map score of the keratoconus group did not show any significant correlations to uncorrected visual acuity (P=0.17), best-corrected visual acuity (P=0.68), spherical power (P=0.75), corneal astigmatism (P=0.52), or subjective astigmatism (P=0.36).
The abnormal Fk-map score was independent of any refractive parameters. These results suggest that abnormal fluctuations of the accommodation in the patients with mild keratoconus may be caused by abnormal fluctuations of the cilliary body.
This PDF is available to Subscribers Only