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목적 : To compare the corneal biomechanical and topographic parameters using an Ocular Response Analyzer(ORA; Reichert Ophthalmic Instruments, Depew, NY) and Pentacam HR®(Oculus Inc., Dutenhofen, Germany) in the eyes with atopic dermatitis(AD) to those in the normal controls.
방법 : The 43 eyes of patients with AD and the 43 eyes of normal subjects aged 30 years and younger were included. The individuals whose best corrected visual acuity was less than 20/20, with previous ocular surgery, and corneal pathologic condition were excluded. All subjects were performed the following measurements: noncontact tonometer, autorefractometer, Pentacam HR®, ORA, and ultrasonic pachymeter.
결과 : Mean corneal hysteresis(CH) and corneal resistance factor(CRF) values were lower in eyes with AD, but the difference was not statistically significant between the two groups(10.8±2.2 vs. 11.0±1.5 and 10.6±2.5 vs. 10.8±1.6 mmHg, respectively). IOPg and IOPcc were 14.9±3.9 vs.15.1±3.1, and 15.0 ±3.4 vs.14.9±3.2 mmHg in AD and control groups respectively(both P>0.05). The central corneal thickness, mean K values, and corneal volume were also similar between the two groups(both P>0.05). The corneal astigmatism was only statistically higher in the AD group (1.7±1.0 D(diopter) Vs. 1.0±0.7 D, P=0.002).
결론 : Almost all of the corneal parameters measured with the ORA and Pentacam HR® in eyes with AD showed no significant difference from that in eyes of normal controls. A knowledge of corneal characteristics may be helpful to understand the etiology of the keratoconus in patients with AD.
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