소아에서 저간섭성반사계, 자동각막곡률측정계, 각막지형도로 측정한 각막곡률측정치의 비교
Comparision of Corneal Refractive Power Measured with Opitcal Low-coherence Reflectometry, Autokeratometer, and Topography in Children
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목적: 소아에서 저간섭성반사계(Lenstar LS900 ® ), 자동각막곡률측정계(KR-8100 ® ), 각막지형도(Medmont E300 ® )로 측정한 각막곡률측정치를 비교하고자 한다. 대상과 방법: 160명 316안을 대상으로 Lenstar LS900 ® ,KR-8100 ® ,Medmont E300 ® 을 이용하여 flat K, steep K, mean K, astigmatism을 측정하였다. 10세 미만을 1군, 10세 이상 18세 미만을 2군, 18세 이상을 3군으로 나누어 측정치를 비교하였고, Bland-Altman plot을 이용하여 각 기기 간의 일치도를 분석하였다. 결과: 세 군 모두에서 대부분의 각막곡률측정치가 기기 간의 의미있는 차이를 보였다(p<0.05). 1군과 2군에서는 Lenstar LS900 ® 와KR-8100 ® 의 일치도가 가장 높았고, Medmont E300 ® 와 다른 두 기기 간의 일치도는 비교적 낮았다. 3군에서 flat K, astigmatism에서는 Lenstar LS900 ® 와 KR-8100 ® 의 일치도가 높고, Medmont E300 ® 의 일치도가 상대적으로 낮았다. 그러나 steep K와 mean K에서는 Medmont E300 ® 의 일치도가 높고, Lenstar LS900 ® 와 KR-8100 ® 의 일치도가 낮았다. 결론: 소아에서는 Medmont E300 ® 이 Lenstar LS900 ® ,KR-8100 ® 과 비교하여 낮은 일치도를 보인 반면, 성인에서는 기기 간의 일치도가 일관되지 않고 각막곡률측정치 지표에 따라 다양한 결과를 보였다.
Abstract
Purpose: To compare the keratometry obtained from optical low-coherence reflectometry (Lenstar LS900®), autokeratometer (KR-8100®), and topography (Medmont E300®) in children. Methods: A retrospective study was performed in 316 eyes of 160 subjects. Subjects were divided into 3 groups according to age. Group 1 was younger than 10 years, group 2 was older than 10 years and younger than 18 years, and group 3 was older than 18 years. Subjects were tested using the Lenstar LS900®, KR-8100®, and Medmont E300®. Comparisons were made for steep K, flat K, mean K, and astigmatism among three groups. Agreement among the 3 devices was examined using the Bland-Altman method. Results: The keratometry measured by Medmont E300® was highest, followed by that of Lenstar LS900® and KR-8100® in all 3 groups. Almost all keratometry was significantly different among the 3 devices except for the flat K measured by LS900® and KR-8100® in all 3 groups and flat K measured by KR-8100® and Medmont E300® in Group 3 (p < 0.05). With regard to mean K, the agreement between Lenstar LS900® and KR-8100® was better than that between the other two pairs in both Groups 1 and 2, while agreement between Lenstar LS900® and Medmont E300® was better in Group 3. The agreement between KR-8100® and Medmont E300® was worse than that between the other two pairs in Groups 1 and 3, while the agreement between Lenstar LS900® and Medmont E300® was worse in Group 2. Conclusions: There were significant differences in keratometry among the 3 devices in all 3 groups. In children, Medmont E300® showed relatively less agreement compared with the other two devices. In adults, however, the agreement between 2 devices showed variable results. Consideration of the keratometry measurement from Lenstar LS900®, KR-8100®, and Medmont E300® might be helpful to estimate accurate corneal keratometry in children.
참고문헌 (17)
- Friedman NE., "Corneal changes in schoolchildren", Optom Vis Sci, 73, pp.552~557 (1996)
- Lam CS., "A 2-year longitudinal study of myopia progression and optical component changes among Hong Kong schoolchildren", Optom Vis Sci, 76, pp.370~380 (1999)
- Huynh SC., "An evaluation of keratometry in 6-year-old children", Cornea, 25, pp.383~387 (2006)
- 박성진, "에이엘 스캔, 자동각막굴절계, 펜타캠의 각막 굴절력 비교 분석", 대한안과학회지, 55(7), pp.984~990 (2014), 대한안과학회
- Hashemi H., "Agreement study of keratometric values measured by Biograph", LENSTAR, auto-kerato-refractometer and Pentacam : decision for IOL calculation, 2014, pp.97, 450~455
- 김소윤, "여러 가지 기기에서의 각막곡률 비교", 대한안과학회지, 53(5), pp.618~625 (2012), 대한안과학회[DOI]
- 한정모, "자동각막굴절계, IOL Master, 각막지형도의 각막굴절력 및 각막난시 측정의 비교 분석", 대한안과학회지, 52(12), pp.1427~1433 (2011), 대한안과학회
- Whang WJ., "Comparison of refractive outcomes using five devices for the assessment of preoperative corneal power", Clin Exp Ophthalmol, 40, pp.425~432 (2012)
- Cruysberg LP., "Evaluation of the Lenstar LS 900 non-contact biometer", Br J Ophthalmol, 94, pp.106~110 (2010)
- Rohrer K., "Comparison and evaluation of ocular biometry using a new noncontact optical low-coherence reflectometer", Ophthalmology, 116, pp.2087~2092 (2009)
- Cho P., "The performance of four different corneal topographers on normal human corneas and its impact on orthokeratology lens fitting", Optom Vis Sci, 79, pp.175~183 (2002)
- Read SA., "Corneal topography with Scheimpflug imaging and videokeratography : comparative study of normal eyes", J Cataract Refract Surg, 35, pp.1072~1081 (2009)
- Chui WS., "A comparative study of the performance of different corneal topographers on children with respect to orthokeratology practice", Optom Vis Sci, 82, pp.420~427 (2005)
- González-Méijome JM., "A comparison of the ARK-700A autokeratometer and Medmont E300 corneal topographer when measuring peripheral corneal curvature", Ophthalmic Physiol Opt, 24, pp.391~398 (2004)
- Wang Q., "A comprehensive assessment of the precision and agreement of anterior corneal power measurements obtained using 8 different devices", PLoS One, 7, pp.e45607~ (2012)
- Shirayama M., "Comparison of corneal powers obtained from 4 different devices", Am J Ophthalmol, 148, pp.28.e1~35.e1 (2009)
- Liang CL., "Comparison of the handheld Retinomax K-Plus2 and on-table autokeratometers in children with and without cycloplegia", J Cataract Refract Surg, 30, pp.669~674 (2004)