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목적: 원발폐쇄각 및 정상군에서 Oculus Pentacam system (Oculus Inc., Germany)과 Hi-scan ultrasound biomicroscopy (OPTIKON 2000, Rome, Italy)의 전방계측치를 비교함으로써 PentacamⓇ의 신뢰도를 평가하고자 했다. 대상과 방법: 2006년 6월부터 2007년 1월까지 내원한 원발폐쇄각군 26명(51안)과 정상군 20명(39안), 총 46명(90안)에 대해 전향적 연구 를 하였다. UBM과 PentacamⓇ의 전방계측치와 폐쇄각 진단능력을 비교하였다. 결과: 전방깊이는 정상군(r=0.821)과 환자군(r=0.957)에서 두 기계간의 강한 상관관계를, 전방각은 정상군(r=0.523)과 환자군(r=0.456)에서 중등도 상관관계와 양호한 일치도를 보였다. ROC curve로써 평가한 전방각 측정값의 폐쇄각 진단능력(AUC of UBM, 0.942; AUC of PentacamⓇ, 0.931)은 비슷하였다. 결론: 두 도구의 전방계측치는 고도 또는 중등도의 상관관계, 양호한 일치도 그리고 비슷한 폐쇄각 진단능력을 보이므로 폐쇄각의 진단 에 PentacamⓇ의 역할이 기대된다.


Purpose: To evaluate the clinical reliability of PentacamⓇ by comparing anterior chamber parameters measured by Oculus Pentacam system (Oculus Inc., Germany) and Hi-scan ultrasound biomicroscopy (OPTIKON 2000, Rome, Italy) in primary angle closure (PAC) and normal patients. Methods: A prospective study was performed from June 2006 to January 2007. Fifty-one eyes in 26 primary angle-closure patients and 39 eyes in 20 normal control patients, for a total of 90 eyes of 46 patients were recruited from glaucoma out-patient clinics. The correlation and agreement of both measurements of anterior chamber depth and anterior chamber angle measured by UBM and PentacamⓇ were calculated. Sensitivity and specificity of each tool were also compared and the diagnostic value of angle closure was examined. Results: Anterior chamber depth measured by UBM and PentacamⓇ showed strong correlation in the normal control group (r=0.821) and PAC group (r=0.957). Anterior chamber angle showed moderate correlation in the normal control group (r=0.523) and PAC group (r=0.456) while good agreement was also observed. In diagnosing angle closure, anterior chamber measurements appear similar in UBM and PentacamⓇ using the ROC curve (AUC of UBM, 0.942; AUC of PentacamⓇ, 0.931). Conclusions: PentacamⓇ shows high to moderate correlation of anterior chamber measurements and good agreement compared with UBM. PentacamⓇ shows similar ability in diagnosing angle closure compared with UBM and thus is expected to be a good tool in diagnosing angle closure.