Clinical ophthalmology (Auckland, N.Z.) · 2026
Supine and Sitting Intraocular Pressure Measurements Using iCare HOME2 Self-Tonometry and iCare IC200 Rebound Tonometry in Japanese Open-Angle Glaucoma Patients.
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Nakamura Sho, Hollό Gábor, Fukuda Yasumasa, Ishida Tomoka, Kita Yoshiyuki
Аннотация
PURPOSE: To evaluate supine and sitting intraocular pressure (IOP) self-measurements using iCare-HOME2 self-tonometry (iCare-HOME2) and to compare the results with corresponding iCare IC200 IOP (iCare) measurements by health care professionals on Japanese glaucoma patients.
METHODS: Thirty-six eyes of 36 consecutive primary open-angle and normal-tension glaucoma patients were examined. IOP was measured in sitting position using Goldmann applanation tonometry (GAT), iCare, and iCare-HOME2 self-tonometry, then after a 10-minute supine rest with iCare tonometry and iCare-HOME2 self-tonometry in supine position. ANOVA, intraclass correlation coefficients (ICC) and Bland-Altman analyses were used.
RESULTS: Mean IOPs were 15.8 mmHg (GAT), 13.6 mmHg (iCare), and 14.6 mmHg (iCare-HOME2) in sitting (P ≤ 0.049), and 16.8 mmHg (iCare) and 16.8 mmHg (iCare-HOME2) in supine position (P = 0.99). ICCs between iCare-HOME2 and iCare were 0.899 (95% CI, 0.712-0.957) in sitting and 0.976 (95% CI, 0.954-0.988) in supine position. Bland-Altman analysis showed minimal bias in both positions (mean differences: 1.03 mmHg [limits of agreement: -2.07 to 4.14] in sitting; and -0.003 mmHg [-2.18 to 2.17] in supine position).
CONCLUSION: iCare-HOME2 self-tonometry can accurately measure IOP in both sitting and supine positions. Based on the ICC values, the agreement between IOP values measured by health-care professionals with iCare and by trained open-angle glaucoma patients with iCare HOME2 was higher in the supine position than in the sitting position. Our results suggest that self-measured sitting and supine iCare-HOME2 IOP data are reliable on trained glaucoma patients and may potentially be applied to assist clinical decision making in glaucoma care.
METHODS: Thirty-six eyes of 36 consecutive primary open-angle and normal-tension glaucoma patients were examined. IOP was measured in sitting position using Goldmann applanation tonometry (GAT), iCare, and iCare-HOME2 self-tonometry, then after a 10-minute supine rest with iCare tonometry and iCare-HOME2 self-tonometry in supine position. ANOVA, intraclass correlation coefficients (ICC) and Bland-Altman analyses were used.
RESULTS: Mean IOPs were 15.8 mmHg (GAT), 13.6 mmHg (iCare), and 14.6 mmHg (iCare-HOME2) in sitting (P ≤ 0.049), and 16.8 mmHg (iCare) and 16.8 mmHg (iCare-HOME2) in supine position (P = 0.99). ICCs between iCare-HOME2 and iCare were 0.899 (95% CI, 0.712-0.957) in sitting and 0.976 (95% CI, 0.954-0.988) in supine position. Bland-Altman analysis showed minimal bias in both positions (mean differences: 1.03 mmHg [limits of agreement: -2.07 to 4.14] in sitting; and -0.003 mmHg [-2.18 to 2.17] in supine position).
CONCLUSION: iCare-HOME2 self-tonometry can accurately measure IOP in both sitting and supine positions. Based on the ICC values, the agreement between IOP values measured by health-care professionals with iCare and by trained open-angle glaucoma patients with iCare HOME2 was higher in the supine position than in the sitting position. Our results suggest that self-measured sitting and supine iCare-HOME2 IOP data are reliable on trained glaucoma patients and may potentially be applied to assist clinical decision making in glaucoma care.