摘要
Purpose: The object of this study was to compare intraocular pressure measurem ents obtained with the TGDc-01 “PRA”, a new, transpalpebral indentation tonom eter, with those from Goldmann applanation tonometry in normal and glaucomatous eyes. Methods and Patients: Forty healthy eyes and 185 eyes suffering from glauc oma were included in the study. For Goldmann tonometry three measurements and fo r the TGDc01 ten measurements were performed in a random order. All participants were placed in an upright position for all measurements. Results: In both group s a systematic increase of intraocular pressure was found within the TGDc-01-m easurements. Therefore, the first 3 measurements of each device were used for fu rther statistical analysis. No learning curve could be demonstrated for the TGDc -01-measurement with normal eyes. Within the group of normal eyes the mean 1OD obtained with the TGDc-01 was 1.84 mmHg lower than the mean 1OD obtained with Goldmann tonometry (two-sided Student’s t-test; P=0.003). In the group of gla ucomatous eyes, the mean intraocular pressure obtained with the Goldmann tonomet ry was 19.7 ±10.1 mmHg, with the TGDC-01 18.1 ±7.1 mmHg (coefficient of correlation r=0.64, P< 0.001). The mean standard deviatio n of intraocular pressure measurements with Goldmann tonometry was 1.2 ±.0.9 mm Hg, with the TGDc01 3.1 ±2.1 mmHg. TGDc-01-measurements over-estimated intra ocular pressure compared to Goldmann tonometry up to values of 16 mmHg and under estimated intraocular pressure at values over 16 mmHg. The difference increased by 5.5 mmHg per 10 mmHg Goldmann tonometry. The probability of success, defined as TGDc-01-recordings within ±3 mmHg of the Goldmann tonometry recordings, wa s less than 53 %between 5 and 20 mmHg and less than 30 %between 20 and 30 mmHg . Intraocular pressure (Goldmann tonometry) over 30 mmHg was always accompanied by TGDc-01-measurements lower than 3 mmHg. Conclusion: In eyes with elevated i ntraocular pressure, the TGDc-01 “PRA”significantly underestimated the intrao cular pressure measurement when compared to the gold standard, Goldmann tonometr y. At present, measurement of the intraocular pressure with the TGDc-01 should not be used for clinical management of patients with glaucoma.
Purpose: The object of this study was to compare intraocular pressure measurem ents obtained with the TGDc-01 “PRA”, a new, transpalpebral indentation tonom eter, with those from Goldmann applanation tonometry in normal and glaucomatous eyes. Methods and Patients: Forty healthy eyes and 185 eyes suffering from glauc oma were included in the study. For Goldmann tonometry three measurements and fo r the TGDc01 ten measurements were performed in a random order. All participants were placed in an upright position for all measurements. Results: In both group s a systematic increase of intraocular pressure was found within the TGDc-01-m easurements. Therefore, the first 3 measurements of each device were used for fu rther statistical analysis. No learning curve could be demonstrated for the TGDc -01-measurement with normal eyes. Within the group of normal eyes the mean 1OD obtained with the TGDc-01 was 1.84 mmHg lower than the mean 1OD obtained with Goldmann tonometry (two-sided Student's t-test; P=0.003). In the group of gla ucomatous eyes, the mean intraocular pressure obtained with the Goldmann tonomet ry was 19.7 ±10.1 mmHg, with the TGDC-01 18.1 ±7.1 mmHg (coefficient of correlation r=0.64, P< 0.001). The mean standard deviatio n of intraocular pressure measurements with Goldmann tonometry was 1.2 ±.0.9 mm Hg, with the TGDc01 3.1 ±2.1 mmHg. TGDc-01-measurements over-estimated intra ocular pressure compared to Goldmann tonometry up to values of 16 mmHg and under estimated intraocular pressure at values over 16 mmHg. The difference increased by 5.5 mmHg per 10 mmHg Goldmann tonometry. The probability of success, defined as TGDc-01-recordings within ±3 mmHg of the Goldmann tonometry recordings, wa s less than 53 %between 5 and 20 mmHg and less than 30 %between 20 and 30 mmHg . Intraocular pressure (Goldmann tonometry) over 30 mmHg was always accompanied by TGDc-01-measurements lower than 3 mmHg. Conclusion: In eyes with elevated i ntraocular pressure, the TGDc-01 “PRA”significantly underestimated the intrao cular pressure measurement when compared to the gold standard, Goldmann tonometr y. At present, measurement of the intraocular pressure with the TGDc-01 should not be used for clinical management of patients with glaucoma.
出处
《世界核心医学期刊文摘（眼科学分册）》
2005年第8期57-58,共2页
Digest of the World Core Medical Journals:Ophthalmology
