A clinical evaluation of the applanation pneumatonograph.
نویسندگان
چکیده
The applanation pneumatonograph combines pneumatic and electronic systems. It is used for measuring intraocular pressure, aqueous humour dynamics, and ocular pulsation. In the present study the PTG and the Goldmann tonometer have been used to measure the intraocular pressure in 40 normal and 40 glaucomatous eyes. It has been found that the results of the two instruments correlate well. The PTG readings have, generally, been found to be higher with a mean difference of 0-75 mmHg in the normal and 1-25 mmHg in the glaucomatous eye. The mean ocular pulse as determined in normal eyes was 3-25 +/-0-21 mmHg.
منابع مشابه
Rapid pneumatic and Mackay-Marg applanation tonometry
Glaucoma is usually considered to be adequately controlled when Goldmann applanation readings are below 22 mmHg. It is, however, now known that the intraocular pressure increases to a varying degree when the patient changes his posture from sitting to a recumbent position (Galin, McIvor, and Magruder, I963; Roberts and Rogers, I964; Hetland-Eriksen, Ig66a; Inglima, I966; Tarkkanen and Leikola, ...
متن کاملRapid pneumatic and Mackey-Marg applanation tonometry to evaluate the postural effect on intraocular pressure.
A postural study was conducted in three separate groups of subjects. The first group comprised 20 women volunteers with an average age of 20-75 years. In this group, the study was conducted by the pneumatonograph only. Mean pressure recorded was 15-65 +/- 0-25 mmHg and there was an average rise of 1-4 mmHg in supine posture. Groups 2 and 3 comprised 151 non-glaucomatous and 108 glaucomatous eye...
متن کاملClinical comparison of the ProTon and Tono-Pen tonometers with the Goldmann applanation tonometer.
A clinical evaluation of a new electron ProTon tonometer was performed comparing the values of intraocular pressure (IOP) measured using this instrument with those determined by a similar instrument, Tono-Pen XL, and by Goldmann applanation tonometry. The mean IOP measured in 106 eyes with the ProTon tonometer was not significantly different from that determined with Goldmann applanation, while...
متن کاملPostural change and intraocular pressure in glaucomatous eyes.
Several authors (Anderson and Grant, I973; Galin, Mclvor, and Magruder, I963; HetlandEriksen, I966; Kriegelstein and Langham, 1975a; Roberts and Rogers, I964; Tarkkanen and Leikola, I967) have reported that in normal subjects and in glaucomatous patients the intraocular pressure (IOP) in the supine position is about 2-5 mmHg higher than in the seated position. The measurements were carried out ...
متن کاملPerkins hand-held applanation tonometer. A clinical evaluation.
MANY ophthalmologists measure intra-ocular pressure with the Goldmann tonometer. It is neither portable nor capable of being used with the patient supine, which is disadvantageous in glaucoma screening programmes when it is often necessary to examine sick patients in their homes. An applanation tonometer, which is portable and can be used with the patient supine, sitting, or even standing, has ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- The British journal of ophthalmology
دوره 60 2 شماره
صفحات -
تاریخ انتشار 1976