TONOMETRY AND TONOGRAPHY
نویسندگان
چکیده
منابع مشابه
Value of tonometry and tonography in the diagnosis of glaucoma.
In a patient with 6/6 vision, the i/i object on the Goldmann perimeter disappears completely in the 70's and the x/2 object dispapears in the 8o's provided there are no lens opacities to accelerate the process. The o/ i disappears much earlier. With the 1/2 it was found that there was much variation between people and the mean isopter was around 280. In some it reached 400 but in others it was ...
متن کاملConstant-area applanation tonography.
A tonography device, based on the MacKay-Marg tonometer, has been constructed which will applanate the cornea to a preselected area of 5.0 to 6.0 mm diameter and maintain that applanation area. The pressure decrease with time should resemble the pressure decrease following bolus injection of fluid into the eye. In most cases the pressure decreased in a linear slope, abruptly terminating in a pr...
متن کاملGonioscopy and tonography in glaucomatocyclitic crises.
(1) The condition is unilateral. (2) The eye remains white or at most only slightly congested during an attack. (3) Subjective symptoms are minimal and vision is usually not impaired to any degree. (4) Signs of cyclitis do not precede the glaucoma; posterior synechiae are never formed. (5) Attacks may last from a few hours to a month, but rarely more than 2 weeks. (6) Between attacks the eye sh...
متن کاملExperimental tonography on enucleated human eyes. II. The loss of intraocular fluid caused by tonography.
In clinical work, the loss of intraocular fluid caused by tonography (dV) is usually calculated according to the formula of Grant and Friedenwald. The validity of this formula has been tested by comparing the dV calculated from known factors in the formula with the dV measured directly on enucleated eyes. Our results show a good correlation between the two methods, especially when the rigidity ...
متن کاملEvaluation of Goldmann applanation tonometry, rebound tonometry and dynamic contour tonometry in keratoconus
PURPOSE To compare the intraocular pressure (IOP) measurements obtained with the rebound tonometry (RT), dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) in keratoconic corneas and to investigate the effects of central corneal thickness (CCT) and corneal radius of curvature (CR) on IOP measurements. METHODS Sixty-three eyes of 63 keratoconus patients were enrolled in t...
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ژورنال
عنوان ژورنال: International Ophthalmology Clinics
سال: 1963
ISSN: 0020-8167
DOI: 10.1097/00004397-196303000-00004