| 摘要 |
PROBLEM TO BE SOLVED: To provide accurate applanation tonometry for measuring intraocular pressure close to a true intraocular pressure without receiving influence of a corneal thickness, corneal curvature, corneal astigmatism, cornea hardness, internal volume of an eyeball, or the like, and to provide a tonometer provided with a function of the tonometry. SOLUTION: A multielement type pressure sensor 1 is force-fitted from a corneal vertex to detect an area flattened by the contact with the cornea of the multielement type pressure sensor 1 and to detect its pressurizing force by a pressure sensor 2. The function of the obtained flattened area and pressurizing force, that is a change, over time, and influences of the corneal thickness, corneal curvature, corneal astigmatism, cornea hardness, internal volume of the eyeball, an eyeball extension degree, or the like, on the intraocular pressure are corrected by a correction arithmetic means to calculate the intraocular pressure close to the true intraocular pressure with a computer 3. |
