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The Ocular Response Analyzer and Pascal DCT Tonometers are less affected by CCT than the Goldmann tonometer. Conversely, non-contact and rebound tonometers are more affected. [23] [24] [25] Corneal thickness varies among individuals as well as with age and race. It is reduced in certain disease and following LASIK surgery.
Armand Imbert (1850-1922) and Adolf Fick (1829-1901) both demonstrated, independently of each other, that in ocular tonometry the tension of the wall can be neutralized when the application of the tonometer produces a flat surface instead of a convex one, and the reading of the tonometer (P) then equals (T) the IOP," whence all forces cancel each other.
Theoretically, average corneal rigidity (taken as 520 μm for GAT) and the capillary attraction of the tear meniscus cancel each other out when the flattened area has the 3.06 mm diameter contact surface of the Goldmann prism, which is applied to the cornea using the Goldmann tonometer with a measurable amount of force from which the IOP is ...
A phoropter made by Reichert. Phoroptor is a registered trademark currently owned by Reichert Technologies, filed April 25, 1921, by DeZeng Standard of New Jersey, with the USPTO, serial number 71146698. The word was coined at that time for the newest version of their phoro-optometer.
The Schiotz tonometer consists of a curved footplate which is placed on the cornea of a supine patient. A weighted plunger attached to the footplate sinks into the cornea. A scale then gives a reading depending on how much the plunger sinks into the cornea, and a conversion table converts the scale reading into IOP measured in mmHg.
Reichert investigated the role of neural stem cells in the development of the brain using the fruit fly Drosophila as a model. He discovered a molecular production program followed by stem cells as they develop in the brain. A similar, evolutionary conserved developmental program also plays a role in the formation of the brain in vertebrates
Tympanometry in a boy in Cameroon.. After an otoscopy (examination of the ear with an otoscope) to ensure that the path to the eardrum is clear and there is no perforation, the test is performed by inserting the tympanometer probe in the ear canal.
With Ernst Gaupp, he was co-architect of the Reichert–Gaupp theory concerning the origin of mammalian ossicles of the ear. [3] His name is lent to the eponymous "Reichert's cartilage", described as a cartilaginous structure in the second branchial arch from which develop the temporal styloid processes , the stylohyoid ligaments , and the ...