applanation

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ap·pla·na·tion

(ap'lan-ā'shŭn),
In tonometry, the flattening of the cornea by pressure. Intraocular pressure is directly proportional to external pressure, and inversely proportional to the area flattened.
See also: applanation tonometer.
[L. ad, toward, + planum, plane]

applanation

/ap·pla·na·tion/ (ap″lah-na´shun) undue flatness, as of the cornea.

ap·pla·na·tion

(ap'lă-nā'shŭn)
tonometry The flattening of the cornea by pressure. Intraocular pressure is directly proportional to external pressure, and inversely proportional to the area flattened.
See also: applanation tonometer
[L. ad, toward, + planum, plane]

applanation

(ap″lă-nā′shŏn) [L. applanare, to flatten]
Flattening, esp. of the corneal surface.
applanate (ap′lă-nāt″, a-plā′nāt″)
References in periodicals archive ?
The Imbert-Fick principle states that the IOP can be estimated indirectly via measuring the force required to applanate or 'flatten' a known area of the cornea.
42) Like GAT, it measures the force required to applanate the cornea, though instead achieves applanation via the rapid application of a collimated air-pulse.
applanate species of Hypotrachyna and Cladonia species of the C.
The device was first introduced around 1957 and it is based on the Imbert-Fick principle, which states that for a fluid-filled encapsulated sphere, the pressure of the fluid within the sphere is proportional to the force required to applanate an external area of the sphere.
GAT operates via the Imbert-Fick principle--this principle states that the IOP can be estimated indirectly via measuring the force required to applanate or "flatten" a given area of the cornea.
21) Like Goldmann tonometry, it measures the force required to applanate the cornea, though instead achieves applanation via the rapid application of a columnated air-pulse to the cornea.
However, both GAT and NCT applanate an area that is over 3mm in diameter, and it has been known for many years that the cornea increases in thickness towards the periphery.