A Tonometry Device Measures Pressure In Various Body Parts, Including The Eyeball Or Intraocular Pressure
Tonometry is a diagnostic technique that is commonly used to
measure the intraocular pressure (IOP) of the eye. IOP is the fluid pressure
inside the eye and is an important indicator of the health of the eye. High
intraocular pressure can lead to glaucoma, a condition that can cause permanent
vision loss. Tonometry
Device is used to
measure the IOP and are an important tool for diagnosing and managing glaucoma.
According To Coherent
Market Insights, Global Tonometry Device Market Is Estimated To Be Valued At
US$ 109.68 Million In 2022 And Is Expected To Exhibit A CAGR Of 6.1% During The
Forecast Period (2022-2030).
There are several types of Tonometry Device available, each with its own advantages and disadvantages.
Goldmann Applanation
Tonometer (GAT)- The
Goldmann applanation tonometer (GAT) is the most commonly used tonometer in
clinical practice. It uses a small probe that is placed on the cornea to
measure the IOP. The probe is attached to a device that has a calibrated scale
that indicates the pressure in millimeters of mercury (mmHg).
To measure the IOP, the probe is first sterilized and coated
with a small amount of anesthetic eye drops. The patient is then asked to sit
in a chair and look straight ahead while the tonometer is gently placed on the
cornea. The tonometer applies a small amount of force to the cornea, which
flattens a small area of the cornea. The amount of force required to flatten
the cornea is directly proportional to the IOP. The tonometer then measures the
IOP and displays the result on the calibrated scale.
The GAT is accurate and reliable, but it requires a skilled
operator to use it correctly. The procedure can be uncomfortable for the
patient, and there is a small risk of corneal abrasion or infection if the
probe is not sterilized properly.
Non-Contact Tonometry
(NCT)- Non-contact
tonometry (NCT) is a newer technique that does not require contact with the
cornea. Instead, it uses a puff of air to measure the IOP. The device consists
of a small machine that emits a puff of air onto the cornea. The machine
measures the force of the air as it bounces back off the cornea, which is
directly proportional to the IOP.
NCT is quick, painless, and requires no anesthetic eye drops.
However, it is not as accurate as GAT, especially in patients with thick
corneas. It is also not suitable for patients with corneal irregularities, such
as scarring or astigmatism.
Surgical
Equipment
is a specially created tool for carrying out particular surgeries and
operations, such changing biological tissue or providing accessibility for
inside body views.
Dynamic Contour
Tonometry (DCT)- Dynamic
contour tonometry (DCT) is a newer technique that measures the IOP by
contouring to the shape of the cornea. It uses a small probe that is placed on
the cornea, similar to GAT. However, instead of applying a fixed amount of
force to the cornea, DCT measures the amount of force required to indent the
cornea. The device then uses this information to calculate the IOP.
DCT is more accurate than NCT and is suitable for patients
with corneal irregularities. However, it is more expensive than GAT and
requires a skilled operator to use it correctly.
Tono-Pen -The Tono-Pen is a handheld tonometer
that is similar to GAT. It uses a small probe that is placed on the cornea to
measure the IOP. However, unlike GAT, the Tono-Pen is portable and can be used
in a variety of settings, including in the field or in a doctor's office.
Comments
Post a Comment