What is a paachyter?

The corneal pachymother is a scientific tool used to measure the corneal thickness, transparent tissue similar to the windows on the front of the eye. This process, which is called pachymmetry, uses laser, light waves or ultrasound to determine the distance in micrometers between the front and rear surfaces of the cornea. Once the device measures the thickness of the cornea, the pachymeter displays the number of micrometers or the shape of the corneal wave (CWF). Ophthalmologists use pachymmetry measurements to detect, evaluate and monitor various eye conditions. In addition, refractive surgeons routinely use a pre -operative evaluation of patients with laser assisted in situ keratomileusis (lasik) and implementation of limbal relaxation sections (LRI).

The corneal thickness with a smell of the smell provides critical information in the treatment of glaucoma, a degenerative optical nerve disease associated with high -eye pressures. Studies show that traditional methods of eye pressure detection underestimate eye pressure in patients with abnormally thin cornea. PacIenti with a thin cornea and glaucoma may be an increased risk of damage to glaucoma due to the underestimation of the eye pressure. On the other hand, the evaluation of patients with stronger than normal cornea can bring high eye pressure values, although actual eye pressures may be normal. There are several methods for adjusting the measured eye pressure to respond to inaccuracies due to the changes in the corneal thickness.

diseases that affect the cornea may result in the disting and expanding the thickness of the cornea. For example, Fuch's corneal dystrophy is a progressive disease that destroys endothelial cells that line the inner cornea and generally remove the corneal fluid. Without the normal function of endothelial cells Co ORNEA eventually become opaque, with the values ​​of pachymmetry exceed 600 micrometers. The ophthalmologist will use the pachymeter to monitor the thickness of the cornea and evaluate the effectiveness of its treatment.

Lasik isThe procedure that changes the shape of the cornea to change the way the eye lags behind the light. Ultraviolet laser bright planes of the cornea, flattened areas that are too steep. When the patient undergoes a lasik, the laser plays the cornea with a fixed amount for each diopter of the force he corrects. Ophthalmologists use the pachymeter preoperatively to determine whether the patient has enough corneal material to allow full treatment without the cornea too thin. Corneal ectassia or bulging may occur after surgery if the cornea is too thin, causing an irregular corneal surface and vision distortion.

In cases of astigmatism, ophthalmologists can reduce the cornea in steep zones to allow the profile to flatten in this area. These slices are limited to limb relaxation slices. Before setting the depth of the adjustable diamond blade used to create cuts, the surgeon will measure the thickness of the peripheral cornea. Ideally, the section depth should be about 90 percent of the total thickness in the cutting areau. Pachymetry helps the surgeon to avoid perforation with the whole cornea.