What is a pentacam test?

What is a pentacam test?

The cornea – a Pentacam scan provides qualitative data used to assess the cornea. This includes topography and elevation maps of the anterior and posterior corneal surface, in addition to central and peripheral pachymetry. The capture of pachymetry allows for pachymetry-based IOP correction.

What is a pentacam used for?

The Pentacam system is commonly used in clinical practice for its myriad functions, including evaluation of cataracts, glaucoma screening, advanced calculations for the power of intraocular lenses, guiding deep anterior lamellar keratoplasty, and imaging of post-LASIK or photorefractive keratectomy (PRK) eyes.

How is pentacam done?

The Pentacam takes images of your cornea by using a rotating camera, thus producing a 3D photo of the interior part of your eye. When evaluating patients for LASIK, one of the key pieces of data is elevation analysis at the center of the cornea, and with this rotating camera, that measurement is very precise.

How much does a pentacam cost?

Some slit-scanning devices: Orbscan (Bausch + Lomb); Pentacam (Oculus); and Galilei G2 (Ziemer). The average cost of these instruments is $50,000. Some manufacturers also offer instruments that combine corneal topography with full optical wavefront aberrometry.

Why do we check pentacam in eyes?

The procedure itself is painless and brief. It is a noncontact examination that photographs the surface of the eye. Pentacam is not a routine test. Rather, it is used in diagnosing certain types of problems, in evaluating a disease’s progression, in fitting some types of contact lenses, and in planning surgery.

Is keratoconus serious?

Untreated keratoconus can lead to permanent vision loss. The changes to the cornea make it difficult for the eye to focus with or without eyeglasses or standard soft contact lenses.

What is pentacam report?

The Pentacam gives detailed information about anterior segment parameters that includes the anterior as well as the posterior corneal contour and elevation, pachymetry, astigmatism, pupil size, anterior chamber depth, 3 D model of the anterior segment and others.

What is pentacam in ophthalmology?

The Pentacam Comprehensive Eye Scanner is a rotating camera that photographs both the anterior (front) and posterior (back) surfaces and other areas of the cornea (the front part of the eye).

Is pentacam test painful?

How do you read pentacam results?

A value between 0 to -1 is considered normal and indicates a prolate shape (steep centre and flat periphery). A value >0 indicates an oblate cornea (flat centre and steep periphery) and a value < -1 indicates a hyperprolate cornea as seen in corneal ectasia.

What is the thickness of cornea?

An average cornea is between 540 µm and 560 µm. A thick cornea is 565 µm or more, with a very thick cornea being greater than 600 µm.

How do you read a pentacam scan?

Do corneas thin with age?

Thinning of the cornea at a rate of 3–7 μm per decade has been observed in older age in some ethnic groups. A study in 1998 with 1,242 participants aged 10–87 years showed that CCT decreased by 5–6 μm for each decade of life.

Is smile good for thin cornea?

Third-generation SMILE laser surgery (Small Incision Lenticule Extraction) is a game changer from both the corneal thickness and strength perspectives. The SMILE method removes deeper layers of corneal tissue, so that the superficial layers remain intact.

What is the main cause of keratoconus?

What causes keratoconus? Although keratoconus has been studied for decades, it remains poorly understood. The definitive cause of keratoconus is unknown, though it is believed that the predisposition to develop the disease is present at birth. A common finding in keratoconus is the loss of collagen in the cornea.