Keratoconus is a progressive eye disease in which the normally round cornea thins and begins to bulge into a cone-like shape, causing distorted vision. What is Keratoconus? 2018;34(3):177–180. ]. Aim To define variables for the evaluation of keratoconus progression and to determine cut-off values. Ultrasound pachymetry can also be used to measure the thinnest zone on the cornea. If your condition progresses to an advanced stage, you may need a cornea transplant. Keratoconus can be managed to keep vision stable. Seven eyes of 4 patients with progression of keratoconus during pregnancy were included in this study. Learning what comes next in the process is most important. Later, you may have to be fitted with rigid, gas permeable contact lenses or other types of lenses, such as scleral lenses. The posterior surface has strong potential for measuring disease progression (Figure 3). Keratoconus was first described in detail in 1854 as a chronic, non-inflammatory ectasia of the cornea. Keratoconus often begins at puberty and most often is seen in teenagers or young adults. Prompt treatment can delay the progression of keratoconus but when the condition has deteriorated significantly the only treatment that can restore reasonable visual acuity is a corneal transplant. One-sided confidence intervals were calculated using both a normal and keratoconic population. Keratoconus may progress for 10-20 years and then slow in its progression. The calculation of the κ value was based on the difference between the extent of agreement with the standard observed compared to the extent of agreement expected due to chance alone. Treatments for keratoconus, such as specialized contact lenses, Intacs, collagen cross-linking, and corneal transplants, can all be beneficial. lowed for progression. Modern corneal tomography, including both anterior and posterior elevation and pachymetric data can be used to screen for ectatic progression, be employed to Being diagnosed with Keratoconus is a hard thing. The renowned historian and author Daniel J. Boorstin famously said: " … the greatest obstacle to discovery is not ignorance—it is the illusion of knowledge." One factor known to contribute to progression of keratoconus is eye rubbing. Scleral contact lenses give the most consistently reliable results with excellent vision and comfort. The mean age of patients and the mean follow-up duration were 29.3 years and 39 months, respectively. 1. Computerized videokeratography is useful in detecting early keratoconus and allows following its progression. [J Refract Surg. Progression was defined as an increase of Kmax of the anterior corneal surface of at least 1.00 diopter (D) over a period of 12 months, as demonstrated by corneal topography (Keratograph C) or Scheimpflug imaging (Pentacam 70700). CONCLUSIONS: The results suggest that stratification of waiting time according to the patient's age is required to reduce the risk of further progression of keratoconus. To use these parameters to determine progression, we first had to determine the measurement noise levels associated with each parameter. Over the past 5-10 years, corneal collagen crosslinking has become a promising treatment for slowing or stopping the progression of keratoconus, although most of the studies have been in adults. Hence, it is difficult to ascertain the exact sequence of steps involved in the progression of the disease, as every keratoconic button contains many stages of destruction and healing simultaneously. Some change in the posterior surface can be seen with contact lens wear, but not nearly as much as on the anterior surface. When calculating the κ value, progression to keratoplasty, a previously used unambiguous criterion of keratoconus progression, was used as a standard [8, 9]. Generally, there are two approaches to treating keratoconus: slowing the progression of the disease and improving your vision. In its earliest stages, keratoconus causes slight blurring and distortion of vision and increased sensitivity to glare and light. There are several tests that will be preformed on you to determine the condition of your cornea. 2018;34(3):177-180. … Romano V, Vinciguerra R, Arbabi EM, et al. For those patients with advanced keratoconus, scleral contact lenses can provide a dramatic improvement in vision and help them to achieve normal visual function. In the early stages of keratoconus, you might be able to correct vision problems with glasses or soft contact lenses. 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