Keratoconus is a degenerative turmoil of the eye which has structural changes in the cornea. When the disease grows it turns to more conical shape than its normal gradual curve. Keratoconus is likely to cause extensive deformation of vision with multiple images and linings. This disease can develop sensitivity to the bright light. The name of the disease is derived from the Greek language as it means ‘horn shaped’. This disease turns very severe in a person in their twenties and thirties. Keratoconus can affect both the eyes and therefore the weakening in vision can affect the patient's ability to drive or read usual print. Surgery can be also useful to treat this disease if it further develops. Although the cause of this disease is still unknown however, it has been expected that the association of detrimental enzyme activity within the cornea is highly prone to infect with Keratoconus. Doctors also accept to have the link of genetic transmission of this disease.
Blurring vision is the most typical symptom of Keratoconus as it is uncertain in the early stage of this disease but when it grows the patients can understand its infection gradually. However, symptoms of keratoconus are alike with some other similar eye diseases but the foremost symptoms which are not similar to other eye diseases is vision deterioration in speedy way. Infected people eventually encounter with impaired visual acuity at all distances and poor night vision. Sometimes the infected people encounter with worse of vision on his/her one eye than the other. Photophobia is also one of the most important symptoms of this disease. Itching of the eyes is quite common symptom of keratoconus. However, feeling of pain is somewhat lesser than other eye diseases.
The primary symptom of keratoconus feeling the appearance of multiple 'ghost' images in front of the infected people. This type of symptom is called as monocular polyopia. When the background is very dark then this kind of symptom is experienced by the infected people.
There are no specific causes of attacking keratoconus to human eyes. The attack of keratoconus is still a mystery. However, doctors have found some of the most important factors about the cause of keratoconus such as genetic and environmental or cellular. However, there is a controversy regarding the matter of the frequency of occurrence of keratoconus in close family members which is not clearly defined. According to the recent study which determines that the chance of genetic cause of this disease is only 6% to 19%. Doctors also accept that keratoconus can be associated with asthma, allergies, and eczema.
Some of the similar types of Keratoconus are Keratoglobus, Pellucid Marginal Degeneration and Posterior keratoconus.