Corneal ectasia is usually referred to keratoconus, but can also be due to irregular astigmatism which is sometimes developed post a refractive surgery like PRK or LASIK.
The causes of Corneal Ectasia and use of Scleral Lenses
Corneal ectasia is usually referred to keratoconus, but can also be due to irregular astigmatism which is sometimes developed post a refractive surgery like PRK or LASIK. In both these cases, the cornea of a person will keep on bulging leading to worsening or loss of vision. A condition in which the architecture of a person’s eye is damaged is referred to as Keratoconus. Even though the exact causes of this condition is yet to be identified, doctors believe that it is caused due to the excessive rubbing of the eye and hereditary traits.
Post lasikkk corneal ectasia is believed to be caused due to the removal of more-than-needed corneal tissues during the surgery. As a result, the cornea becomes weak and start bulging even under normal pressure. The bulging of the cornea is a serious issue which can even cause permanent loss of vision if not treated properly in time. Some risk factors which may cause post lasik ectasia are thin corneas from the beginning, severe myopia, corneal shape, non-uniform corneal thickness, and young age.
The normal lenses or glasses cannot make up for the corneal irregularities caused by keratoconus or post lasik corneal ectasia. Hence a new type of gas permeable lenses called the scleral lenses had been developed. Unlike the traditional gas permeable lenses, the scleral lenses are wider in diameter and rest on the white portion of the eye called sclera.
The scleral lenses are more comfortable to wear than the ordinary lenses and masks the cornea well. Added to this the liquid buffer in between the front of the eye and back of the lens fills the gap and provides more protection to the corneal tissues.
For more info on the causes of corneal ectasia and use of scleral lenses, visit www.eyefreedom.com now!