Keratoconus (KC) is a progressive corneal stromal thinning disorder in which the cornea bulges outwards into a cone-like shape. 1,2 It is the most common primary corneal ectasia with a multifactorial aetiology, including genetic and environmental factors. 3 KC causes a myopic shift and irregular astigmatism, but its progression can also lead to thinning and protrusion. 4 These changes are caused by a disturbance of the fragile balance of well-distributed corneal extracellular matrix and cells. 5 In advanced cases, this disarrangement may lead to corneal scarring and hydrops with evident opalescence. 6 In the first stages of the disease, the patient is typically asymptomatic, but as it progresses, the visual symptoms get worse. In the advanced stages, common symptoms of KC are blurry and distorted vision,