Keratoconus

The cornea is a circular, transparent membrane located on the outer layer of the anterior part of the eyeball, and it is an important component of the eye. Keratoconus refers to the thinning of the central cornea, which bulges forward into a conical shape, causing the progression of myopia and astigmatism, ultimately leading to high astigmatism or vision impairment. It is a progressive (the condition will continuously worsen), non-inflammatory (not caused by inflammation of the cornea or ocular surface tissues), degenerative corneal disease. It is a contraindication for many refractive surgeries. This disease is common in young people aged 16-20, with a higher incidence in females. The main symptoms include irregular astigmatism and progressive vision loss.