Cock's eye is like green bean size, also oval, usually yellowish, after removing the outside skin, there will be many kinds of small prickly things. Eye is usually long in the foot, is subject to friction or pressure after the formation, can use corns cream to do treatment, can also be done through the laser treatment, during the period of time to let the affected area dry and hygienic, wear shoes and socks is best to choose loose and breathable good quality. Chicken eye, refers to the patient's local skin is subjected to long-term friction, or long-term pressure, which induces the patient's local skin to appear conical thickening of the stratum corneum. In the structure of corns, there are three major parts, including the nucleus of the cuticle center, and the base. Corns occur on the soles of the feet and toes, and are common in young people. This is due to the fact that young people walk more and have more friction on their feet.

Because corns are a kind of proliferative stratum corneum caused by long-term extrusion, the form of full cone, the base is located in the skin surface, embedded in the skin. Because of the unique structure of the corns, the spikes in the structure will be repeatedly thickened, and then gradually protrude into the dermis of the patient's feet, which in turn may compress the nerve endings deep in the patient's skin. Therefore, patients with corns, after the corns become larger, will show obvious once walking, it will cause obvious pain.

The shape of the corns is very special, between its overall conical shape, therefore, seen at the patient's skin, is the bottom of the corns, specifically manifested as a round. The color of the corns is pale and yellowish, and since they are composed of keratinized skin, they are hard and have clear borders. It should be made clear that the large underside of the corns, which is usually the size of a soybean, protrudes from the surface of the skin. Therefore, some people may feel that it is similar to the eyes of chickens, so it is named "corns".

The clinical manifestations of corns are dominated by two types, namely corns composed of keratin plugs and corns composed of hypertrophic plaques.

The corneal plug composed of corns are generally larger, can be larger than soybean, the surface is also similar to soybean, mostly smooth plane, slightly higher than the skin surface, the border is clear, yellow color, light color. A typical structure of corns is a clearly inverted cone shaped structure found in the center of the corns and showing an inward embedding in the dermis. As mentioned above, the inward orientation of the corns tends to compress the nerve endings in the dermis of the patient. As a result, patients with corns tend to experience significant pain when walking. This type of corns are more likely to be found on the feet and friction parts.