One of the commonest injuries to the eyelids is caused by the presence of a foreign body under the eyelid - a subtarsal foreign body. A small particle of grit lodges near the lower margin of the lid, but to see it the lid must be everted. Every medical student should be familiar with the simple technique of lid eversion. This is performed by gently grasping the lashes of the upper lid between finger and thumb and at the same time placing a glass rod horizontally across the lid. The eyelid is then gently everted by drawing the lid margin upwards and forwards. The manoeuvre is only achieved if the patient is asked to look down beforehand, and the everted lid is replaced by asking the patient to look upwards. If a small foreign body is seen, it is usually a simple matter to remove it using a cotton-wool bud (Figure 5.15).
Cuts on the eyelids can be caused by broken glass or sharp objects,such as the ends of screwdrivers. The important thing here is to realise that cuts on the lid margin can leave the patient with a permanently watering eye if not sewn up
Figure 5.15. Everting the upper eyelid.D3
with proper microscopic control and using fine sutures. The lids can also be injured by chemical burns or flash burns. Exposure to ultraviolet light, as from a welder's arc or in snow blindness, can cause oedema and erythema of the eyelids. This might appear after an hour or two but resolves spontaneously after about two days.
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Rosacea and Eczema are two skin conditions that are fairly commonly found throughout the world. Each of them is characterized by different features, and can be both discomfiting as well as result in undesirable appearance features. In a nutshell, theyre problems that many would want to deal with.