How does contact lens sediment form?

When contact lens wearers remove the lens, they will always find white or transparent particles on the contact lens, which is the lens sediment. Today, author will introduce how the sediment of contact lenses is formed, and how we should clean it.


The contents of contact lens sediments are mainly divided into two categories, one is the secretions produced by intraocular metabolism such as proteins, lipids and inorganic salts. Among them, the film-like, milky sediment is a large amount of protein in tears, and the slightly transparent particles are lipids. When we wear the lens, the tear film originally covered in the outermost layer of the eyeball will be transferred to the surface of the lens under the action of electric charge, and then gradually accumulated.

Another type of sediment is external pollutants such as cosmetics and dust. In fact, the lens is not fixed in the eye, but moves with the blink of an eye, and then relocates on the eye. The electric charge generated by this rotation will absorb various small particles in the air and deposit them on the lens. These particles may seem small, but they can do a lot of harm.


When people encounter problems such as insufficient tears, long-term wear, overnight wear, and eye surface inflammation, the sediment on the lens will double. If it is not completely removed, it will lead to obstructing vision, rubbing the cornea, breeding bacteria, and causing the eye to reject it. For these sediments, rubbing is a better cleaning method, if you find that there are protein deposits on the lens that can not be cleaned, you need to replace the lens immediately.

Contact lens hygiene and cleaning for lens maintenance and eye health are very important, pay attention to wear safety, maintain a clear vision, it is necessary to do the lens sediment cleaning work in time!