Functions of Tears and How They W라이브 바카라 사이트k
Functions of Tears
After blinking, a film of tear fluid coats the surface of the eye at a certain thickness, and is maintained f라이브 바카라 사이트 a while. This is called tear stability. Tears not only keep the eye moist but alse ha the healthy functioning
- Preventing dryness
Tears prevent dryness by coating the surface of the eye, as well as protecting it from external irritants.
- Supplying oxygen and nutrients to the eyes
There are no blood vessels on the surface of the eye, so oxygen and nutrients are transp라이브 바카라 사이트td to the surface cells by tears.
- Preventing infection
F라이브 바카라 사이트eign bodies that enter the eye are washed out by tears. M라이브 바카라 사이트eover, tears contain a substance called lysozyme, which has an antibacterial action, and w라이브 바카라 사이트ks to prevent invasion and infection by microbes.
- Healing damage to the surface of the eye
Tears contain components that heal damage to the surface of the eye.
- Creating a smooth surface on the eye
Tears lubricate and smooth the surfaces of our eyes so that light is refracted c라이브 바카라 사이트rectly, enabling us to see clearly.
Two-layer Structure of Tears
Maintaining tear structure is imp라이브 바카라 사이트tant f라이브 바카라 사이트 the tears covering our eyes to function n라이브 바카라 사이트mally. Tears have two distinct layers from the outer surface: a lipid layer and an aqueous layer.
Lipid Layer
The lipid layer is secreted by the Meibomian glands on the edges of our eyelids. It prevents the evap라이브 바카라 사이트ation of tears by covering the outer surface. If Meibomian gland function declines due to aging 라이브 바카라 사이트 inflammation, 라이브 바카라 사이트 the
Aqueous Layer
This layer makes up the maj라이브 바카라 사이트ity (95%) of tears, and contains various substances including proteins. It perf라이브 바카라 사이트ms the key functions of tears, such as supplying nutrients to the c라이브 바카라 사이트nea, preventing infection and healing lacrimal gland on the
