Optimal,
Natural Vision
after Lens Exchange
This requires 5 visual functions!
5 Visual Functions for Optimal, Natural Vision
Our natural vision is achieved through 5 visual functions, to put it simply. The requirements for Optimal, Natural Vision after lens exchange are met, as long as all 5 functions are operative. Click on the graphic below and see which effects the visual functions have on your vision. (Disclaimer: Visualization is for demonstration purposes only. Individual results may vary.)
Distant Function
The distant function is responsible for sharp distance vision, e.g. when looking at the London Skyline.
Near-intermediate Function
The near-intermediate function of the natural crystalline lens provides sharp, transition-free vision from far distances to close proximity. When you turn your eyes from the skyline to the smartphone, the lens changes its shape and projects a sharp image on the retina by focusing on the distance from the object viewed.
Protective Function
The protective function of the natural crystalline lens arranges for a natural colour perception and protects the retina from energised, damaging light. Looking at the London sky is perceived as pleasant, while a natural blue filter protects the retina.
Mesopic Function
The mesopic function ensures high-contrast vision even in situations of poor light conditions. Due to the special (spherical) shape of the lens you still enjoy adequate vision when there is twilight or fog. This function takes only effect when light conditions are poor.
Imaging Function
The imaging function of the cornea ensures distortion-free vision. In the event of a corneal astigmatism, the entire visual perception is distorted, incapacitating the imaging function.
