Professionally fitted spectacles normally correct defects in night vision, 3D vision and colour perception. Colour perception can be optimised with special filter lenses adapted to each wearer's personal defective colour vision. If the lenses are optimally fitted, feature an anti-reflection coating and correct the patient's current refractive status, they make a key contribution to enhancing colour perception. 3D perception and night vision can also be improved with perfectly fitted spectacles. It is important that the lenses take all of the eye's visual defects – also known as aberrations – into account. Therefore, it is essential to determine these aberrations right from the outset. The i.Profiler® and lenses featuring i.Scription® technology are ideal for identifying and correcting the aberrations of the eye - and achieve better vision, also in poor light or at night.
Lenses without i.Scription® technology correct aberrations only on the basis of the subjective refraction. The refraction values are obtained by using trial lenses, normally in well-lit surroundings. The prescription is therefore suitable for daylight conditions, but not necessarily for poor light. However, the i.Profiler® also measures the eye with the patient's pupil dilated, therefore imitating night vision, and can obtain the information required in this way. As a result, lenses are obtained that provide good vision during daytime conditions, and also for poor light or night-time vision. At the same time, contrast perception is often also increased because halo effects are reduced on the retina.
Although the i.Profiler® cannot sufficiently test colour perception because the retina plays a key role here, it has been shown that sharp vision is a must for the perception of rich, saturated colours. This means that more precise lenses also lead in many cases to better colour perception.