النرويج تحتفى بالاستاذ فتحى الضو بحضور شوقى بدرى والنخبة - صور تتحدث

Quote: Akkomodering is the eye's ability to adjust vision at different distances. Akkomodering eye is through a change of lens refractive power. Through active influence of ciliarmuskelspenningen the voltage in the lens capsule changes. The lens changes both its external form and internal structure. The combination of these changes increases the lens refractive power. Difficulties in changing akkomoderingen makes you not look sharp at certain distances - up to 1.5 meters. This is called alderslangsynthet (presbyopia) and manifests itself in the first instance by the person needing reading glasses, but also the return to(akkomoderingshvile) means that the age farsighted person for short periods may have trouble seeing at a distance.