hat
Pou anpil moun, jou a genyen kontou sèlman ak priz la maten sou linèt yo, gade nan se file. Men, ki jan linèt aktyèlman travay ak ki sa egzakteman yon ankadreman spektak konpoze de? Nòmal-je m 'je yo pa gen okenn pwoblèm gade objè byen file tou pre ak lwen. Nan je nòmal-je, lantiy la konsantre reyon yo nan limyè k ap antre nan nan elèv la jis nan yon fason ke yo satisfè sou retin an andedan je a. Lantiy la tèt li se fleksib jiska yon seri sèten epi yo ka konsa konpanse pou pi piti andikap vizyèl kòm byen ke pou distans diferan. Si lantiy la pa kapab peye sa a bundling nan limyè sou retin a, reseptè yo ka sèlman pase sou yon imaj twoub.
eng
For many people, the day wins contours only with the morning grip on the glasses, the view is sharpened. But how do eyeglasses actually work and what exactly does a spectacle frame consist of? Normal-sighted eyes do not have any problem viewing sharp objects both near and far. In normal-sighted eyes, the lens focuses the rays of light entering through the pupil just in such a way that they meet on the retina inside the eye. The lens itself is flexible up to a certain range and can thus compensate for smaller visual impairments as well as for different distances. If the lens can not afford this bundling of light on the retina, the receptors can only pass on a blurred image.