If you wear eyeglasses , there is a good chance that you have sight problems . Myopia, presbyopia, astigmatism, hyperopia are all disorders that affect our vision and can affect our everyday life.
Since you are suffering from problems with vision , it is important to consult a specialist, then an optician will make sure to find glasses to your face !

However, you might hear terms you don't understand or are just unfamiliar with. We will therefore explain to you in this blog article, what are the different disorders of the vision, their origins but also how your optician will design your glass to solve these sight problems!

explication des différents problèmes de vue avec schémas


Myopia :

If you have a myopic eye , your focal point is in front of your retina. As a result, your distance vision is blurry.

To restore the sharpness of your sight, we use eyeglasses simple vision in which the single vision lenses, concave in shape, are divergent. They allow the "image" to be repositioned on the retina.


Presbyopia is a natural visual impairment. It is linked to the aging of the eye. the crystalline gradually loses flexibility and is no longer able to bulge out enough to make a sharp image. Your near vision therefore becomes blurred .

This aging process, which actually begins at an early age, is generally seen around 40/45 years old. From this moment, until around 60 years of age, presbyopia progresses rapidly, which requires regular eye control for effective adaptation of the visual correction.

There are several solutions to correct presbyopia: progressive lenses , proximity glasses, or single vision lenses.


The astigmatic eye does not allow all light rays to focus at the same point on the retina. The image is then formed in two distinct places, which results in an imprecise vision from near and far.

This visual defect is usually due to an irregularity of the cornea , whose curvature is slightly oval instead of round.
To correct this problem, single vision glasses with toric lenses are used, the curvature of which compensates for that of the retina.


The hyperopic eye, unlike myopia, has difficulty seeing sharply up close because the focal point is behind the retina . He must constantly adapt to move the focal point forward. The image becomes blurry when the eye reaches the limit of its accommodation capacity.

To correct this visual disturbance , converging, convex-shaped single vision lenses are used to place the image in the right place on the retina.


To adopt the different types of glasses, Gravity offers you awide selection of3d printed glasses to be able to see clearly and with style!