Most parents, having learned that their child's visual acuity is declining, follow the advice of doctors and buy glasses for their child. At the same time, adults want this optical device not only to help the offspring see better, but to be safe, reliable, and, if possible, fashionable. It is not difficult to take into account all these wishes when buying, if you remember a few rules.
Most often, ophthalmologists prescribe to young patients the constant wearing of glasses. This means that the main requirement for their frame is as little weight as possible. Anyone who at least once in his life has hoisted a structure of two glasses on his nose knows how annoying the pressure on the bridge of the nose is. This aspect is especially important for a child. Therefore, polycarbonate or trivex frames are considered the best for children today. Their specific gravity is less than that of ordinary water.
Plastic lenses are recommended even for adults these days, let alone children who can break glass and be injured by shrapnel. Therefore, only plastic lenses are inserted into children's glasses. You should not skimp on quality, because many manufacturers offer thin lenses with such a margin of safety that they are not afraid of a point-blank shot from a pistol. These glasses will easily withstand any children's adventures.
In order for the glasses to last a long time and at the same time be beneficial, and not harm vision, it is important to apply special coatings to the lenses. If an adult is able to keep the glasses clean, keep track of which surface they are on, etc., then children are unlikely to be so pedantic. Anti-reflective, dirt- and water-repellent and anti-static coatings are vital for their glasses. Otherwise, the lenses will fog up when entering from the street and quickly become covered with scratches and dust. It is also important to pay attention to the fact that the glasses have an aspherical design - this will expand the field of clear vision.
