Those who prefer to do without glasses and lenses during the day can opt for night lenses. They correct myopia while sleeping. Dr. Martin Loertscher reveals the advantages and disadvantages.
After the evening Brush teeth you quickly put the contact lenses on. Wrong world? No, night lenses are made for that. Instead of correcting the view during the day during sleep. In the morning you remove them – and see clearly again.
The mechanism is simple: “The night lens models the Corneaso that it is temporarily deformed and no further correction is necessary, ”says Dr. Martin Loertscher, optometrist at the Pallas Clinics. “However, the cornea returns to its original shape after about 24 hours. That means you have to put the lenses in every evening. “
The special lenses work best with myopia down to minus 6.50 diopters. “Astigmatism can also be corrected to a certain extent,” says Dr. Loertscher. «In principle it has to eye but be healthy with this Visual aid is working.” Because of the risk of bacterial inflammation, the hygienic measures must be strictly adhered to. This means cleaning the lenses every morning with the recommended cleaning agent and then placing them in the appropriate storage solution.
The adjustment of night lenses is more complex than that of day lenses. In addition, it should be carried out by a qualified optician who has sufficient qualifications in prescribing special contact lenses. The optician needs a keratographer for this: with this device, he can measure the surface of the eye with an accuracy of hundredths of a millimeter. The exact image of the eye shape is then transferred to the inside of the new lens.
The fear that night lenses will slip while you sleep is unfounded. “If adjusted correctly, they only shift slightly by 0.1 to 0.5 millimeters,” says Dr. Loertscher.
Well, already hooked? Are you going to give night lenses a chance?