Frequently Asked Questions


Made to measure, DRL® night lenses have been specifically designed to be worn at night and are made of a high permeability material which enables a good level of oxygenation for the eye.

No. These lenses are made to measure and perfectly respect the physiology of your cornea.
Of course it is imperative to strictly adhere to the hygiene rules (handwashing before inserting and removing, and daily care) which are necessary for safe wearing and renew your lenses every year. Studies have proved that there is less infection risk from wearing night lenses than from wearing day lenses.

Clear vision during the day will last for almost 16 hours. It is of course necessary to wear your lenses every night to maintain the same quality of vision every day, because when you stop treatment, the cornea returns to its original shape after 24 to 48 hours and vision deteriorates.

Yes. A satisfactory result can be achieved in one week for myopic patients, and in up to 15 days for hyperopic patients. This can vary from one wearer to another. In any case, you must follow your ophthalmologist’s advice.

No, care is not difficult but must be rigorous. You must follow your practitioner’s instructions and the recommendations for use.

Your specialist will recommend an oxidant as well as a weekly deproteinization procedure. Preservative-free, hyaluronic comfort drops are also essential for inserting and removing lenses.

No. The anatomy of the eye means that a lens, whether of the day or night type, cannot pass behind the eye, as the mucosa of the eye are effectively “connected” to the eye, which makes it impossible for a lens to slip behind the eye.

Yes. Progressive myopia in children is one of the first indications for wearing night lenses. Most often, they enable the progression of myopia to be slowed down.

Theoretically until (s)he is 18, at end of his/ her physical growth, but preferably until the end of his/ her studies.

It is possible to see halos as the effects of the treatment are progressive. These halos should progressively disappear. If they persist, tell your practitioner during a follow-up appointment: a readjustment of your lenses may be necessary.

If you experience redness of the eye, pain, or poor vision, you must remove your lenses and contact your practitioner.a

Remove the lens and rinse while finger massaging it to remove any residues or dust. If the discomfort persists, contact your specialist.

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