Night lenses to restore vision
Many have heard about day lenses, but no night lenses. This is a new word in vision correction. The method is especially effective for children, as well as in the initial and secondary stages of myopia. The lenses are worn before bedtime, at night they affect the cornea imperceptibly for a sleeping person, bringing visual acuity back to normal. In the morning, the lenses are removed, and the effect of their night work lasts 24 hours.
What is orthokeratology?
Orthokeratology (the use of night lenses) is a relatively new method of improving vision in children and adults without surgical intervention, using night lenses. It consists in the selection and wearing of special lenses at night. The effect is achieved due to the influence of a special profile of a night contact lens on the curvature of the cornea during a person’s sleep. After removing night lenses, the effect lasts up to 24 hours without additional correction.
Highly qualified, qualified ophthalmologists, after a detailed preliminary examination of both eyes of the patient, are engaged in the selection of night lenses for restoring vision in the Eye Clinic of Dr. Belikova. The basis of the action of night lenses is the effect on the anterior layer of corneal epithelial cells of the hydrodynamic forces arising in the lacrimal layer under the lens. Under the influence of the created pressure, the center of the cornea becomes flatter, and on the periphery of the cell, on the contrary, increase its size.
This form lasts all day. The effect obtained is comparable to the effect of laser correction, but is completely reversible. Regular use of orthokeratological lenses at night prevents the cornea from returning to its original state, which makes its artificially created form constant for the period of use of the lenses.
How do night lenses work?
Night lenses are successfully used for:
- Myopia (myopia)
- Astigmatism (unevenness of the cornea)
- Hypermetropia (hyperopia)
- Progressive myopia (myopia) in children and adolescents.
Night lenses are a real achievement of modern ophthalmology. Here are just a few interesting and, most importantly, scientifically proven facts about night lenses for restoring vision:
- The greatest effect of vision correction (up to 75%) is usually achieved after the first night a person spent in night lenses (with a low degree of myopia)
- Full correction vision is usually achieved no later than after 7-10 days of using night lenses.
- During the day when the night lens is not worn, a slight regression of the effect can be observed.
- The final stabilization of the effect occurs 1 to 2 months after the start la regular use of night lenses to maintain full correction lens must be worn night every night.
The history of the emergence of orthokeratology and the appearance of corrective night lenses
The first developments date back to the middle of the last century. The term "orthokeratology" itself belongs to the scientist Newton Wesley. The palm was held for a long time by scientists from the United States. The American ophthalmologist Richard Wlodig in the late 80s of XX century was the first to develop an orthokeratological lens of the so-called inverse geometry, in which the center was flatter than the periphery.
Orthokeratology came to our country later than laser vision correction, namely in the early 2000s. Only a large professional clinic can afford to carry out keratotopography and other studies that precede the selection of night lenses (which is a priori more difficult and more expensive than the selection of ordinary soft contact lenses).
Perhaps that is why the method has not yet become widespread with all the attractiveness and, most importantly, ease in achieving results.
Dr. Belikova's eye clinic has been engaged in orthokeratological treatment for more than 5 years. In our clinic, an ophthalmologist will pick you night lenses that will help restore visual acuity. The feedback from our numerous patients proves that the use of night lenses does not affect the quality of sleep.
Safety of wearing night lenses
Orthokeratologic therapy with night lenses is recognized as a safe procedure worldwide. With well-chosen night lenses, you can only fear that the patient does not follow the rules for using night lenses and caring for them, which hypothetically can lead to infectious complications. The only possible serious complication of contact correction with night lenses is microbial keratitis.
It should be noted that the incidence of microbial keratitis is not more than 0.04-0.09% of cases per year. A professional selection of night lenses by an ophthalmologist is required, as well as careful monitoring of the patient's compliance with all medical appointments and instructions.
The only possible serious complication of contact correction with night lenses is microbial keratitis. It should be noted that the incidence of microbial keratitis is not more than 0.04-0.09% of cases per year. A professional selection of night lenses by an ophthalmologist is required, as well as careful monitoring of the patient's compliance with all medical appointments and instructions. This is the key to the safety and effectiveness of the regular use of night lenses as part of orthokeratological therapy.
Indications for the use of night lenses
The most preferred orthokeratological lenses for correction are myopia up to -6 diopters and astigmatism up to -1.75 diopters. In practice, there are examples of effectiveness with higher degrees of myopia, and for the correction of astigmatism more than 2.0 diopters there is a special toric design of night lenses.
Also, special lens models can correct hyperopia up to +4.0 diopters. The quality of vision in patients using this method is sufficient to perform everyday tasks (driving a car, working at a computer, playing sports, including water sports) without the help of additional correction tools.
Contraindications for wearing night lenses
Absolute contraindications that do not allow the use of orthokeratological (night) lenses are as follows:
- Any inflammatory diseases of the anterior segment of the eye and eyelids
- Severe dry eye syndrome
- Keratoconus, keratoglobus, pellicidal marginal degeneration
- Severe nystagmus (involuntary, frequent and frequent eyeballs) making selection of night lenses impossible
- Expressed lagophthalmos - the impossibility of completely closing the eyelids.
Relative contraindications to the use of night lenses, which require an individual approach in each case:
- Wide pupil
- Endocrine diseases
- Children under 6 years of age
- Pregnancy and lactation
The advantages of night lenses
- Good vision all day without glasses and contact lenses
- There are no risks associated with surgical intervention
- The reversibility of the orthokeratology method. If you do not want to use night lenses anymore, after a few months the cornea will return to its original state, as before the correction
- Effective vision correction at any age, especially young and children
- The night regime of wearing orthokeratological night lenses takes into account the physiological rhythms of the eye, in particular, the normal breathing corneas with maximum oxygen consumption during the day
- Night contact lenses allow you to forget about professional restrictions, make it possible to work in dusty, smokey conditions and and aerosols (firemen, builders, hairdressers, bartenders, police officers and many others).
- Freedom of Occupation sports and active leisure activities. This correction method is shown to those who are engaged in water sports and diving, as well as where dust can get into the eyes (football, auto racing, cycling, horse racing, etc.). Glasses and ordinary contact lenses in these situations is a big problem, but the use of night lenses, according to patients, is a real salvation.
It has been proven that the use of night lenses is an effective method that significantly inhibits the progression of myopia, especially in children and adolescents.
In addition, night-wearing lenses return good vision, in children, and especially in adolescents, self-esteem increases. The ability to engage in any sports without any visual impairment also gives the child confidence. Parents do not need to worry that the child will break glasses or lose contact lenses: the child removes night lenses in the morning after sleep and leaves them at home.
With progressive myopia in a child, do not waste time contacting ophthalmologists, because just one visit to a doctor with a competent selection of night lenses can solve many problems in the present and prevent future complications. The reviews of many parents of young patients of our clinic indicate that night lenses have become a real panacea for the deterioration of vision in their children. Having quickly learned to put on night lenses before going to bed and take them off in the morning, the child feels no worse than his peers, and his vision returns to normal.
Selection of night contact lenses
The price of night lenses in the Eye Clinic of Dr. Belikova in Moscow is available to the general public. This is a fundamental approach to pricing. We believe that such a modern method as orthokeratology should become more accessible to our adult and young patients, and therefore we offer lenses of the highest quality and at the best cost. How to choose night lenses – our doctors will tell you.
What is the country of origin of night lenses?
Ortholenses were developed by an Italian designer. They are produced on American equipment using American supplies. The production is located in Russia, so that our patients do not suffer from long logistics from America.