Eye drops to strengthen the retina
Important: Vision is one of the five most important senses. Therefore, vision must be protected and ophthalmic diseases should not be left to chance.
Modern ophthalmology successfully copes with many eye diseases. And, as you know, there are more than a dozen of them. Let's list the most common ones.
Diseases that impair visual acuity:
- Myopia
- Farsightedness
- Astigmatism
Diseases that can lead to vision loss:
- Cataract
- Glaucoma
- Retinal dystrophy
A person's vision affects the quality of his life
Important: The retina is the inner sensitive layer of the eye that perceives light. The light is then converted into nerve impulses and sent to the brain. Essentially, the retina is the main “tool” that provides vision.
Retinal disease
Only an ophthalmologist can diagnose retinal disorders. In the initial stages, retinal pathologies do not manifest themselves in any way. Those who are at risk need to undergo diagnostics and make sure that everything is fine with the retina. Risk groups include:
- People suffering from myopia
- Patients with diabetes
- Aged people
Important: It is extremely dangerous to prescribe drops on your own to treat, restore or strengthen the retina. Entrust this matter to the ophthalmologist observing you.
For retinal dystrophy, an ophthalmologist may prescribe the following drops:
- Emoxipin
- Taufon
- Aktipol
For retinal angiopathy :
- Aisotin
- Solcoseryl
- Quinax
- Emoxipin
The best eye drops for conjunctivitis, blepharitis and keratitis
Unlike dry eyes and simple redness, these diseases are characterized by the development of an inflammatory process. If the ophthalmologist has diagnosed keratitis, blepharitis with damage to the soft tissues of the eyelids, or conjunctivitis of any form, then it is necessary to instill any drug from the list. It eliminates harmful microorganisms and makes it difficult for them to reproduce. Thus, the mucous membrane calms down, the redness goes away and the patient feels relief. Three drugs are effective for the above problems. They are characterized by accessibility and a high degree of safety for the patient’s vision.
Xalatamax
This is a high-quality drug with a high degree of digestibility and has an antiglaucoma effect. It is based on active ingredients such as benzalkonium chloride and sodium hydrogen phosphate. They instantly penetrate into the deep layers of the cornea and have an effect on it. These are reliable drops for conjunctivitis in adults with proven effectiveness.
Advantages
- High absorption rate;
- Long lasting effect;
- Can be used at any stage of the disease;
- Normalizes intraocular pressure;
- Affects the deep layers of the cornea.
Flaws
- It is not recommended to use the drug in children of the first year of life.
Consumer reviews indicate the high effectiveness of the drug. It is not recommended to use it without prior consultation with an ophthalmologist.
Hyphenation
Unpleasant sensations of dry eyes, diseases affect the quality of life. Hyphenate can be used to eliminate ophthalmic pathologies. These affordable eye drops coat the cornea and protect it from harmful effects.
The drug has a powerful regenerating effect. It restores epithelial layers in case of pathologies, erosion, and injuries. It is often used after surgery, treatment of conjunctivitis or corneal burns.
Advantages
- Affordable cost;
- Wide spectrum of action;
- Suitable for children from birth;
- High absorption rate;
- Quick pronounced effect from instillation.
Flaws
- Individual intolerance to components.
Clinical studies confirm that in terms of its chemical composition and mechanism of action on tissue, the product is similar to natural tears.
Tobradex
This is a drug with a combined effect that effectively fights bacteria and eliminates the cause of eye inflammation. It is effective for diseases of the organs of vision that are caused by viruses. Ophthalmologists prescribe a solution to eliminate inflammation of the eyelids and cornea, as well as various types of conjunctivitis.
Advantages
- Combined impact;
- Rapid onset of the desired result;
- Not addictive;
- Economical consumption.
Flaws
- Prohibited for children under 12 years of age.
This drug is recommended to be used with caution. Do not exceed the maximum daily dose to avoid swelling and burns of the cornea.
Taufon eye drops: how to use for visual impairment?
Taufon - transparent eye drops. The main active ingredient is taurine.
Taufon eye drops
Drops are used for retinal dystrophy, corneal injuries, cataracts, and as an additional treatment for open-angle glaucoma.
The drug has not been tested for safety when administered to children, so it is prescribed only to adults. Pregnancy is a contraindication for the use of Taufon drops.
Taufon: method of application
For farsightedness
Farsightedness that develops with age cannot be treated. But the development of such a disease can actually be prevented with the following list of eye drops to improve vision in farsightedness.
Taufon
These are the best eye drops for improving vision, a kind of additional nutrition for the eyes, synthesized on the basis of taurine. This is what this medicine does:
- Stimulation of damaged or obsolete parts of the eye apparatus (cornea, retina, muscle and nerve fibers);
- Preservation of eye cells from possible destruction by lipids. To put it simply, improving the prevention of cancer metabolism within the entire ocular system;
- Acceleration of fat digestion, accelerated production of vitamin complex A DE K. And all this in the intestines;
- During complex, long and attentive work with the eyes, it is the taufon that gives the vision additional nutrition, a kind of doping;
- Improved energy metabolism in the nervous system of the eyes. This contributes not only to visual acuity, but also to a general improvement of the body over time.
- Good metabolic process. Taufon normalizes glucose, which adds insulin in diabetes. As a result, appetite decreases and excess fluid disappears.
It is important to know! That when using these drops the dosage is strictly observed. An excess of the drug in the body will cause harm.
Bestoxol
Good drops for eyes for a narrow purpose. Write out if there is:
- Cataract. Radiation, age-related, acquired disease due to trauma, other origin;
- Dystrophic damage to the retina (age-related depletion);
- Inherited abiotrophy (degeneration);
- Open angle glaucoma;
- Corneal injuries, dystrophy.
It is important to pay attention to the negative consequences of use; the patient may experience:
- Swollen eyelids;
- Burning sensations;
- Redness of the white of the eye;
- Other manifestations of allergic reactions.
It is based on the same Taurine (which is found in Taufon drops). It turns out that Bestoxol is similar to drops with amino acids that stimulate the energetic, regenerative, healing process. This kind of drug is also prescribed for preventive purposes, but more often it is instead of exercise for the eyes, as well as for its dystrophy, disruption of the metabolic process in the eye joints.
Orlit
Ophthalmic tablets, eye drops to improve vision in case of farsightedness, helping to restore vision for a certain period of time. Suitable for the treatment of eye pathologies. Orlit based on:
- Blueberry fruits, which increase visual acuity by saturating the visual apparatus with vitamins and microelements;
- Luteolin flavonoid. Eliminates fatigue during intense visual stress, comprehensively promotes a beneficial effect on the eyes;
- Ginko biloba. Helps improve blood circulation and restore the capillary system in the eyes;
- Pine bark. It also has a positive effect on the circulatory system of the eyeball;
- Xanthophyll. Reliable protection from ultraviolet radiation, which prevents ophthalmic diseases caused by age-related changes.
For your information! This complex is considered natural, so it is allowed to be used even for preventive purposes for one month, 1 per 24 hours.
Vitamin eye drops to improve vision with decreased
Useful vitamins for eye health:
- Vitamins A and C
- Riboflavin
- Thiamine
- Pyridoxine
- Folic acid
- Niacin
Vitamin drops need to be instilled in courses, not on an ongoing basis. Vitamin drops help relieve eye fatigue, prevent dystrophy and cataracts, and improve visual acuity.
Vitamin eye drops include:
- Visiomax
- Okovit
- Myrtilene forte
- Quinax
- Oculist
- Riboflavin
What vitamin drops are there for the eyes?
Vasoconstrictor eye drops for redness due to eyestrain
Important: Vasoconstrictor drops are not recommended for use for longer than 3 days, as they are addictive.
The most popular vasoconstrictor drugs for the eyes:
- Visine
- Naphthyzin
- VizOptic
- Polinadim
Remember that red eyes are not only caused by eye strain. Often the cause of redness is ophthalmological diseases or seasonal allergies to flowering.
To avoid worsening your eye health, consult your doctor for an accurate diagnosis. Before examining the ophthalmologist, you can alleviate the condition with the help of vasoconstrictor drops.
Popular eye drops Vizin
Causes of visual impairment
Before restoring the visual organ, the cause of the disease should be found out.
Below are the most known causes of visual impairment:
- Dry eyes occur due to the fact that a person blinks less often. Blinking helps the surface of the eye organ to clean and moisturize. This happens when a person focuses his gaze on a certain place for a long time. For example, on a TV or computer. Due to lack of hydration, the eyes become very tired. Dryness irritates them, and there is a risk of developing infection. As a result, vision decreases.
- Severe eye fatigue. The retina of the eye organ is negatively reflected by the harsh light hitting it and insufficient lighting. Reading for a long time in poor lighting causes eye strain.
- Impaired blood flow. The retina of the eye plays an important role, but it is sensitive and delicate. The functioning of the retina is completely dependent on blood circulation, so if it is impaired, vision deteriorates.
- Poor food system. If a person does not consume the necessary macro- and microelements with food, then some processes in the eyes are disrupted and vision becomes weaker.
- Changes in the fundus with age. A person's metabolism becomes slow and tissues are poorly restored. The eyes contain the pigment with which a person sees. With age, this pigment performs its functions poorly and vision declines.
Eye drops to improve vision are solutions of special substances that are injected into the eyes. To release droplets, aqueous and oily solutions of various active substances are used. All products for the eye organ are sterile, so they do not irritate the mucous membrane and are used to treat various diseases.
Anti-fatigue eye drops to improve vision
The eyes of a modern person are subject to stress every day. This is facilitated by working at the computer and active use of gadgets. Contact lenses also contribute to eye fatigue. In ophthalmology, there is such a concept as “dry eye syndrome,” when discomfort, dryness, and burning appear in the eyes in the evening. In this case, it is worth purchasing moisturizing eye drops. For example:
- Stillavit
- Cationorm
- View-Chest of drawers
- Optiv
- Natural tear
Eye drops for fatigue create a membrane that moisturizes the eyeball. Attention should be paid to the choice of drops when wearing contact lenses. Some medications can be instilled without removing the lenses. Others - only after removal.
Important: Many people mistakenly consider Visin to be drops for eye fatigue. Classic Visine is a vasoconstrictor drug that cannot be used continuously. Moisturizing drops to relieve fatigue and dryness are Visine pure tears.
Stillavit is one of the drugs for eye fatigue
How do drops affect our eyes?
Drops for improving visual acuity are conventionally divided into three categories based on the method of exposure. The first includes products that promote muscle relaxation during sleep. They are relevant for those who spend a lot of time at the computer or doing paperwork, and therefore their eyes experience increased strain. Most of these drugs are harmless and can be used for preventive purposes.
The second category is drugs for artificial relaxation, which include atropine. Thanks to their influence, a person begins to see better up close, which is important for people suffering from myopia.
The third category includes antioxidant drops that transport nutrients to the retina, thereby improving its condition and function.
Eye drops to improve vision with cataracts
With cataracts, clouding occurs in the lens, which itself is transparent. A person with cataracts sees as if through a veil. This disease develops in most cases in older people, but sometimes it occurs due to injuries and can be congenital.
Important: The only way to treat cataracts is surgery. Cataracts cannot be cured with eye drops. Eye drops will only help slow down the process of cataract development.
To prevent complications after cataract surgery, the following drops are prescribed:
- Diclofenac
- Nevanak
- Broxinac
The following medications are used to slow the development of cataracts:
- Catalin
- Quinax
- Oftan Katahrom
- Catarax
Cataracts in an elderly person
NEW! Our recommendations!
We invite you to pay attention to the drops, which occupy not the last place on the market due to their beneficial qualities.
Below are our recommendations:
- To improve vision.
- To restore vision.
- To maintain vision.
- For farsightedness.
- For short-sightedness.
for eyes
To improve vision
Besides the Activision presented above, another good eye drop for improving vision is Visomitin. The drug is recommended not only to get rid of tired eyes and computer syndrome, but in situations where there is an age-related manifestation of cataracts.
- Relieves dryness and blurred vision.
- Moisturizes the cornea.
- A slight burning sensation during the initial stages of use.
Contraindications:
- individual intolerance to components;
- age under 18 years.
The average price for Visomitin is 495 rubles.
Visomitin helps me a lot. Relieves eye tension and fatigue. This makes my head hurt less. I drip in the morning and evening, sometimes throughout the day. I'm happy with the result. Very effective drops
To restore vision
There are many different types of drops that help restore vision. , Oftan Katahrom drops occupy not the least place . Drops are prescribed to patients with cataracts. The substances contained in the drug nourish the lens of the eye and improve the regeneration of the cornea.
- Helps with age-related or diabetic cataracts.
- Moisturizes the ocular surface.
- Causes a short-term burning sensation when instilled.
Contraindications include individual intolerance to the components and pregnancy.
The price of eye drops varies around 348 rubles.
Excellent drops. Problems with dry eyes and loss of focus are gone. Nourishes the lens and helps restore the cornea. Vision correction is visible. I am pleased
Video review of eye drops for cataracts.
To maintain vision
Kuspavit drops is to protect the eyes and maintain their health. The drug contains vitamins and minerals. Drops relieve inflammation of the cornea, protect the eyes from harmful radicals and relieve signs of age-related farsightedness.
- Relieves redness of the eyes.
- Restores lacrimation.
- Removes dryness.
- No.
Contraindication is individual intolerance to the substances included in the drug.
vitamins for eyes
The cost of Kuspavit drops is from 670 rubles.
The ophthalmologist prescribed Kuspavil for prevention. The feeling of tired eyes has gone away, I no longer strain them when reading. There was a problem - my eyes watered in strong winds. Now I don’t even remember about it
Video about the need for eye protection.
For farsightedness
Vita-Iodurol is a Swiss eye drop widely recommended for farsightedness. The drug improves trophism of the lens, normalizes eye blood supply and metabolism.
- Relieves irritation of the cornea of the eye.
- Relieves fatigue.
- Improves vision.
- No.
Contraindicated in case of hypersensitivity to the components of the drops.
The cost of Vita-Iodurol is 342 rubles.
There was a constant problem of “dry eye” due to working at the computer. A friend recommended Vita-Iodurol. I’ve tried different types of drops before, but these work great. By the end of the day, the eyes do not hurt, there is no dryness or burning. Drops perfectly relieve tension
For myopia
The top positions among drops for myopia are occupied by American Quinax drops. They prevent the risk of developing cataracts and improve the ability to absorb protein.
- Improves eye metabolism.
- Moisturizes the eyes.
- Effective for cataracts.
- Short shelf life after opening the bottle.
Contraindications: hypersensitivity to the components of the drug.
The cost of Quinax is within a radius of 639 rubles.
Drops were prescribed in combination with other vitamins to strengthen the retina. After completing the first course of use, facial vision improved: the veil disappeared from the eyes, the clouding of the lens disappeared. The disadvantage of drops is their large volume and short shelf life. I had to throw away the drops after using half the bottle.
Video about drops that improve eye blood vessels.
Eye drops after laser correction: list
Important: Drops after laser correction can only be prescribed by a supervising doctor. You can replace the drug with an analogue only after consulting a doctor. The duration of use of the drops is also determined by the doctor.
After laser correction, two types of drops are prescribed:
- Anti-inflammatory
- Moisturizing
Anti-inflammatory drops , list:
- Tobradex
- Dexamethasone
- Maxitrol
- Maxidex
- Oftan Dexamethasone
Moisturizing drops , list:
- Systane
- Oksial
- Hilo-Chest
- Oftagel
Anti-inflammatory drops Tobradex
Eye drops to improve vision Oftan Katahrom: how to use for visual impairment?
- Oftan Katahrom drops are indicated for cataracts. The drug stimulates metabolism in the tissues of the lens and has an antioxidant effect.
- The drug should be instilled 2-3 drops 3-4 times a day for no longer than 15 days. An open bottle can be stored for 1 month.
- Contraindications: age under 18 years, breastfeeding and pregnancy.
Important: Before using Oftan Katachrom drops, you must remove your contact lenses. After instillation, do not wear lenses for at least 15 minutes.
Oftan Katahrom for the treatment of cataracts
Rating of the best eye drops: TOP 7 list, reviews
In order not to get confused in the extensive selection and understand which eye drops to improve vision are worthy, we present a list of the best and most popular eye drops:
- Activision.
- Reticulin.
- Ophthalmix.
- Orlit.
- Irifrin.
- Zorro.
- Taufon.
Activision
These drops to improve vision were developed in Israel and today occupy one of the leading positions in the eye drops market. The drug is a vitamin-mineral complex with carotenoids. Aktivizhn is prescribed by ophthalmologists for the treatment and prevention of a wide range of diseases.
- Moisturizes the eyes.
- Restores clarity of vision.
- Relieves eye strain.
- Stabilizes eye pressure.
- No.
The only contraindication for Activision is individual intolerance to the components.
The cost of the drops is 990 rubles.
eye drops
I work at the computer for 10-11 hours, my eyes get very tired and dry. The ophthalmologist prescribed Activision. Just five days after starting the course I felt a difference. Visual acuity returned, the blur went away, and the spots in front of my eyes disappeared. I’m very pleased with the safety of the drops, the composition is all natural, there are no side effects
Activision drops
Video: Activision - a complex for vision restoration.
Reticulin
Reticulin eye drops are prescribed to prevent chronic conjunctivitis and relieve accommodation syndrome. The drug is also prescribed for the treatment of early stages of age-related cataracts. The drops contain extracts of plant herbs collected according to the teachings of Ayurveda.
- Relieves eye fatigue.
- Improves vision clarity.
- Moisturizes the cornea.
- There is a possibility of allergic reactions.
Contraindications to the use of Reticulin: intolerance to one or all components of the drug.
The average price for Reticulin in pharmacies is 1050 rubles .
The ophthalmologist insisted on purchasing Reticulin, as it helps with dry eyes and early cataracts. Sometimes used for conjunctival prophylaxis. The burning sensation in the eyes did indeed disappear, although not immediately. My eyes no longer hurt in the sun, the tension is gone. The price of the drops is high.
Reticulin drops
Ophthalmix
Ophthalmix is a complex eye preparation. Contains vitamins, blueberry extract and beneficial minerals. Prescribed by ophthalmologists for increased stress on the organs of vision, dryness and fatigue of the eyes.
- Eliminates corneal dryness.
- Relieves the feeling of eye fatigue.
- Doesn't sting when used.
- Does not relieve red eyes.
The drug is contraindicated:
- with hypovitaminosis;
- excessive amounts of minerals in the body;
- hypersensitivity to the components of the ophthalmix;
- children under 14 years of age.
The price for Oftalmix starts from 135 rubles per 10-milliliter bottle.
For those who wear lenses, this is an excellent choice. I spent a long time looking for suitable drops, since my eyes dry out especially badly under lenses. The last time I bought lenses, I noticed that the optician uses Ofthalmix. I decided to try it. The drops relieve dryness and pleasantly envelop the eyes. The bottle lasts for a month with regular use. The price of the drops is reasonable
Video about the correct use of lenses.
Ophthalmix drops
Orlit
The Orlit vision improvement complex is the latest development of domestic manufacturers. The drug contains vitamins, minerals, blueberry extracts, pine bark and ginkgo biloba.
- Removes the feeling of “sand” in the eyes.
- Lowers intraocular pressure.
- Relieves redness of the cornea.
- No.
Contraindications: individual intolerance to the components.
The cost of Orlit varies from 878 rubles.
Due to the large amount of work, I get very tired, in the evening I have a headache, and everything floats before my eyes. I tried the Orlit complex, it felt better. The spasms go away, and the eyes stop being red and irritated.
Orlit drops
Irifrin
Irifrin eye drops are prescribed by doctors for accommodation syndrome or inflammatory processes of the iris and ciliary body of the eyeball. The active components of the drops are phenylephrine hydrochloride.
- Lowers intraocular pressure.
- Relieves the feeling of fatigue.
- Relieves false myopia.
- Lots of possible side effects.
- Burning in the eyes when instilling drops.
The price for Irifrin ranges from 500 to 1000 rubles.
Drops are contraindicated for people with:
- hypersensitivity;
- liver problems;
- aortic aneurysm;
- Individual intolerance to components.
Vision began to deteriorate, there was a feeling of fog in the eyes, and it became difficult to see into the distance. Irifrin was prescribed, and after two weeks the feeling of constant eye strain disappeared. I stopped squinting all the time, trying to make out the bus number or the name on the sign.
Video: Irifrin - instructions for use.
Irifrin drops
Zorro
Zorro eye drops perform different tasks and are prescribed for dry eyes, to relieve computer syndrome and to prevent vision loss due to heavy workload.
- Moisturize.
- Relieves eye fatigue.
- No.
Zorro has the only contraindication - intolerance to the components of the drug.
The cost of drops varies from 660 to 950 rubles .
They gave me the drops. In general, a good effect, the eyes are well moisturized, the burning sensation goes away. It is better to use them together with eye gymnastics, then the effect of improving vision will be better.
Zorro drops
Taufon
Taufon is the most versatile remedy on the market for those who suffer from lens opacities or retinal dystrophy. The active component of the drops is taurine. This amino acid has a healing and regenerating effect; in addition, it perfectly relieves the feeling of fatigue in the eyes. Taufon is often prescribed in combination with Irifrin.
- Relieves eye strain.
- Improves the condition of blood vessels.
- The effect of use is not immediately visible.
- It stings the eyes when instilled.
Contraindications for use include:
- taurine intolerance;
- pregnancy;
- age up to 18 years.
The price for Taufon is from 130 rubles.
lenses
I have very poor eyesight, so I constantly use drops as supplements. Taufon was prescribed to me to restore the retina and improve vision in general. If the drops are used correctly, vision improves by half a diopter within 10 days of use. True, each procedure takes an hour. Nevertheless, I’m happy with the drops and won’t give them up. A slight burning sensation during instillation is not so bad, but the result is good
Taufon drops
Watch a video about Taufon eye drops.
Irifrin eye drops: how to use for visual impairment?
Irifin is an eye drop that helps dilate the pupil.
Drops are used in vision diagnostics, before surgery, and in the treatment of iridocyclitis.
It is worth knowing that sometimes side effects occur, such as burning eyes, tearing, increased blood pressure.
Important: Irifin drops are contraindicated for elderly people.
This is what Irifin eye drops look like
Age-related vitamin eye drops for the elderly
Important: With age, 99% of people experience visual impairment. Elderly people often suffer from retinal dystrophy, senile cataracts, and glaucoma. Prevention will help prevent or delay ophthalmic diseases.
Eye drops for the elderly:
- Taufon
- Catarax
- Quinax
- Riboflavin
Older people need to keep their eyes healthy
Why do older people and children's eyesight deteriorate?
Middle-aged and retired people have problems with the eye system due to its aging. With age, the eyes lose elasticity, which affects sharpness and causes periodic pain when the environment changes.
If a person has a predisposition to myopia, then this disease will progress over the years. The situation is similar with farsightedness. This can be corrected with contact lenses and glasses. But in order to maintain the visual system during age-related changes in vision, it is advisable to reduce the load on it for the whole working day. And the best way to do this is with the right vitamin complex in the form of drops.
Eye drops to improve vision for children and adolescents: list
Important: A child does not need to take drops to prevent vision without a doctor’s prescription.
Most eye drops have a general contraindication - children's age. To prevent vision, it is better to use a multivitamin complex.
If a child has an eye infection, the doctor may prescribe the following medications:
- Sulfacyl sodium
- Levomycetin
- Phloxal
- Albucid
The dosage and period of use are prescribed purely individually.
At the end, I would like to add a few words about the hygiene of using eye drops. It is unacceptable to use other people’s drops, just as you should not give your own drops to other people. Wash your hands thoroughly before instillation. It is advisable to instill heated drops, since cold ones are much less absorbed. To warm up, simply lower the bottle into a glass of warm water for a few seconds.
The most effective drops for restoring vision in myopia
When a patient has a mild form of myopia, specialists often prescribe the drug Taufon. It contains taurine, which has a regenerative function. With its use, improvements are observed due to the acceleration of metabolic processes and the supply of the optimal amount of oxygen for the proper functioning of the visual system. No less popular are Emoxipin drops with an active synthetic antioxidant. Treatment with this drug occurs due to improved blood circulation, resorption of small hemorrhages and protection of the retina from negative external environmental factors. The drug for improving vision “Irifrin” is also highly effective. It promotes pupil dilation, outflow of intraocular fluid and vasoconstriction. However, the drug has contraindications. For example, it cannot be used for diseases of the thyroid gland and cardiovascular system. That is why you should consult an ophthalmologist to find out the permissible frequency and dosage of its use.
Experts also recommend “Ujala” drops for the treatment of myopia. This is an Ayurvedic medicine that relieves fatigue and eye strain. It is enriched with active ingredients such as potassium nitrate and Boerhavia diffuse extract. The first has an antimicrobial and analgesic effect. The second reduces eye strain, which accompanies lacrimation with uncomfortable sensations, and also stimulates nutrition and metabolic processes at the cellular level. The drug does not contain harmful chemical components, so it can be used even by patients with hypersensitive organs of vision.