Mydriatic is a medicinal substance that causes dilation of the pupils. It is used in ophthalmology to facilitate fundus examination.
Dilation of the pupil (mydriasis) is achieved due to paralysis of the circular muscle of the iris, which is responsible for the narrowing of the pupil. As a result, the pupil dilates and the view of the deep structures of the eye improves.
The most commonly used mydriatic drugs are:
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Atropine has a long-lasting effect, the effect lasts up to 7 days.
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Cyclopentolate - acts from several hours to 1 day.
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Phenylephrine - causes short-term mydriasis (up to 2 hours).
In addition to diagnostic purposes, mydriatics are used to treat iridocyclitis, iritis and other inflammatory diseases of the eye. Pupil dilation reduces pain and improves blood circulation.
Thus, mydriatic agents are widely used in ophthalmology to facilitate the examination and treatment of eye pathology.
A mydriatic agent is a medicinal substance that causes dilation of the pupils. Mydriatics are used in ophthalmology to examine the eye, as well as to treat some of its inflammatory diseases, such as iritis or cyclitis.
The main mydriatic drugs include:
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Atropine is a potent mydriatic that blocks muscarinic receptors. Causes maximum pupil dilation and paralysis of accommodation. Used for the diagnosis and treatment of eye inflammation.
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Cyclopentolate is a mydriatic with predominantly peripheral action. Dilates the pupil and reduces the eye's reaction to light. Used in fundus examinations and for the treatment of uveitis.
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Phenylephrine is a vasoconstrictor and mydriatic agent. It has a moderate mydriatic effect due to stimulation of alpha-adrenergic receptors. Used in combination with other mydriatics.
Thus, mydriatic agents are widely used in ophthalmology to dilate the pupil to facilitate the diagnosis and treatment of eye diseases. The main drugs in this group are atropine, cyclopentolate and phenylephrine.
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From the editor. Due to the emerging threat of the spread of coronavirus, medical organizations in Russia are forced to limit the intake of patients. This means that if health problems arise, a trip to the clinic may be postponed indefinitely. However, many diseases cannot be delayed and require immediate assistance. For patients, this means that if their health worsens, the only option is to call a doctor. But sometimes it happens that the doctor prescribes treatment, and only after it should