Miodesopsies: floating spots that obstruct vision

Myodesopsias are small spots that appear in the vitreous humor of the eye, the appearance is similar to that of a fly. Although they cause vision difficulties, they are generally harmless, but sometimes they can indicate the presence of an eye condition.

They are one of the most common reasons for an ophthalmic doctor visit, although they are generally not dangerous. In this article, we will see an explanation of what is myodesopsia, what are the main causes and the most common treatments.

    The ocular system of humans

    Our eyes are made up of a very complex ocular system composed of an outer layer, a middle layer and an inner layer of cells, tissues and nerve endings responsible for carrying electrical signals to our brain.

    In turn, each layer is made up of other segments that have specific functions. The inner layer, for example, consists of three different chambers or sections; an anterior chamber between the cornea and the iris, a posterior chamber between the iris, the ciliary body and the lens; and a glass chamber, between Christianity and the retina.

    It is in the latter that it is found a gelatinous, colorless mass that we call vitreous humor or vitreous body, Which has a protective and damping function with which it is possible to maintain the shape of the eye and its internal pressure.

    What are myodesopsies?

    Myodesopsias are eye damage that causes spots, dots, or threads of different size and consistency in the vitreous humor of the eye, that is, in the gelatinous mass between the lens and the retina.

    In formal terms, myodesopsias are defined as an entopic phenomenon (that is, which originates and manifests itself inside the eye), caused by certain defects in the vitreous gel that reflect, absorb or diffuse the light through the eye. which interfere with their passage.

    On the other hand and in more familiar terms, myodesopsia are called “floating eyes” or “flying flies” because they are shaped like a spider’s web, a hair or a small dot, usually black or gray, which moves and floats in the eye.

    This is why some research recognizes cell-type myodesopsia or filament-type myodesopsia. Although they can obstruct vision and are one of the most common reasons for eye surgery, myodesopsia is not particularly harmful.

    They occur more frequently during aging due to significant changes in the cellular composition of the vitreous humor caused by the natural passage of time.

    However, if the number of myodesopsias suddenly increases and is accompanied by sparks of light, they could indicate the presence of a more serious pathology (such as retinal detachment), so it is important in one of these cases immediately consult a specialist.

    the main reasons

    Myodesopsias are the result of the accumulation of cellular defects in the vitreous humor, that is, they are mainly caused by changes in the cells that produce the gelatinous substance of the vitreous humor in the eyes.

    During aging, this substance becomes more liquid, so that the eye fibers and cells easily cluster together, generate spots or shadows on the retina which at first glance look like little flies.

    At other times, the presence of myodesopsia can be an indicator that the eyes are inflamed or injured, so they may be accompanied by internal bleeding which, in the worst case, leads to loss of vision.

    They may also appear as a result of posterior vitreous detachment, or due to eye trauma, eye surgery or as one of the effects of myopia.

      Most frequent treatments

      Usually, fly flies go away on their own after a few weeks, without causing significant discomfort. In other words, they do not require special treatment, and there is also no definitive medical treatment.

      However, and since they occur more frequently during aging, which in turn increases the likelihood of retinal detachment, it is advisable to go to the ophthalmologist whenever there is a sudden increase in spot size, peripheral shadow in the visual field, or sudden decrease in vision.

      From there, the treatments recommended by the specialist will be adapted to the pathology detected, which may include vitrectomy (surgery to remove the vitreous humor to replace it with saline solution). In the meantime, it is recommended that you do not chase away the spots with your gaze, as this can worsen the quality of vision.

      Bibliographical references:

      • Miodesopsias (2018). What are myodesopsies? Accessed March 4, 2018. Available at http://miodesopsias.com
      • Castella, M., Borja, C. and García-Arumí, J. (2016). Impact of myodesopsies on visual quality. Doctoral thesis, Autonomous University of Barcelona.
      • Ophthalmology clinic of the castle. (2013). Floating spots or flies. Accessed March 4, 2018.Available at http://www.oftalmologiacastillo.com/enfermedades/manchas-o-moscas-flotantes/
      • Puel, C. (S / A). Physiological optics. The optical system of the eye and binocular vision. Complutense University of Madrid [Versión Electrónica]. Accessed March 4, 2018. Available at http://eprints.sim.ucm.es/14823/1/Puell_Óptica_Fisiológica.pdf

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