Floating subjects
Floating subjects - deposits of the various size, the shape, a consistence, a refracting exponent, and mobility within usually transparent vitreous humour of an eye. They can have a germinal parentage or are got because of degenerate changes of vitreous humour or a retina. The perception of floating subjects is known as myodesopsia, or is more rare as myiodeopsia, myiodesopsia, or myodeopsia. When it is observed subjectively, floating subjects - entoptic the phenomena characterized similar shade by shapes which appear separately or together with several others in sight. They can appear as maculae, hairlines, or fragments of webs, float slowly before eyes. Symptom of "flying front sights" (Latin: ' at flight by flies), or begs volantes, specific type of the floating subject consisting of small maculae, which presence it is normal and it is assigned to the fine heels of germinal structures in vitreous humour.
Observation of floating subjects
Floating subjects often with readiness are observed by the doctor with ophthalmoscope or slit lamp use. However, if a floating subject - a small part of a debris, and about a retina they cannot be able observe it even if it seems major to the victim.
Augmentation of background illumination or pinhole use effectively to reduce diameter of a pupil presumes to gain to the person its best representation or its natural floating subjects. The head can be canted in such a way which of diversions of floating subjects to an eye axis of gravity. In the sharpening image fibrous devices are more appreciable. (If the pinhole is maintained, moving slowly in small circles, the same technics causes interesting effect entoptic, known as a vascular Drawing which is representation of blood vessels within a natural eye).
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