Seeing spots in your vision? Doctors reveal what’s happening inside your eyes

You’ve probably seen them before, faint squiggles, dots, or thread-like shapes drifting lazily across your vision as you gaze at the sky or a bright wall. They never quite stay still, always slipping away when you try to look at them directly. For most people, these curious “floaters” are little more than an occasional distraction, but understanding what causes them, and when they might signal something more serious is worth a closer look. According to the NHS, these drifting shapes are known as floaters, and they’re usually caused by a harmless condition called posterior vitreous detachment (PVD), a natural change in the gel-like substance inside the eye as we age.They tend to appear more clearly against plain or bright backgrounds, such as a blue sky or light-coloured wall. Although most common in older adults, floaters can occur at any age. Floaters in your vision can look like small dark dots, squiggly lines, rings, or even cobweb-like shapes drifting across your sight.Royal Australian and New Zealand College of Ophthalmologists’ Dr Daniel Polya explained to Daily Mail Australia that floaters are formed from the condensation of the collagen fibrils in the vitreous humour. He explained that these collagen molecules start grouping together forming the dark blobs that we see as floaters.ndensation of the collagen fibres.In other words, what you’re seeing isn’t outside your eye at all, it’s inside, projected onto your field of vision by tiny fibres within the vitreous gel, the transparent, jelly-like substance that fills the eyeball behind the lens. For the most part, floaters are nothing to fret about. They can be a lifelong companion that simply fade into the background as your brain learns to ignore them. However, the NHS advises that in some cases, floaters may signal a more serious issue with the back of the eye, such as a retinal tear or detachment, which requires urgent medical attention. You should ask for an urgent optician’s appointment or contact NHS 111 if you experience any of the following: Any of these symptoms, according to the NHS, could indicate a problem with the retina, the thin, light-sensitive tissue at the back of the eye. A detached retina can lead to permanent vision loss if left untreated, so prompt action is crucial. Kyla Black, Director of Optical Practice at Boots Opticians, told the Daily Mail UK that while most cases are benign, new or sudden changes in vision should never be ignored. “Many people experience flashes or floaters at some point, especially as we get older. These are usually harmless,” Ms Black reassured. “Flashes can appear as arcs, sparkles or flickers of light at the edge of your vision which are not visible. But rarely, flashes and floaters can be caused by retinal tear or detachment.” According to Ms Black, retinal detachment affects about one in 10,000 people in the UK each year and is most common in those over 40. “If you experience them, as with any other new changes,” she added, “you should get it investigated.” Eye floaters are, in most cases, simply a by-product of the natural ageing process, more irritating than alarming. But as the NHS and experts emphasise, a sudden change in how you see them, or the appearance of flashes and shadows, warrants urgent attention. If in doubt, book an appointment with an optician. After all, it’s better to rule out the serious and rest easy knowing that those drifting dots are nothing more than harmless little ghosts in your vision.