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A detached retina is a serious medical emergency where the light-sensitive tissue at the back of the eye (the retina) pulls away from its underlying supportive layer. Since the retina requires constant blood supply from that layer, its detachment causes rapid, severe vision loss.
read more about detached retina ...The primary cause is the liquefaction and shrinking of the vitreous gel that fills the eye. As the gel shrinks, it pulls away from the retina, and if it is firmly attached to any area, it can create a tear (rhegma) in the retinal tissue.
Fluid then flows through this tear, lifting the retina off its bed. High myopia (nearsightedness), previous cataract surgery, and trauma are major risk factors that predispose the retina to tears and subsequent detachment.
Symptoms are sudden and severe. They begin with an acute onset of floaters (small spots or cobwebs) and flashes of light (photopsia), which indicate the vitreous gel is tugging on the retina.
This is followed by the appearance of a dark shadow or curtain in the peripheral visual field that moves centrally as the detachment progresses. Vision loss is progressive and worsens as the macula (central vision) detaches.
Diagnosis requires an urgent, extensive dilated eye exam. The doctor uses an indirect ophthalmoscope to visualize the retina and confirm the separation. The necessary treatment is emergency surgery, often involving methods like scleral buckling, pneumatic retinopexy, or vitrectomy, to reattach the tissue and seal the tears.
Immediate surgery is necessary because the detached tissue is deprived of oxygen and nutrients. If the retina, particularly the macula, remains detached for a prolonged period (more than a few days), the photoreceptor cells will die, resulting in permanent, irreversible loss of vision.
The main risk factors are high myopia (nearsightedness), which causes the eyeball to elongate and stretch the retina, previous cataract or other eye surgery, and blunt trauma to the head or eye.
No, the detachment itself is painless, but the visual symptoms (flashes and curtain) are sudden and alarming.
No, except for very small, peripheral tears that are treated with a laser, a retinal detachment requires surgical intervention.
If the detachment involves the macula and is left untreated, it can cause total, permanent blindness in the affected eye.
Seek emergency care if you see a sudden increase in floaters, flashes of light, or a dark shadow in your side vision. A detached retina is a medical emergency. Early surgery can often "tack" the retina back down and preserve your central vision before the macula peels off.
AAO. Retinal Detachment (aao.org). 2024.
Mayo Clinic. Retinal Detachment (mayoclinic.org). 2024.
Cleveland Clinic. Retinal Detachment Guide (clevelandclinic.org). 2024.
StatPearls. Retinal Detachment (ncbi.nlm.nih.gov). 2024.