Retinal Detachment & Vitreoretinal Surgery
Separation of the neurosensory retina from the underlying retinal pigment epithelium (RPE), a critical surgical emergency requiring prompt repair to salvage vision.
Article Table of Contents
1. Comprehensive Overview
Retinal Detachment (RD) is the separation of the neurosensory retina (NSR) from the underlying Retinal Pigment Epithelium (RPE), depriving photoreceptors of oxygenated choroidal blood supply and leading to rapid, irreversible apoptotic photoreceptor death.
Etiological Types: 1. Rhegmatogenous Retinal Detachment (RRD): The most common form (>90%). Posterior Vitreous Detachment (PVD) produces tractional forces tearing the peripheral retina. Liquefied synchytic vitreous dissects through the retinal break into the subretinal space, elevating the retina. 2. Tractional Retinal Detachment (TRD): Proliferative vitreoretinal membranes contract and mechanically pull the neurosensory retina anteriorly (e.g., PDR, Proliferative Vitreoretinopathy - PVR). 3. Exudative / Serous Retinal Detachment: Fluid accumulation in the subretinal space without retinal breaks, secondary to choroidal tumors, Vogt-Koyanagi-Harada (VKH), or severe hypertension.
The Cardinal Warning Triad: Photopsia (light flashes) + Sudden dense shower of floaters + Expanding dark shadow/curtain across the visual field.
2. Symptoms & Warning Signs
If you observe any of the following symptoms repeatedly, an eye exam is strongly recommended:
- Photopsia: Bright flashes of light resembling camera flashes or lightning, exacerbated by eye movement or in dark rooms
- Sudden explosion or shower of dark floaters and cobwebs (vitreous hemorrhage / pigment release)
- Peripheral shadow or dark curtain progressively advancing toward central fixation
- Abrupt, severe drop in central visual acuity when the fovea detaches ('macula-off' RD)
- Metamorphopsia and distorted spatial vision
- Total absence of pain (the retina contains no nociceptive pain fibers)
3. Causes & Risk Factors
- 1Acute Posterior Vitreous Detachment (PVD) inducing dynamic vitreoretinal traction
- 2High axial myopia (> -6.00 D) associated with elongated globes and thinned peripheral retina
- 3Peripheral retinal degenerations (especially Lattice Degeneration and snail-track lesions)
- 4Direct blunt ocular trauma (e.g., racquetball, fist, airbag impact)
- 5Complicated proliferative diabetic vitreoretinopathy
- 6Prior cataract surgery (pseudophakia) or positive personal/family history in the fellow eye
4. Treatments & Medical Management
5. Prevention & Daily Eye Care Advice
- Immediate emergency dilated fundus exam within 24 hours of developing flashes or new floaters
- Regular annual peripheral retinal screening for high myopes with prophylactic barrier laser for lattice lesions
- Wearing protective polycarbonate eyewear during high-risk racquet sports and industrial tasks
- Avoiding head-jarring impact sports or bungee jumping in patients with known severe vitreoretinal thinning
6. When to Seek Emergency Eye Care
Visit an immediate eye emergency center if you experience any of the following critical indicators:
- ⚠New onset of light flashes (photopsia) or sudden shower of floaters
- ⚠Perception of a dark curtain, veil, or shadow falling over the field of vision (absolute surgical emergency)
- ⚠Sudden distortion or blackout of central vision
7. Frequently Asked Questions
Q:How urgently must retinal detachment surgery be performed?
Retinal detachment is a surgical emergency. If the macula is still attached ('macula-on'), surgery within 24–48 hours is imperative to save 20/20 vision. If the macula has detached ('macula-off'), urgent repair within days is necessary to maximize functional visual recovery.