Summary of Retinal Breaks and Detachments
Retinal Breaks and Detachments: Causes, Types, and Treatment
Introduction
Peripheral retinal disorders encompass a variety of degenerative, congenital, and acquired lesions located between the retinal equator and the ora serrata. These lesions are important to recognize because some are benign and require only observation, while others increase risk for vision-threatening complications or indicate systemic/inherited disease. This guide focuses on describing common peripheral lesions, their clinical features, investigation, and management principles (excluding topics covered elsewhere: retinal breaks, posterior vitreous detachment, rhegmatogenous retinal detachment, exudative retinal detachment, and retinoschisis/serous macular detachment).
Definition: Peripheral retinal disorders are structural or pigmentary changes in the retina anterior to the equator, often discovered on peripheral retinal examination with indirect ophthalmoscopy and scleral depression.
How to approach peripheral retinal lesions
- Take a careful history: symptoms (flashes, floaters, peripheral field defects), refractive error (myopia), trauma, family history, systemic or inherited disease.
- Use binocular indirect ophthalmoscopy with scleral depression for full peripheral view.
- Supplement with widefield imaging, OCT for peripheral lesions when available, and targeted ancillary tests (FA, ERG) for suspected inherited disease.
Classification (overview)
- Rhegmatogenous-type degenerations (not covered: break/retinal detachment topics are excluded)
- Non-rhegmatogenous peripheral degenerations (covered here): peripheral drusen, pavingstone (cobblestone) degeneration, reticular/honeycomb pigmentary degeneration, microcystoid degeneration, dark without pressure, white-without-pressure, snowflake degeneration, meridional folds, vitreoretinal tufts, lattice/snail-track variants (descriptive features only)
White Without Pressure (WWoP)
Clinical features
- Appears as a pale, translucent white area of peripheral retina, often extending from mid-periphery to the far periphery.
- Can be unilateral or bilateral and vary in size.
- May appear with or without a red demarcation line at its posterior border.
Definition: White Without Pressure is a peripheral whitening of the retina seen on indirect ophthalmoscopy that is not due to scleral depression and is related to changes at the vitreoretinal interface.
Key examination points
- Inspect posterior border carefully for a red demarcation line; presence suggests chronicity and a sharp posterior margin.
- Look for interruptions, tufts, or localized vitreoretinal traction at the vitreoretinal face.
- OCT (when feasible at the periphery) may show outer retinal/EZ changes and increased reflectivity in affected areas.
Clinical significance and management
- WWoP is common and usually benign. It can be mistaken for other white peripheral lesions; differentiate by absence of scleral-depression-induced whitening and by vitreoretinal interface appearance.
- Monitor with routine dilated exams; document size and posterior border. No treatment unless associated complications arise.
Dark Without Pressure (DWoP)
Clinical features
- Appears as dark brown to reddish areas in the mid-periphery to far periphery.
- Often corresponds to regions of increased pigment density or altered reflectivity in photoreceptor/chorioretinal layers.
Definition: Dark Without Pressure is a peripheral pigmentary change that looks darker than surrounding retina on indirect ophthalmoscopy and is not induced by scleral depression.
Investigations and significance
- OCT shows decreased reflectance in the ellipsoid zone/photoreceptor layers in some cases; there is t
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Peripheral Retinal Disorders
Klíčové pojmy: Peripheral lesions lie anterior to the equator and require scleral depression for full assessment, White Without Pressure appears pale and may have a red demarcation line at the posterior border, Dark Without Pressure is pigment-related, shows decreased EZ reflectivity on OCT, and is usually benign, Pavingstone degeneration are peripheral chorioretinal atrophic patches that need observation only, Reticular/honeycomb peripheral pigmentary change is age-related and typically benign, Snowflake crystalline degeneration is rare, often bilateral, and may be associated with vitreoretinal traction, Meridional folds and vitreoretinal tufts occur in the far periphery and are more common in high myopia; inspect carefully, Lattice/snail-track changes progress from pale atrophic to pigmented lesions and should be documented for extent, High myopia increases peripheral degenerations and warrants careful peripheral exams and documentation, Peripheral drusen are distinct from macular drusen and do not necessarily indicate macular AMD, X-linked juvenile peripheral schisis shows inner-layer elevation and vascular changes; provide genetic counselling and monitor, Escalate to retinal specialist for atypical, progressive, or symptomatic peripheral lesions