Separation of the two main layers of the retina (neuro-retina, retinal pigment epithelium) causes loss of function and impaired vision. Usually due to a tear or hole forming in the retina as a result of separation of the vitreous from the retina (posterior vitreous detachment), through which fluid passes lifting off and separating the layers. Occasionally due to fluid forming between the retinal layers due to inflammation or tumour or due to scar tissue pulling the layers apart. Risk factors include high levels of myopia, trauma to the eye, and pre-existing abnormalities in the peripheral retina.
Clinical Features
Often initial flashing lights or floaters
Painless reduction or loss of vision in one eye, often appearing as a shadow or curtain coming on within a few days of the initial flashes or floaters, though may be delayed
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