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3&9’0 clock staining is the symptoms of what condition when patient is the existing user of RGP lenses
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A common complication with corneal GP lenses is 3 and 9 o’clock staining, which is a result of epithelial punctate staining of the peripheral cornea near the edge of the GP lens. These so-called 3 and 9 o’clock areas may not be adequately resurfaced with tears after a blink, thus resulting in small desiccated regions.
B- because of the bridge theory