Purpose: Examine the use of systemic phosphodiesterase inhibition (sildenafil) to clear central serous chorioretinopathy (CSCR). Observations: In a long-standing CSCR patient. sildenafil produced a rapid resolution. When discontinued (dechallenge) the CSCR returned. https://safeersappliancers.shop/product-category/leisure-range-cooker-cs100f520x-cuisinemaster-100cm-dual-fuel-3-ovens-lpg-conve/