Retinopathy of prematurity (ROP) is a rare eye condition. It occurs in infants who are premature or have low birthweight. ROP cause a problem in the retina, the tissue that lines the back of the eye. The blood vessels in the retina grow abnormally.

The abnormal blood vessels can lead to bleeding and scarring in the retina. In the most serious cases, ROP can lead to a separation of the retina from the back of the eye. In a small number of cases, ROP may cause vision loss or blindness.

Normal Anatomy of the Eye
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The exact cause of ROP is unknown.