Retinopathy of prematurity- true is –
**Core Concept**
Retinopathy of prematurity (ROP) is a disease of the eye affecting prematurely born babies. It is characterized by abnormal blood vessel growth in the retina, which can lead to retinal detachment and vision loss. ROP is a common cause of childhood blindness in developed countries.
**Why the Correct Answer is Right**
ROP is more common in preterm infants with lower birth weights. This is because the retinal vessels in preterm infants are not fully developed, and the retina is highly susceptible to hypoxia. The pathogenesis of ROP involves a complex interplay between retinal vascular growth and the response to hypoxia. The retinal vessels initially regress, followed by an abnormal revascularization process that can lead to the formation of fragile and non-perfusion areas in the retina.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because ROP is not caused by maternal diabetes. While maternal diabetes can increase the risk of ROP, it is not a direct cause.
**Option B:** This option is incorrect because ROP is not typically associated with systemic hypertension. While systemic hypertension can have various ocular complications, it is not directly linked to the development of ROP.
**Option C:** This option is incorrect because ROP is not caused by an inherited genetic disorder. While genetic factors may play a role in the susceptibility to ROP, it is not an inherited disease.
**Clinical Pearl / High-Yield Fact**
ROP is staged based on the severity of the disease, with stage 1 being the mildest form and stage 4 being the most severe. The treatment for ROP typically involves laser photocoagulation or anti-vascular endothelial growth factor (VEGF) injections to prevent further progression of the disease.
**Correct Answer: A. ROP is more common in preterm infants with lower birth weights.**