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Purpose: To study the success rate of LASER as a primary modality of treatment in APROP cases. Methods: A prospective case series of 56 eyes of 28 preterm babies (Males =21 , Females = 07) with Aggressive Posterior Retinopathy of Prematurity (APROP) who underwent Laser therapy. Babies were divided into groups on the basis of gestational age (GA), birth weight (BW) and post menstrual age (PMA) at which treatment was performed. GA ( in weeks) : < 28 (n= 7), 28-30 (n=11), >30 (n=10). BW (in grams) : <1000 (n= 8), 1000-1200 (n= 10), >1200 (n= 10). PMA (in weeks) : < 32 (n= 6), 32-34 (n= 18), >34 (n= 4). Success was calculated as complete regression of disease without need for any other modality of treatment like Anti-VEGF ( Vascular Endothelial Growth Factor) or pars plana vitrectomy. Results: The overall success rate was 94.64 % (53/56). Two Babies who needed additional modality of treatment were < 28 weeks of GA ( 1 eye ) and 28-30 weeks ( 2 eyes). One baby ( 1 eye) was < 1000 grams and 1 baby ( 2 eyes) was > 1200 grams, while PMA at which additional treatment was needed was 30 weeks in 1 baby ( 1 eye) and 33 weeks in the other ( 2eyes). Conclusion: In this era of Anti-VEGF treatment, even in cases of APROP, LASER should still be considered as a primary modality of treatment , as its a one time treatment without the fear of systemic side effects and recurrence / persistent avascular zones.