COMPARING THE OUTCOME OF SINGLE VERSUS MULTIPLE SESSION LASER PHOTOABLATION OF FLAT NEOVASCULARIZATION IN ZONE 1 AGGRESSIVE POSTERIOR RETINOPATHY OF PREMATURITY: A Prospective Randomized Study.

Abstract

PURPOSE:

To compare single versus 2-session laser photoablation for flat neovascularization in cases with Zone 1 aggressive posterior retinopathy of prematurity.

METHODS:

Twenty-nine Asian Indian infants with aggressive posterior retinopathy of prematurity were randomized; each eye received 1 of 2 methods (29 each in Group A or B) proposed by the PHOTO-ROP group. Group A underwent single session laser to the avascular retina underlying the flat neovascularization by direct laser over the fronds. Group B underwent laser in 2 sessions; first, laser was delivered to the avascular periphery up to the flat neovascularization and 7 days later to the avascular bed exposed by the retraction of the fronds. Outcome and complications between the two groups were compared.

RESULTS:

Mean birthweight and gestational ages were 1,276 g and 30.1 weeks, respectively. All eyes showed favorable outcome at a minimum 12-month follow-up. Hemorrhages after laser (41.4% vs. 17.2%, P < 0.001) were more common in the single laser group. Large hemorrhages (>1 disk diameter) seen in Group A took longer than 8 weeks to resolve and developed focal fibrosis.

CONCLUSION:

This study demonstrates that the two-staged laser procedure produces fewer and smaller hemorrhages and no fibrosis compared with a single session. Both methods have comparable favorable outcomes in Asian Indian infants.

• Authors: Anand Vinekar, Chaitra Jayadev, Shwetha Mangalesh, Anupama Kiran Kumar, Noel Bauer, Antonio Capone Jr, Michael Trese, Bhujang Shetty
• Journal: Retina (Philadelphia, Pa.) (Retina) Vol. 35 Issue 10 Pg. 2130-6 (Oct 2015) ISSN: 1539-2864 [Electronic] United States
• PMID: 25996425 (Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial)

Topics

• Birth Weight
• Fibrosis
• Follow-Up Studies
• Gestational Age
• Humans
• Laser Coagulation (adverse effects, methods)
• Postoperative Complications
• Prospective Studies
• Retina (pathology)
• Retinal Hemorrhage (etiology, prevention & control)
• Retinal Neovascularization (physiopathology, surgery)
• Retinopathy of Prematurity (physiopathology, surgery)
• Treatment Outcome