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Visual outcomes after early vitreous surgery for aggressive posterior retinopathy of prematurity
Noriyuki Azuma1, Makiko Ito, Tadashi Yokoi
1Department of Ophthalmology and Laboratory of Cell Biology, National Center for Child Health and Development, Tokyo, Japan.
Insights
Early vitreous surgery for aggressive posterior retinopathy of prematurity (AP-ROP) can improve visual acuity (VA) outcomes. Performing surgery before fibrovascular tissue reaches the vitreous base is crucial for foveal formation and better VA.
Area of Science:
- Ophthalmology
- Retinopathy of Prematurity
- Surgical Interventions
Background:
- Aggressive posterior retinopathy of prematurity (AP-ROP) is a severe form of ROP that progresses rapidly to retinal detachment.
- Standard photocoagulation treatment is often insufficient for AP-ROP, necessitating alternative therapeutic strategies.
- Early intervention may be key to managing neovascular activity and achieving retinal reattachment.
Purpose of the Study:
- To evaluate the visual outcomes in eyes diagnosed with AP-ROP following early vitreous surgery.
- To determine the impact of surgical timing and disease progression on visual acuity.
Main Methods:
- Retrospective nonrandomized study involving patients who underwent early vitreous surgery with lensectomy for AP-ROP.
- Visual acuity (VA) was measured using the preferential looking technique and VA charts.
- Data collected included postoperative VA, ROP stage, extent of fibrovascular tissue (FT) growth, and laterality.
Main Results:
- Visual acuity ranged from 20/2000 to 20/40.
- Preoperative FT extent, not ROP stage, correlated with VA outcomes.
- Eyes with FT not reaching the vitreous base showed better VA (20/250 to 20/40) due to postoperative foveal formation; those with FT reaching the vitreous base had poorer VA (20/2000 to 20/250) and no foveal formation.
Conclusions:
- Early vitreous surgery appears beneficial for AP-ROP, particularly when performed before FT invasion of the vitreous base.
- Facilitating foveal formation through timely surgery is critical for achieving good visual outcomes.
- Further randomized trials are needed to compare photocoagulation, vitreous surgery, and anti-VEGF therapy for AP-ROP.
Importance:
Aggressive posterior retinopathy of prematurity (AP-ROP) rapidly progresses to retinal detachment despite application of photocoagulation. Early vitreous surgery might achieve prompt regression of neovascular activity and a high incidence of retinal reattachment.
Objective:
To evaluate visual outcomes in eyes with AP-ROP after early vitreous surgery.
Design:
Retrospective nonrandomized study of patients who underwent early vitreous surgery with lensectomy when retinal detachment developed despite photocoagulation. Aphakic correction with spectacles or contact lenses and the use of orthoptics were continued postoperatively. The best-corrected visual acuity (VA) was measured in eyes with a total retinal reattachment using the preferential looking technique in patients ranging in age from 8 months to no more than 3 years and a VA chart with Landolt rings or pictures for older children. The VA findings were converted to Snellen lines.
Setting:
Institutional ophthalmology practice.
Participants:
Of the 103 eyes (57 patients) that underwent early vitreous surgery for AP-ROP, the VA was measured in 58 (32 patients) at a corrected age ranging from 8 months to 4 years.
Interventions:
Early vitreous surgery and VA measurement using the preferential looking technique and a VA chart.
Main Outcomes And Measures:
Postoperative VA, ROP stage, extent of fibrovascular tissue (FT) growth, and laterality of the eyes that underwent surgery.
Results:
The VAs ranged from 20/2000 to 20/40. The VA may not be related to the preoperative ROP stage 4A or 4B but may depend on the preoperative extent of FT growth. In 39 of 58 eyes (67.2%), the FT had not reached the vitreous base preoperatively, and foveal formation occurred postoperatively with nearly age-appropriate VA (range, 20/250 to 20/40). In 17 of 58 eyes (29.3%), the FT had reached the vitreous base, and no fovea formed (VA range, 20/2000 to 20/250). Two of 58 eyes (3.4%) had deprivation amblyopia with a VA worse than 20/1600. The difference in VA between both eyes of patients who underwent bilateral vitreous surgery depended on ROP progression; patients who underwent a unilateral procedure in which the fellow eyes with ROP stabilized after photocoagulation tended to have poor vision because of deprivation amblyopia.
Conclusions And Relevance:
Early vitreous surgery may be beneficial for AP-ROP and should be performed before the FT reaches the vitreous base to facilitate foveal formation and good VA outcomes. The roles of photocoagulation, vitreous surgery, and anti-vascular endothelial growth factor therapy in the treatment of AP-ROP should be investigated in randomized trials regarding efficacy, safety, convenience, and cost.
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