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Development of vision in retinopathy of prematurity
Insights
Infants with retinopathy of prematurity and macular dragging had poor visual acuity, while those without macular displacement had normal acuity. Surgery did not improve vision in some cases.
Area of Science:
- Ophthalmology
- Pediatric Medicine
- Visual Neuroscience
Background:
- Retinopathy of prematurity (ROP) is a leading cause of childhood blindness.
- Macular development is crucial for visual acuity.
- Surgical interventions for ROP aim to preserve or restore vision.
Purpose of the Study:
- To assess visual acuity in infants with retinopathy of prematurity based on macular status.
- To evaluate the impact of macular displacement and surgical intervention on visual outcomes in ROP.
Main Methods:
- Serial measurements of preferential-looking grating acuities were performed in 52 infants with ROP.
- Infants were categorized into groups based on macular displacement (none/mild vs. dragged).
- A subgroup of patients who underwent open-sky vitrectomy was analyzed.
Main Results:
- Infants with little or no macular displacement generally had normal visual acuity.
- Infants with dragged maculas consistently showed subnormal visual acuity, though it improved over time.
- Infants who underwent open-sky vitrectomy had significantly lower visual acuity despite successful retinal reattachment.
Conclusions:
- Macular displacement in retinopathy of prematurity is strongly associated with poor visual acuity.
- Surgical intervention (open-sky vitrectomy) did not lead to improved visual acuity in this cohort.
- Preservation of macular structure is critical for achieving normal visual function in ROP.
Abstract:
Serial measures (range, two to eight) of preferential-looking grating acuities of 52 infants with retinopathy of prematurity were made. Group 1 patients (n = 11), who had little or no macular displacement, had normal preferential-looking acuity except for two who had mild acuity deficits. None of the group 2 patients (n = 12), who had dragged maculas, ever had normal acuity. On the average, their acuities, which ranged from 1 to 6 octaves less than normal, gradually increased at a rate not significantly different from normal. Group 3 patients (n = 29), who had undergone open-sky vitrectomy, had significantly lower acuity despite reattachment of the retina.