Related Experiment Videos
Avascular zone in the macula in cicatricial retinopathy of prematurity
Insights
Retinopathy of prematurity in children can lead to underdeveloped avascular zones in the macula. These underdeveloped zones correlate with more severe active-stage ocular issues, though visual acuity often remains good.
Area of Science:
- Ophthalmology
- Retinal Vascular Diseases
- Pediatric Ophthalmology
Background:
- Retinopathy of prematurity (ROP) is a leading cause of childhood blindness.
- Cicatricial ROP can lead to significant structural changes in the retina.
- Understanding macular avascular zone development is crucial for assessing ROP severity.
Observation:
- Fluorescein angiography was used to examine macular avascular zones in children with cicatricial ROP.
- A control group of full-term infants was included for comparison.
- Patients with cicatricial ROP exhibited smaller mean avascular zone diameters compared to controls.
Findings:
- The mean avascular zone diameter in ROP patients was significantly smaller than in controls (P < .001).
- Underdeveloped avascular zones (≤0.2 disk diameter) were associated with more severe active-stage ocular manifestations.
- Well-developed avascular zones (>0.21 disk diameter) were also observed, with varying severity.
Implications:
- Macular avascular zone size in cicatricial ROP may serve as an indicator of disease severity.
- Underdeveloped avascular zones suggest a more aggressive disease course.
- Further research can explore the prognostic value of avascular zone measurements in ROP management.
Abstract:
Avascular zones in the maculas of 49 eyes of 33 patients aged 5 to 15 years with cicatricial retinopathy of prematurity were examined by fluorescein angiography. Twenty-three eyes of 18 subjects under 15 years of age who had been born at full term served as controls. The mean diameter of the avascular zones in the patients was 0.22 +/- 0.09 disk diameter, which was smaller than the diameter of 0.32 +/- 0.05 disk diameter in the controls (P less than .001). The patient group was divided into those with avascular zones of 0.2 disk diameter or less, regarded as underdeveloped avascular zones, and those with zones of 0.21 disk diameter or more, considered well-developed avascular zones. In the first group, ocular manifestations in the active stage were statistically more severe than in the second group. Visual acuity was good in most patients in each group.