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Published on: August 4, 2018
Morphologic Features of Regulated vs. Dysregulated Rhegmatogenous Retinal Detachment Using Swept-Source Optical
Aurora Pecaku1, Sumana C Naidu1, Sueellen Demian1
1From the Department of Ophthalmology and Vision Sciences, University of Toronto (A.P., S.C.N., S.D., M.C.P., I.M.M.), Toronto, Ontario, Canada; Department of Ophthalmology, St. Michael's Hospital, Unity Health Toronto (A.P., S.C.N., S.D., M.C.P., I.M.M.), Toronto, Ontario, Canada.
Swept-source optical coherence tomography (SS-OCT) reveals distinct morphological differences in rhegmatogenous retinal detachment (RRD) based on retinal pigment epithelium (RPE) pump regulation. Outer retinal corrugations (ORCs) are key indicators differentiating regulated from dysregulated RRDs.
Area of Science:
- Ophthalmology
- Retinal Imaging
- Medical Diagnostics
Background:
- Rhegmatogenous retinal detachment (RRD) involves complex interactions between the neurosensory retina and retinal pigment epithelium (RPE).
- The RPE pump's regulatory capacity influences the subretinal space and RRD morphology.
- Swept-source optical coherence tomography (SS-OCT) offers high-resolution imaging for detailed RRD assessment.
Purpose of the Study:
- To characterize the morphological variations in RRD based on the RPE pump's regulation of the subretinal space.
- To differentiate between regulated and dysregulated RRDs using SS-OCT imaging.
- To identify specific OCT features associated with RPE-photoreceptor regulation status.
Main Methods:
- Prospective clinical cohort study conducted at St. Michael's Hospital from August 2020 to August 2023.
- Inclusion of 120 consecutive eyes with primary RRD, categorized as regulated (subclinical, non-progressive, localized) or dysregulated (acute, progressive, extensive) based on SS-OCT findings.
- Detailed analysis of morphological features, including outer retinal corrugations (ORCs) and cystoid macular edema (CME), and correlation with patient demographics and RRD staging.
Main Results:
- 80.8% of RRDs were classified as dysregulated, compared to 19.2% regulated.
- Dysregulated RRDs were associated with older age (62.6 vs. 37.1 years) and higher prevalence of ORCs (81.4% vs. 4.3%) and CME (87.3% vs. 41.6%) compared to regulated RRDs.
- ORC presence was an independent predictor of dysregulated RRD (P = .02).
- Significant differences in RRD staging were observed between regulated and dysregulated groups (P < .001).
Conclusions:
- Significant morphological differences exist between regulated and dysregulated RRDs visualized by SS-OCT.
- ORCs are a key indicator of dysregulated RRD, differentiating it from regulated RRDs.
- Understanding these morphological and clinical distinctions is crucial for optimizing RRD management and improving postoperative outcomes.
