Myopic Choroidal Neovascularization
Conditions
Keywords
Deep learning
Brief summary
Myopic choroidal neovascularization (mCNV) is one of the sight-threatening complications secondary to pathological myopia. Intravitreal injection of anti-vascular endothelial growth factor (VEGF) is its first-line therapy. However, mCNV is prone to recurrence and long-term visual decline, and there is currently no definitive method for predicting long-term prognosis. This project aims to conduct a long-term follow-up and multi-dimensional quantitative analysis of mCNV using optical coherence tomography angiography (OCTA) images. It seeks to evaluate long-term prognostic indicators, such as recurrence and long-term visual acuity, following anti-VEGF therapy for mCNV, and to construct a deep learning (DL) prediction model for anti-VEGF efficacy based on multi-modal clinical data, ultimately enabling treatment personalization. First, deep learning technology will be utilized to segment and quantitatively analyze mCNV in OCTA images, obtaining multi-dimensional quantitative parameters. These include OCTA-based The mCNV area and vessel junction(VJ). Patients will be followed up regularly for two years post-treatment, monitoring the number of injections, mCNV recurrence, OCT and OCTA quantitative parameters, fundus chorioretinal atrophy lesions, and visual acuity status. A multi-modal DL prediction model will be constructed, primarily based on the multi-dimensional quantitative characteristics of mCNV from OCTA images. This model will aim to identify sensitive indicators for predicting best-corrected visual acuity and recurrence after anti-VEGF therapy for mCNV and to clarify the relationship between therapeutic efficacy, baseline lesion status, and treatment regimen selection. This research will open new avenues for clinically assessing the long-term efficacy of anti-VEGF therapy for mCNV, significantly improve the efficiency and accuracy of efficacy evaluation, and provide a critical reference for personalizing anti-VEGF treatment plans, holding substantial clinical significance.
Interventions
OTHERNo interventions beyond routine medical care
No interventions beyond routine medical care
Sponsors
Second Affiliated Hospital, School of Medicine, Zhejiang University
Study design
Observational model
CASE_ONLY
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No
Inclusion criteria
* Myopic spherical equivalent greater than -6.0 diopters and/or axial length \> 26.5 mm. * Patients presenting with myopic fundus changes, as defined by the International Photographic Classification System for Myopic Maculopathy. * Completion of a comprehensive ophthalmic examination at initial diagnosis, including Best Corrected Visual Acuity , slit-lamp examination, dilated fundus examination, intraocular pressure measurement, refractometry, axial length measurement, color fundus photography, Optical Coherence Tomography, OCT Angiography, and Fundus Fluorescein Angiography. * Patients with active mCNV at initial diagnosis who are treatment-naïve. * Final inclusion of all images required confirmation by two retinal specialists. Images with discrepant assessments were adjudicated by a senior researcher to reach a final decision.
Exclusion criteria
* Patients with choroidal neovascularization (CNV) due to causes other than myopia, such as age-related macular degeneration, adult-onset foveomacular vitelliform dystrophy, multifocal choroiditis, punctate inner choroidopathy, or retinoschisis. * Poor-quality OCTA images, for example, those containing projection artifacts from overlying vessels at the mCNV lesion site, or excessively dark images dominated by thick outer choroidal vessels. * Patients with a history of intraocular surgery, such as prior pars plana vitrectomy. * Subjects who developed any of the above conditions during the follow-up period or who requested to withdraw from the study were removed from the experimental cohort.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Best-Corrected Visual Acuity at 24 Months | Baseline to 24 months | This outcome evaluates the change in best-corrected visual acuity (BCVA) from baseline to 24 months in eyes with myopic choroidal neovascularization receiving intravitreal anti-vascular endothelial growth factor treatment as part of routine clinical care. BCVA reflects functional visual outcome and is measured at each visit using the Early Treatment Diabetic Retinopathy Study (ETDRS) chart under standardized testing conditions. BCVA values are recorded as ETDRS letter scores, and the primary assessment is the within-eye change from baseline to the 24-month follow-up visit. |
| Number of Recurrence Events During 24-Month Follow-up | Baseline to 24 months | This outcome assesses disease activity by quantifying the number of recurrence events during the 24-month follow-up period in eyes with myopic choroidal neovascularization treated with intravitreal anti-vascular endothelial growth factor therapy. Recurrence is defined as the reappearance of active myopic choroidal neovascularization following an initial treatment response, as determined by clinical examination and imaging findings, including evidence of lesion activity that necessitates additional anti-vascular endothelial growth factor treatment. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Myopic Choroidal Neovascularization Area at 24 Months | Baseline to 24 months | This outcome evaluates anatomical changes of the neovascular lesion by assessing the change in myopic choroidal neovascularization (mCNV) area from baseline to 24 months using optical coherence tomography angiography (OCTA). mCNV area is defined as the total en face area of the neovascular lesion identified on OCTA images. Measurements are obtained at baseline and follow-up visits to assess longitudinal changes in lesion size associated with anti-vascular endothelial growth factor treatment during the 24-month observation period. |
| Change In Number of Vessel Junctions at 24 Months | Baseline to 24 months | This outcome assesses microvascular structural characteristics of the myopic choroidal neovascularization lesion by evaluating changes in the number of vessel junctions from baseline to 24 months using optical coherence tomography angiography (OCTA). Vessel junctions are defined as branching or connection points within the neovascular network visible on OCTA images. Changes in vessel junctions over time are used to describe morphological remodeling of the neovascular complex following intravitreal anti-vascular endothelial growth factor treatment during the follow-up period. |
Contacts
CONTACTYao Wang 王
Outcome results
None listed