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Central Retinal Vessel Trunk Dragging in Highly Myopic Eyes
Jost B Jonas1, Rahul A Jonas2, Ya Xing Wang3
1Rothschild Foundation Hospital, Paris, France; Singapore Eye Research Institute, Singapore National Eye Center, Singapore; Beijing Visual Science and Translational Eye Research Institute (BERI), Beijing Tsinghua Changgung Hospital, Tsinghua Medicine, Tsinghua University, Beijing, China; L V Prasad Eye Institute, Hyderabad, Telangana, India; Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong; New York Eye and Ear Infirmary of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Privatpraxis Prof Jonas und Dr. Panda-Jonas, Heidelberg, Germany.
Central retinal vessel trunk (CRVT) dragging is common in highly myopic eyes, increasing with axial length and fovea-disc distance. This finding is crucial for diagnosing optic neuropathies in myopic individuals.
Area of Science:
- Ophthalmology
- Retinal Imaging
- Optic Nerve Health
Background:
- Central retinal vessel trunk (CRVT) dragging is a morphological change observed in the optic nerve head.
- Its prevalence and associations, particularly in the context of myopia, require further investigation.
Purpose of the Study:
- To determine the occurrence of CRVT dragging.
- To investigate associations between CRVT dragging and ocular parameters, especially in highly myopic individuals.
Main Methods:
- Retrospective, population-based cohort study utilizing optical coherence tomographic images from the Beijing Eye Study.
- Assessment of CRVT dragging prevalence based on optic disc morphology and correlation with axial length, fovea-disc distance, and other ocular features.
Main Results:
- CRVT dragging prevalence significantly increased with longer axial length and greater optic disc-fovea distance.
- Associations were found with parapapillary retinoschisis, temporal retinal vessel straightening, and myopic macular degeneration.
- Prevalence reached 72.2% in eyes with axial length >28.0mm.
Conclusions:
- CRVT dragging is a common feature in highly myopic eyes, likely due to axial elongation increasing fovea-disc distance.
- This finding is important for the morphological diagnosis of optic neuropathies in highly myopic eyes, influencing the optic nerve head's 3D appearance.
