{ OCT Luminor-D60M }

  • Early detection of diabetic retinopathy using OCT imaging

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    1) Traditional Screening Methods and Their Limitations


    Traditionally, the screening and staging of DR Mainly relied on color fundus photography to observe two-dimensional surface lesions such as retinal microaneurysms, hemorrhage and exudation. However, this method has limitations:

    Strong subjectivity: Relying on the doctor’s experience.

    Inability to observe deep structures: It is impossible to quantitatively assess the early structural damage of the retina, especially the early morphology of diabetic macular edema (DME).



    2) The core role of OCT in the early detection of DR

    OCT is a non-contact and non-invasive cross-sectional imaging technique, similar to “optical biopsy”, which can provide micrometer-resolution images of each layer of the retina. Its application in early DR Is mainly reflected in the following aspects:

    1. Detect subclinical diabetic macular edema

    Key finding: OCT can detect before clinically visible retinal thickening or hard exudation (visible in traditional fundus photography) occurs in patients:

    A slight thickening of the inner layer of the retina.

    Early and local damage to the outer structures of the retina (such as the ellipsoid zone and the external membrane).

    Tiny cystoid hyporeflex cavities (early cystoid edema).

    Significance: This enables doctors to initiate or intensify treatment (such as optimizing blood sugar and blood pressure control, or considering early anti-VEGF therapy) before vision decline occurs, thereby protecting central vision.


    2. Quantify the thinning of the retinal nerve fiber layer and ganglion cell layer

    Key finding: DR Is not only a vascular disease but also a neurodegenerative disorder. OCT can precisely measure:
    Retinal nerve fiber layer (RNFL) thickness: RNFL thinning can occur in patients with early-stage DR, which is related to the course of diabetes and blood glucose control.
    Ganglion cell-inner plexiform layer (GC-IPL) thickness: This is a more sensitive indicator. Its thinning may occur earlier than microvascular lesions, suggesting early neuronal damage related to diabetes.

    Significance: It provides objective biomarkers for the early neurodegeneration of DR, which is helpful for a comprehensive assessment of the condition.


    3. Identify subtle vascular abnormalities and ischemia
    OCT angiography (OCTA)

    : This is a revolutionary extension of OCT technology. Three-dimensional retinal and choroidal vascular maps can be generated without the injection of contrast agents.
    Early detection: It can clearly show the expansion and irregular shape of the non-perfusion area (ischemic area), the avascular area of the fovea centrae in the macular region (FAZ), and the reduced density of the retinal capillary network. These changes may occur in the early stage of DR (even in the non-proliferative phase).

    Advantages: Non-invasive, rapid and repeatable, it avoids the allergic risks associated with fluorescence angiography and is highly suitable for follow-up and monitoring.


    4. Monitor the changes at the vitreoretinal interface

    Key finding: Early DR May lead to abnormal adhesion or partial detachment of the posterior vitreous cortex (PVD), which is a risk factor for future traction, vascular rupture or macular edema. OCT can clearly display these subtle interface changes.

    3） Summary of OCT Technology Advantages
    High resolution and objective quantification: Provide objective and quantifiable data (thickness, volume, density), reducing subjective errors.
    Non-invasive and fast: Highly accepted by patients, suitable for routine screening and frequent follow-up.
    Three-dimensional and hierarchical analysis: It can precisely locate the level of the lesion in the retina.
    Function Expansion (OCTA) : It has achieved non-invasive capillary-level blood flow imaging, significantly enhancing the ability to detect early ischemia and vascular abnormalities.

    4） Application Paths in Clinical Practice
    Screening stage: For all patients with type 2 diabetes and those with a longer course of type 1 diabetes, in addition to traditional fundus photography, OCT (especially macular OCT) should be included as part of baseline examination and annual screening when conditions permit.
    Diagnosis and staging: When mild non-proliferative DR (NPDR) is detected by fundus photography, OCT can assess whether there is subclinical macular edema or thinning of the nerve layer, helping to conduct more precise risk stratification.
    Treatment decision-making and follow-up: For patients who have developed DME or require panretinal photocoagulation, OCT is the gold standard tool for guiding treatment (anti-VEGF, laser) and evaluating efficacy. OCTA is used to assess the degree of ischemia.


    Interested in becoming a distributor? Contact us for wholesale pricing.

    Also welcome to contact us, we are ZD Medical Inc.
    Tel : +86-187 9586 9515
    Email : sales@zd-med.com
    Whatsapp/Mobile : +86-187 9586 9515


  • What are the benefits of using a Vein finder?

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    As a medical aid device, Vein Finder has significant advantages in clinical operation, especially in Settings such as venipunction and vascular evaluation, which improves efficiency and patient experience. Here is a comprehensive analysis of its core strengths:


    1. Improve clinical operation efficiency and success rate
    • High first-time puncture success rate: Through near-infrared light technology, the vein imaging device can clearly show the location, direction and fork of subcutaneous veins, helping medical staff to quickly locate, especially for obese patients, children and other groups whose blood vessels are difficult to palpate. Thinner or deeper veins can be detected, significantly reducing the number of repeated piercings.
    • Reduce operation time: The device supports hand-held or stent fixation, freeing the hands of medical staff and simplifying the operation process.

    1. Technological innovation and multi-functional design
    • Multi-mode adaptation to different needs:
    • Depth detection and centerline display: vein midline marking and distance sensing function, guide puncture Angle and depth, reduce the risk of mispuncture.
    • Intelligent energy-saving design: The device has a sleep mode, fast charging and long battery life to improve the ease of use.

    1. Improve patient experience and medical safety
    • Reduces pain and anxiety: Accurate vein positioning reduces pain caused by repeated punctures and is especially friendly to children or patients with fragile blood vessels. Studies have shown that the use of venous imaging devices can significantly improve patient satisfaction.
    • Reduce the risk of medical disputes: By improving the success rate of puncture, reduce the conflict between doctors and patients caused by operation failure, and ensure the safety of the device without radiation (using harmless near-infrared light).

    1. Economy and wide applicability
    • Lower overall costs: Long-term savings in healthcare costs by reducing consumable waste and repetitive operations
    • Multi-scenario application: The equipment covers many departments such as pediatrics, emergency, vascular surgery, etc., and can also be used for teaching demonstration or scientific research.

    1. Certification and reliability
    • Complete international certification: Through CE, FDA, ISO and other certifications, in line with global medical device standards to ensure compliance and market access.

      Sum up

      Through technological innovation and humanized design, venous imaging instrument has shown significant advantages in improving medical efficiency, ensuring patient safety and reducing costs. Different models offer a variety of options for different needs, such as the VS series focusing on high-end features and certifications, while the economy model meets basic needs. In the future, with the further integration of advanced technologies such as OCT, the accuracy and application range of venous imaging devices are expected to continue to expand.


      Also welcome to contact us, we are ZD Medical Inc.
      Tel : +86-187 9586 9515
      Email : sales@zd-med.com
      Whatsapp/Mobile : +86-187 9586 9515