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Updated: Dec 21, 2025

Doppler Optical Coherence Tomography of Retinal Circulation
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The optic nerve drusen and haemodynamics.

J Čmelo, J Valašková, V Krásnik

    Ceska a Slovenska Oftalmologie : Casopis Ceske Oftalmologicke Spolecnosti a Slovenske Oftalmologicke Spolecnosti
    |May 14, 2020
    PubMed
    Summary
    This summary is machine-generated.

    Optic nerve head drusen (DON) can affect ocular hemodynamics, but size alone doesn't predict impairment. Deterioration of hemodynamic parameters (HP) in DON may depend on location and intrapapillary vascularity, not just druse size.

    Keywords:
    Doppler ultrasonographydrusen optic nerveflow parametersglaucomahaemodynamicsvisual field

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    Area of Science:

    • Ophthalmology
    • Neuro-ophthalmology
    • Medical Imaging

    Background:

    • Optic nerve drusen (DON) are common, but their impact on ocular hemodynamics (HP) is less understood.
    • Visual field changes in DON can be difficult to assess due to overlap with optic disc excavation.
    • HP is crucial for optic nerve health and can be affected by vascular supply changes.

    Purpose of the Study:

    • To prospectively evaluate hemodynamic parameters (HP) in patients with optic nerve drusen (DON).
    • To investigate the relationship between the size of DON and HP.
    • To determine if HP can be predicted by DON size.

    Main Methods:

    • Fifty-four patients with compensated intraocular pressure and DON were prospectively studied.
    • DON were classified into three groups based on area size (up to 1.9 mm, 1.9–3.9 mm, and ≥4.0 mm).
    • Hemodynamic parameters (MSV, MDV, RI, IP) were measured in the central retinal artery (CRA), central retinal vein (CRV), ciliary arteries (CPAb), and ophthalmic artery (AO).

    Main Results:

    • No linear relationship was found between DON size and HP.
    • Slight and significant worsening of HP at the CRA increased with DON size, observed in 28.6% (Group I), 48.3% (Group II), and 62.4% (Group III).
    • HP in the ciliary and ophthalmic arteries showed no significant changes related to DON presence or size.

    Conclusions:

    • Hemodynamic parameter impairment is more frequent in larger optic nerve drusen but not a strict rule.
    • DON size alone is insufficient to predict hemodynamic parameter deterioration.
    • HP deterioration in DON may be influenced by druse location and intrapapillary vascular system characteristics.