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Related Experiment Videos

[Toxoplasmic choroiditis and subretinal neovessels].

I Skorska, G Soubrane, G Coscas

    Journal Francais D'Ophtalmologie
    |January 1, 1984
    PubMed
    Summary
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    Subretinal neovascularization can develop years after toxoplasma chorioretinitis, potentially causing vision loss. Early detection and treatment of these new vessels are crucial for better visual outcomes.

    Area of Science:

    • Ophthalmology
    • Infectious Diseases
    • Retinal Vascular Diseases

    Background:

    • Toxoplasma chorioretinitis, an ocular infection, can lead to long-term complications.
    • Subretinal neovascularization (SRNV) is a potential sequela of various retinal conditions.
    • Understanding the incidence and impact of SRNV in toxoplasmosis is important for patient management.

    Observation:

    • Thirty-six cases of toxoplasma chorioretinitis with fundus scars were analyzed.
    • Subretinal neovascularization was identified in 7 out of 36 cases (19.4%).
    • New vessels were located at the scar border or distant with feeders from the scar.

    Findings:

    • Angiography effectively identifies SRNV in early phases; late phases may show scar staining.
    • SRNV leakage can cause sudden visual acuity decline (0.4 to central scotoma) without inflammation.

    Related Experiment Videos

  • Visual acuity in SRNV cases averaged 0.18 after 5-42 months, compared to 0.5 without SRNV.
  • Photocoagulation in 3 eyes improved acuity to a mean of 0.3.
  • SRNV occurred 1-26 years post-acute chorioretinitis, during the healing phase.

    • Implications:

    • Subretinal neovascularization is a significant, late complication of toxoplasma chorioretinitis.
    • Prompt diagnosis and management of SRNV are essential to preserve visual function.
    • Further research into the pathogenesis and treatment of SRNV in ocular toxoplasmosis is warranted.