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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Complications of Diabetes Mellitus01:22

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Diabetes mellitus is a chronic metabolic disorder characterized by persistent hyperglycemia due to insulin deficiency, resistance, or both. Prolonged hyperglycemia disrupts metabolic homeostasis and leads to acute and chronic complications.Acute ComplicationsAcute complications result from sudden metabolic imbalance.Diabetic ketoacidosis (DKA) mainly appears in type 1 diabetes but may also develop in type 2 diabetes, particularly under extreme stress. It arises from severe insulin deficiency,...
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Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory...
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Diabetic Retinopathy01:27

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DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
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Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration...
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Related Experiment Video

Updated: Apr 26, 2026

An Ex Vivo Tissue Culture Model for Fibrovascular Complications in Proliferative Diabetic Retinopathy
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Diabetic vitrectomy.

P R Pavan, T A Weingeist, N J McLane

    International Ophthalmology Clinics
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Diabetic vitrectomy effectively removes vitreous blood and relieves macular traction, but carries significant risks. Visual improvement is common with favorable factors, though certain conditions lower success rates.

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    Area of Science:

    • Ophthalmology
    • Surgical Procedures
    • Diabetic Retinopathy Management

    Background:

    • Diabetic vitrectomy addresses vitreous hemorrhage and macular traction in diabetic retinopathy.
    • The procedure involves removing opacities, severing hyaloid face connections, and sectioning preretinal membranes.

    Purpose of the Study:

    • To review the indications, methods, complications, and outcomes of diabetic vitrectomy.
    • To identify factors influencing visual improvement and long-term results.

    Main Methods:

    • Surgical techniques including cutting/sucking probes and intraocular scissors for membrane sectioning.
    • Analysis of postoperative complications such as retinal breaks, bleeding, and neovascular glaucoma.

    Main Results:

    • Visual improvement rates range from 59% to 78% in eyes with favorable prognostic factors.
    • Preoperative iris neovascularization, advanced proliferative diabetic retinopathy, and macular detachment correlate with lower success rates.
    • Sustained visual improvement is typically observed at 6 months postoperatively.

    Conclusions:

    • Diabetic vitrectomy is a crucial intervention for managing complications of diabetic retinopathy.
    • Careful surgical management is essential to minimize complications and optimize visual outcomes.
    • Prognostic factors significantly impact the success rate and long-term efficacy of the procedure.