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Corneal thickness after vitrectomy and infusion with dextran solution

G A Peyman, G A Stainer, G Asdourian

    Annals of Ophthalmology
    |October 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Dextran in intraocular irrigating fluid reduced corneal swelling after eye surgery. This finding suggests dextran can help manage postoperative corneal edema in patients undergoing lens extraction and vitrectomy.

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    Full-Field Optical Coherence Microscopy for Histology-Like Analysis of Stromal Features in Corneal Grafts

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    Area of Science:

    • Ophthalmology
    • Corneal Physiology
    • Surgical Innovation

    Background:

    • Corneal endothelial decompensation can occur after intraocular surgeries like extracapsular lens extraction and vitrectomy.
    • Maintaining corneal clarity and function post-surgery is crucial for visual recovery.
    • Standard irrigating solutions may not optimally prevent corneal edema.

    Purpose of the Study:

    • To evaluate the impact of different intraocular infusion solutions on corneal thickness after extracapsular lens extraction and vitrectomy in rabbits.
    • To determine if dextran-containing solutions offer superior protection against corneal edema compared to standard solutions.

    Main Methods:

    • Corneal thickness was measured using pachymetry in rabbits undergoing extracapsular lens extraction and vitrectomy.
    • Three infusion solutions were tested: 0.9% sodium chloride, 0.45% sodium chloride with 2.5% glucose, and 0.45% sodium chloride with 2.5% glucose and 2% dextran.
    • The degree of corneal endothelial decompensation was assessed by changes in corneal thickness.

    Main Results:

    • The infusion solution containing 0.45% sodium chloride, 2.5% glucose, and 2% dextran resulted in the least increase in corneal thickness.
    • Vitrectomy and vitreous replacement with the dextran-containing solution showed a protective effect on corneal endothelium.
    • Other tested solutions led to greater corneal swelling, indicating less endothelial protection.

    Conclusions:

    • Dextran, as a colloid osmotic agent in intraocular irrigating fluids, may effectively control and decrease postoperative corneal edema.
    • The addition of dextran to irrigating solutions warrants further investigation for its role in preventing corneal complications after intraocular surgery.
    • This study provides evidence for optimizing irrigating fluid composition to improve surgical outcomes in ophthalmology.