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Corneal endothelial function after extracapsular cataract extraction and phacoemulsification

G Ravalico1, D Tognetto, M A Palomba

  • 1Istituto di Clinica Oculistica, Università di Trieste, Ospedale Maggiore, Italy.

Journal of Cataract and Refractive Surgery
|November 14, 1997
PubMed
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Phacoemulsification surgery causes less early functional damage to the corneal endothelium compared to extracapsular cataract extraction (ECCE). This study found phacoemulsification minimized postoperative endothelial dysfunction, unlike ECCE.

Area of Science:

  • Ophthalmology
  • Corneal Science
  • Surgical Outcomes

Background:

  • Cataract surgery involves removing the clouded lens and replacing it with an artificial intraocular lens (IOL).
  • Extracapsular cataract extraction (ECCE) and phacoemulsification are common surgical techniques.
  • The corneal endothelium is crucial for maintaining corneal clarity and function.

Purpose of the Study:

  • To compare the early postoperative effects of ECCE and phacoemulsification on corneal endothelial morphology and function.
  • To assess visual acuity, endothelial cell characteristics, corneal thickness, and endothelial permeability after cataract surgery.

Main Methods:

  • A prospective, randomized study involving 40 patients undergoing cataract surgery.
  • Patients were divided into two groups: ECCE (Group 1) and phacoemulsification (Group 2), both receiving capsular bag IOL implantation.

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  • Evaluations included ophthalmological exams, specular microscopy, pachymetry, and fluorophotometry at baseline and 7 and 30 days postoperatively.

    • Main Results:

    • Visual acuity improved faster with phacoemulsification at 7 days but showed no difference at 30 days.
    • No significant differences in endothelial cell loss were observed between the two groups.
    • Corneal thickness and endothelial permeability increased postoperatively, particularly in the ECCE group at 30 days. Phacoemulsification showed improved endothelial pump function.

    Conclusions:

    • Early functional impairment of the corneal endothelium was observed after ECCE.
    • Phacoemulsification appears to reduce early postoperative functional damage to the corneal endothelium compared to ECCE.