Endothelial barrier function after phacoemulsification: a comparison between diabetic and non-diabetic patients

Area of Science:

• Ophthalmology
• Diabetic Retinopathy
• Corneal Endothelium

Background:

• Phacoemulsification with intraocular lens (IOL) implantation is a common cataract surgery.
• The corneal endothelium plays a crucial role in maintaining corneal clarity.
• Diabetic patients may have altered endothelial function, potentially impacting surgical outcomes.

Purpose of the Study:

• To quantitatively assess early postoperative endothelial damage after phacoemulsification with posterior chamber IOL implantation.
• To compare endothelial permeability changes between diabetic and non-diabetic patients.
• To determine the recovery timeline of endothelial barrier function in both groups.

Main Methods:

• Endothelial fluorophotometry was performed on 21 diabetic and 23 non-diabetic patients.
• Measurements were taken preoperatively and at 4 days, 3 weeks, and 6 weeks post-surgery.
• Automated computerized fluorophotometry with topical fluorescein instillation was utilized.

Main Results:

• Preoperative endothelial permeability was similar between diabetic and non-diabetic patients.
• Four days post-surgery, endothelial permeability significantly increased in both groups (P < 0.001).
• Diabetic patients exhibited a significantly greater increase in endothelial permeability (P < 0.001) and a delayed recovery of endothelial barrier function (6 weeks vs. 3 weeks for non-diabetics).

Conclusions:

• Phacoemulsification with posterior chamber IOL implantation causes transient endothelial damage in all patients.
• Diabetic patients are more susceptible to endothelial damage and have a prolonged recovery period.
• Corneal endothelial function recovery after cataract surgery is significantly slower in diabetic individuals.