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Year : 2019  |  Volume : 67  |  Issue : 10  |  Page : 1579-1584

Comparison of structural integrity and functional status of corneal endothelium stored in Cornisol and Optisol-GS

1 Department of Immunology and Stem Cell Biology, Aravind Medical Research Foundation, Madurai, Tamil Nadu, India
2 Department of Cornea and Refractive Surgery, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India

Correspondence Address:
Dr. Gowri Priya Chidambaranathan
Chidambaranathan, Department of Immunology and Stem Cell Biology, Aravind Medical Research Foundation, Madurai - 625 020, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijo.IJO_2026_18

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Purpose: To compare the structural integrity and functional status of the donor corneas stored in Cornisol and Optisol-GS. Methods: Fifteen optical grade corneal donor buttons (6 pairs; 3 individual) obtained from Rotary Aravind International Eye Bank were used for the study. The left eye of the paired sample was preserved in Cornisol and the right in Optisol-GS. The three individual buttons were used for the baseline data. The corneas were assessed with slit lamp and specular microscope before and after storage time (7, 10, or 14 days). They were then immunostained for markers of structural integrity (ZO-1, Phalloidin) and functionality (Na+/K+ ATPase). The images were acquired using confocal microscope and analyzed using ImageJ software. Results: There was no difference in the clinical evaluation of the corneal layers between the two media. No marked variation was observed in the immunostaining data with reference to the storage period. Intact cellular integrity was identified in 91% (51%, 98%) [Median (min, max)] of cells in Cornisol and 94% (38%, 98%) cells in Optisol based on ZO-1 staining, comparable to the baseline data [87% (76%, 97%)]. Stress fibers were detected in 42.5% (1%, 88%) cells in Cornisol stored corneas and in 55% (11%, 94%) in Optisol when stained for actin cytoskeleton, which correlated with the presence of epithelial defect before storage and vacuolated endothelial cells after storage. No difference was observed between the two media based on the staining pattern for Na+/K+ ATPase. Conclusion: Cornisol and Optisol-GS are equivalent in maintaining the structural integrity and functionality of the donor corneas.

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