title: Comparison of corneal storage in K-Sol and chondroitin sulfate corneal storage medium in human corneal transplantation.
abstract: Fifty-one pairs of corneas, stored in either K-Sol or CSM (chondroitin sulfate corneal storage medium) from 8 to 97 hours (mean +/- standard deviation, 58 +/- 21 and 57 +/- 21 hours, respectively), were transplanted in a prospective, randomized manner into 99 patients (n = 102 eyes), paired by diagnostic group and procedure. Ninety-six percent of K-Sol grafts (n = 51) and 94% of the CSM grafts (n = 51) were clear at 6 months; 92% of both the K-Sol (n = 38) and CSM (n = 35) grafts were clear at 12 months. One primary donor failure occurred, a K-Sol cornea stored for 76 hours. The CSM group experienced a greater number of persistent epithelial defects beyond 2 weeks (7 versus 4 defects) and graft reaction episodes (7 versus 3 episodes) than the K-Sol group; however, an equal number of late graft failures (3) occurred in both groups. No significant differences by paired t test analyses were found in endothelial cell density, area, coefficient of variation, or figure coefficient at 3 (n = 37 pairs), 6 (n = 36 pairs), and 12 (n = 26 pairs) months between the two groups. Mean endothelial cell density significantly decreased by 11% +/- 22 by 3 months in the K-Sol group, whereas the 7% +/- 24 decrease in the CSM group was insignificant. By 12 months, both groups experienced a significant decrease: K-Sol, 27% +/- 22; CSM, 17% +/- 26. A significant decrease in the mean coefficient of variation (polymegathism) was noted after 3 months in the K-Sol group which returned to the preoperative mean by 1 year, whereas this parameter remained unchanged in the CSM group. Both chondroitin sulfate-based media result in successful corneal transplantation with storage up to 4 days; however, endothelial survival with both media are comparable with previous studies with McCarey-Kaufman (M-K) medium.
authors.affiliation: Division of Ophthalmology, Case Western Reserve University, Cleveland,OH.
authors.forename: J H
authors.initials: JH
authors.lastname: Lass
authors.forename: W J
authors.initials: WJ
authors.lastname: Reinhart
authors.forename: W E
authors.initials: WE
authors.lastname: Bruner
authors.forename: M L
authors.initials: ML
authors.lastname: Kachmer
authors.forename: M D
authors.initials: MD
authors.lastname: Lomeo
authors.forename: K M
authors.initials: KM
authors.lastname: Morgan
authors.forename: I
authors.initials: I
authors.lastname: Glavan
authors.forename: D R
authors.initials: DR
authors.lastname: Sanders
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002470:Cell Survival; D002807:Chondroitin / Q000031:analogs & derivatives; D002809:Chondroitin Sulfates; D016039:Corneal Transplantation; D003470:Culture Media; D004728:Endothelium, Corneal / Q000166:cytology; D004847:Epithelial Cells; D005260:Female; D006084:Graft Rejection; D006087:Graft vs Host Reaction; D006531:HEPES; D006801:Humans; D008297:Male; D008875:Middle Aged; D009113:Muramidase / Q000032:analysis; D010879:Piperazines; D011897:Random Allocation; D013997:Time Factors; D014021:Tissue Preservation / Q000379:methods*
chemical_list: D003470:Culture Media; C051174:K-Sol preserving medium; D010879:Piperazines; D002807:Chondroitin; D002809:Chondroitin Sulfates; D009113:Muramidase; D006531:HEPES