Article

Pre-cut tissue promising technique for DSAEK

The early results after use of pre-cut tissue for Descemet stripping automated endothelial keratoplasty (DSAEK) indicate that there is rapid restoration of good vision with no difference in complications compared with tissue that is cut by the surgeon. The tissue dislocation rate is low (1%), as is the loss of donor endothelial cells.

Key Points

Dr. Terry and colleagues carried out a prospective, non-comparative, interventional case series that included 100 consecutive endothelial keratoplasties using pre-cut tissue. The patients included in the study were a mean age of 71 ± 11 years, and 51% were women. The majority (84%) of patients had Fuchs' dystrophy.

The complications that have been identified with pre-cut tissue are graft dislocations, primary graft failure, and development of pupillary block glaucoma, according to Dr. Terry, who is director of corneal services, Devers Eye Institute, Portland, OR.

The donor tissue was obtained from individuals who were a mean age of 58 ± 11 years (range, 27 to 74 years). The mean time from donor death to preservation of the tissue was 10 ± 3 hours (range, 3 to 18 hours). The mean time from donor death to surgery was 95 ± 36 hours (range, 31 to 165 hours). The mean time from pre-cutting of the tissue to surgery was 26 ± 17 hours (range, 2 to 94 hours). The mean posterior lenticular thickness was 169 ± 36 μm (range: 88 to 257 μm). The mean endothelial cell count after the tissue was pre-cut was 2,709 ± 292 cells/mm2 (range, 2,110 to 3,473 cells/mm2 ).

The only complication associated with using pre-cut tissue for DSAEK in this series of patients was one case (1%) of dislocation. There were no cases of primary graft failure or development of pupillary block glaucoma. The one dislocation occurred as a result of surgeon error in performance of the technique, i.e., eccentric trephination followed by trimming of a thick edge with scissors, Dr. Terry described.

Based on their results, Dr. Terry concluded, "Complications from DSAEK can be avoided by using the proper technique. Dislocations and graft failure in DSAEK surgery are not the result of any specific donor characteristics. The use of pre-cut tissue with a wide range of values is safe for DSAEK," he said.

Of the 100 patients, 45 were evaluated 6 months after surgery. The mean preoperative visual acuity (VA) was 20/61 that improved to a mean postoperative value of 20/33. A total of 82% of patients achieved 20/40 or better, and 20% achieved 20/20 or better, Dr. Terry reported.

The 32 patients with no retinal disease fared better than those with retinal disease. The mean preoperative VA in this subgroup of patients was 20/60 and the mean postoperative VA was 20/27. Of the 32 patients with no retinal disease, 100% had postoperative VA of 20/40 or better, and 28% had 20/20 or better.

Dr. Terry also pointed out that the improvements in vision were not significantly correlated with any donor characteristics.

Newsletter

Don’t miss out—get Ophthalmology Times updates on the latest clinical advancements and expert interviews, straight to your inbox.

Related Videos
(Image credit: Ophthalmology Times)  ASCRS 2025: Joaquin De Rojas, MD, leverages machine learning model to predict arcuate outcomes
(Image credit: Ophthalmology Times) ASCRS 2025: AnnMarie Hipsley, DPT, PhD, presents VESA for biomechanical simulation of presbyopia progression
Shehzad Batliwala, DO, aka Dr. Shehz, discussed humanitarian ophthalmology and performing refractive surgery in low-resource, high-risk areas at the ASCRS Foundation Symposium.
(Image credit: Ophthalmology Times) ASCRS 2025: Advancing vitreous care with Inder Paul Singh, MD
(Image credit: Ophthalmology Times) The Residency Report: Study provides new insights into USH2A target end points
Lisa Nijm, MD, says preoperative osmolarity testing can manage patient expectations and improve surgical results at the 2025 ASCRS annual meeting
At the 2025 ASCRS Annual Meeting, Weijie Violet Lin, MD, ABO, shares highlights from a 5-year review of cross-linking complications
Maanasa Indaram, MD, is the medical director of the pediatric ophthalmology and adult strabismus division at University of California San Francisco, and spoke about corneal crosslinking (CXL) at the 2025 ASCRS annual meeting
(Image credit: Ophthalmology Times) ASCRS 2025: Taylor Strange, DO, assesses early visual outcomes with femto-created arcuate incisions in premium IOL cases
(Image credit: Ophthalmology Times) ASCRS 2025: Neda Shamie, MD, shares her early clinical experience with the Unity VCS system
© 2025 MJH Life Sciences

All rights reserved.