Anterior Chamber Characteristics, Endothelial Parameters, and Corneal Densitometry After Descemet Stripping Automated Endothelial Keratoplasty in Patients With Fuchs Dystrophy

Abstract

Purpose: To compare anterior segment parameters in patients with Fuchs endothelial dystrophy (FED) who underwent Descemet stripping automated endothelial keratoplasty (DSAEK) in one eye and no corneal surgery in the fellow eye.


Methods: This prospective study was conducted on 28 eyes of 14 patients with FED who underwent DSAEK in one eye at least one year prior (DSAEK group) and no corneal surgery in the fellow eye (control group). Each eye was analyzed with the anterior segment optical coherence tomography, specular microscopy, and Scheimpflug imaging systems. Data were compared between the two groups.


Results: The mean age of the patients was 76.9 ± 7.0 years. There were no statistically significant differences in the mean central corneal thickness (CCT), central anterior chamber depth, anterior chamber angle parameters, cylinder and keratometry values between two groups (all P-values > 0.05). The paracentral corneal thickness, corneal volume, endothelial cell density, and hexagonal cell ratio measurements were statistically significantly higher in the DSAEK group than the control (all P-values < 0.05), and anterior chamber volume in the DSAEK group was significantly less than the control (P = 0.046). While posterior and total corneal densitometry values in the DSAEK group were statistically significantly lower than the control (P < 0.001 and P = 0.011, respectively), there were no statistically significant differences in the anterior or middle corneal densities (P = 0.108 and P = 0.134, respectively).


Conclusion: We found that total corneal densitometry value decreased in DSAEK group. Although DSAEK surgery did not affect the anterior chamber angle parameters, it reduced the anterior chamber volume and increased the corneal volume and paracentral corneal thickness due to the addition of the DSAEK graft.

Keywords:

Anterior Chamber Parameters, Corneal Densitometry, Corneal Thickness, Descemet Stripping Automated Endothelial Keratoplasty, DSAEK, Endothelial Cell, Fuchs Dystrophy

References
1. Elhalis H, Azizi B, Jurkunas UV. Fuchs endothelial corneal dystrophy. Ocul Surf 2010;8:173–184.

2. Hjortdal J, Ehlers N. Descemet’s stripping automated endothelial keratoplasty and penetrating keratoplasty for Fuchs’ endothelial dystrophy. Acta Ophthalmol 2009;87:310–314.

3. Price MO, Gorovoy M, Benetz BA, Price FW Jr, Menegay HJ, Debanne SM, et al. Descemet’s stripping automated endothelial keratoplasty outcomes compared with penetrating keratoplasty from the cornea donor study. Ophthalmology 2010;117:438–444.

4. Jun B, Kuo AN, Afshari NA, Carlson AN, Kim T. Refractive change after Descemet stripping automated endothelial keratoplasty surgery and its correlation with graft thickness and diameter. Cornea 2009;28:19–23.

5. Scorcia V, Matteoni S, Scorcia GB, Scorcia G, Busin M. Pentacam assessment of posterior lamellar grafts to explain hyperopization after Descemet’s stripping automated endothelial keratoplasty. Ophthalmology 2009;116:1651–1655.

6. Hindman HB, Huxlin KR, Pantanelli SM, Callan CL, Sabesan R, Ching SS, et al. Post-DSAEK optical changes: a comprehensive prospective analysis on the role of ocular wavefront aberrations, haze, and corneal thickness. Cornea 2013;32:1567–1577.

7. Terry MA, Shamie N, Chen ES, Phillips PM, Hoar KL, Friend DJ. Precut tissue for Descemet’s stripping automated endothelial keratoplasty: vision, astigmatism, and endothelial survival. Ophthalmology 2009;116:248– 256.

8. Nielsen E, Ivarsen A, Kristensen S, Hjortdal J. Fuchs’ endothelial corneal dystrophy: a controlled prospective study on visual recovery after endothelial keratoplasty. Acta Ophthalmol 2016;94:780–787.

9. Chen ES, Phillips PM, Terry MA, Shamie N, Friend DJ. Endothelial cell damage in Descemet stripping automated endothelial keratoplasty with the underfold technique: 6- and 12-month results. Cornea 2010;29:1022–1024.

10. Price MO, Bidros M, Gorovoy M, Price FW Jr, Benetz BA, Menegay HJ, et al. Effect on incision width on graft survival and endothelial cell loss after Descemet stripping automated endothelial keratoplasty. Cornea 2010;29:523–527.

11. Price MO, Gorovoy M, Price FW Jr, Benetz BA, Menegay HJ, Lass JH. Descemet’s stripping automated endothelial keratoplasty: three-year graft and endothelial cell survival compared with penetrating keratoplasty. Ophthalmology 2013;120:246–251.

12. Ang M, Mehta JS, Lim F, Bose S, Htoon HM, Tan D. Endothelial cell loss and graft survival after Descemet’s stripping automated endothelial keratoplasty and penetrating keratoplasty. Ophthalmology 2012;119:2239– 2244.

13. Alnawaiseh M, Rosentreter A, Prokosch V, Eveslage M, Eter N, Zumhagen L. Changes in corneal densitometry in patients with Fuchs endothelial dystrophy after endothelial keratoplasty. Curr Eye Res 2017;42:163–167.

14. Otri AM, Fares U, Al-Aqaba MA, Dua HS. Corneal densitometry as an indicator of corneal health. Ophthalmology 2012;119:501–508.

15. Arnalich-Montiel F, Hernández-Verdejo JL, Oblanca N, Muñoz- Negrete FJ, De Miguel MP. Comparison of corneal haze and visual outcome in primary DSAEK versus DSAEK following failed DMEK. Graefes Arch Clin Exp Ophthalmol 2013;251:2575– 2584.

16. Baratz KH, McLaren JW, Maguire LJ, Patel SV. Corneal haze determined by confocal microscopy 2 years after Descemet stripping with endothelial keratoplasty for Fuchs corneal dystrophy. Arch Ophthalmol 2012;130:868– 874.

17. Bahar I, Kaiserman I, Livny E, Slomovic A, Slomovic A. Changes in corneal curvatures and anterior segment parameters after Descemet stripping automated endothelial keratoplasty. Curr Eye Res 2010;35:961–966.

18. Terry MA, Straiko MD, Goshe JM, Li JY, Davis-Boozer D. Descemet’s stripping automated endothelial keratoplasty: the tenuous relationship between donor thickness and postoperative vision. Ophthalmology 2012;119:1988– 1996.

19. Singh R, Gupta N, Vanathi M, Tandon R. Corneal transplantation in the modern era. Indian J Med Res 2019;150:7–22.