In vivo analysis and comparison of anterior segment structures of both eyes in unilateral Fuchs’ uveitis syndrome
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To compare corneal endothelial cell density (ECD), iris stromal thickness (IST), iris pigment epithelium optical density (IPE OD), and Schlemm’s canal (SC) measurements in patients having unilateral Fuchs’ uveitis syndrome (FUS).
This is a randomized, prospective study. Currently, diagnosed unilateral FUS and phakic cases were defined to be the inclusion criteria to the study. The specular microscope was used to measure ECD. Anterior segment images were acquired by using SD-OCT. The images were extracted and uploaded to the ImageJ program for further analysis. Two blinded investigators analyzed the IST, IPE OD, and SC area in both healthy (N) and affected eyes (FUS) and the comparative analysis was made by using SPSS program.
Of twenty-one participants, 13 were female (62%). The mean age of the participants was 30 ± 9 (18–47) years. ECD was 2228 ± 365 and 2513 ± 209 cells/mm2 in the FUS and N, respectively (p < 0,001). In FUS, the mean nasal and temporal (n-t) IST was measured as 380 ± 44 and 347 ± 41 μm, compared to 393 ± 61 and 355 ± 62 μm in N, respectively (p = 0.3 and p = 0.4 respectively). The mean n-t IPE OD was measured as 1110 ± 499 and 937 ± 370 in FUS, compared to 1147 ± 528 and 1267 ± 428 in N, respectively (p = 0.008 temporal). The mean n-t SC area was measured as 5479 ± 1951 and 5624 ± 2722 μm2 in FUS, compared to 5736 ± 2574 and 5633 ± 1835 μm2 in N, respectively (p = 0.9 and p = 0.7 respectively).
Decreased ECD in FUS may lead to serious complications after cataract surgery. Temporal IPE depigmentation occurs prior to the nasal side in FUS.
KeywordsFuchs’ uveitis syndrome Iris pigment epithelium Schlemms’ canal Iris stromal thickness Corneal endothelium cell density Anterior segment spectral domain optical coherence tomography
Special thanks are given to Tuba, my beloved friend, for editing our manuscript.
Availability of data and materials
The data supporting our findings can be found at the Van Yuzuncu Yil University, Dursun Odabas Faculty of Medicine, Ophthalmology Department, Uveitis section secretary.
M.D.O and F.K performed the data collection; M.D.O and M.B were involved in planning and supervised the work; M.D.O, F.K, M.B, E.S, and S.T processed the experimental data, performed the analysis, drafted the manuscript, and designed the figures. All authors discussed the results and commented on the manuscript.
Compliance with ethical standards
Ethics approval and consent to participate
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Van Yuzuncu Yil University, Dursun Odabas Faculty of Medicine, and Surgical and Pharmaceutical Research Ethics Board.
Consent to publish
Written informed consent for publication was obtained from all of the participants.
Conflict of interest
The authors declare that they have no conflict of interest.
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