Evaluation of ocular surface parameters before and after cryo- and laser therapy for distichiasis in dogs: A pilot study

V. Zwiauer-Wolfbeisser; A. Tichy; B. Nell

doi:10.1111/vop.13275

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Title (eng)

Evaluation of ocular surface parameters before and after cryo- and laser therapy for distichiasis in dogs: A pilot study

Author

V. Zwiauer-Wolfbeisser

University of Veterinary Medicine Vienna

A. Tichy

University of Veterinary Medicine Vienna

B. Nell

University of Veterinary Medicine Vienna

Abstract (eng)

Objective The aim of this pilot study was to establish a satisfactory, scientific approach to effectively compare quantitative measurements of various ocular surface parameters before and after surgical treatment in dogs suffering from distichiasis. Methods An ophthalmic examination was conducted on 12 dogs (23 eyes) before and after surgical treatments for distichiasis, at four different time points, (t0 = before surgery, t1 = 1–2 h after surgery, t2 = 1 week after surgery, t3 = 1 month after surgery, and t4 = 6 months after surgery) between 2021 and 2022, and analyzed retrospectively. The examination included Schirmer tear test-1 (STT-1), interferometry, noninvasive tear film break-up time (NIBUT), tear meniscus size (TMS), and meibography. Results No statistically significant changes were found in STT-1 (t0: 22.2 ± 6.5 mm, t2: 22.5 ± 5.7 mm, t3: 20.8 ± 5.1 mm, and t4: 22.6 mm ± 4.8 mm) before and after surgery. Mean interferometry scores showed a slight, not statistically significant, decrease from t0 to t3 and t4 (t0: 2.1 ± 0.8, t1: 2.1 ± 0.7, t2: 2.1 ± 0.9, t3: 1.8 ± 0.6, and t4: 1.9 ± 1.1). Mean NIBUT did not change significantly between time points (t0: 3.9 ± 1.3 s, t1: 4.0 ± 1.3 s, t2: 4.0 ± 1.4 s, t3: 3.5 ± 0.7 s, and t4: 3.5 ± 0.9 s). TMS showed a slight, not statistically significant increase (t0: 0.5 ± 0.3 mm, t1: 0.5 ± 0.3, t2: 0.5 ± 0.3 mm, t3: 0.6 ± 0.2 mm, and t4: 0.7 ± 0.3 mm). There were no changes in the gross morphology of the meibomian glands (MG). Conclusion This pilot study could not detect a negative effect of different forms of treatment of distichiasis on the precorneal tear film parameters in dogs. However, due to the study's retrospective nature and small sample size, no definitive conclusion can be drawn regarding the changes at the different time points.

Keywords (eng)

AnimalsDogsPilot ProjectsDog Diseases SurgeryFemaleMaleRetrospective StudiesLaser Therapy VeterinaryTearsCryosurgery Veterinary

Type (eng)

journal article

Language

[eng]

Persistent identifier

https://phaidra.vetmeduni.ac.at/o:4189

DOI

10.1111/vop.13275

Is in series

Title (eng)