Ocular abnormalities in the Icelandic horse with a focus on equine recurrent uveitis: 112 Icelandic horses living in Denmark and 26 Icelandic horses living in the United States
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Ocular abnormalities in the Icelandic horse with a focus on equine recurrent uveitis : 112 Icelandic horses living in Denmark and 26 Icelandic horses living in the United States. / Henriksen, Michala de Linde; Dwyer, Ann E.; Krarup Nielsen, Rikke; Bäcklund, Sofia; Dahlmann Christensen, Nanna; Holberg Pihl, Tina.
In: Veterinary Ophthalmology, Vol. 25, No. 3, 2022, p. 194-208.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Ocular abnormalities in the Icelandic horse with a focus on equine recurrent uveitis
T2 - 112 Icelandic horses living in Denmark and 26 Icelandic horses living in the United States
AU - Henriksen, Michala de Linde
AU - Dwyer, Ann E.
AU - Krarup Nielsen, Rikke
AU - Bäcklund, Sofia
AU - Dahlmann Christensen, Nanna
AU - Holberg Pihl, Tina
N1 - Publisher Copyright: © 2021 American College of Veterinary Ophthalmologists
PY - 2022
Y1 - 2022
N2 - Purpose: To describe the most common ocular abnormalities in the Icelandic horse with focus on equine recurrent uveitis (ERU) and association between ocular abnormalities and summer eczema and coat colors. Methods: A descriptive cross-sectional study. A complete physical and ophthalmic examination as well as measurement of serum titers for Leptospira serovariants was performed on Icelandic horses from Denmark (DK) and the United States (USA). Results: One hundred and twelve Icelandic horses living in DK and 26 Icelandic horses living in the United States were included in this study (total of 138 horses, 274 eyes). The three most common ocular abnormalities were follicular conjunctivitis (55.8%, 153/274 eyes), cataracts (27.4%, 75/274 eyes), and multifocal chorioretinopathy (“bullet holes”; 19%, 52/274 eyes). The prevalence for ERU among Icelandic horses aged “eight years and older” was 8% (6/75 horses). The “insidious ERU” type was found in 83% of the ERU cohort (5/6 horses), while “classic ERU” was found in 17% (1/6 horses). A correlation between ERU and cataracts was found in the population (p <.01). Leptospiral serology results were not associated with ERU in either DK or US-Icelandic horses (p = 1.00, p = 1.00, respectively). ERU was not associated with summer eczema (p =.49), and no coat colors were associated with the ocular abnormalities found in the Icelandic horse (all p-values >.05). Conclusion: Follicular conjunctivitis, cataracts, and multifocal chorioretinopathy were the three most common ocular abnormalities findings. Icelandic horses who were 8 years or older had an 8% prevalence for ERU. Summer eczema and coat color were not associated with evidence of ERU or other ocular abnormalities.
AB - Purpose: To describe the most common ocular abnormalities in the Icelandic horse with focus on equine recurrent uveitis (ERU) and association between ocular abnormalities and summer eczema and coat colors. Methods: A descriptive cross-sectional study. A complete physical and ophthalmic examination as well as measurement of serum titers for Leptospira serovariants was performed on Icelandic horses from Denmark (DK) and the United States (USA). Results: One hundred and twelve Icelandic horses living in DK and 26 Icelandic horses living in the United States were included in this study (total of 138 horses, 274 eyes). The three most common ocular abnormalities were follicular conjunctivitis (55.8%, 153/274 eyes), cataracts (27.4%, 75/274 eyes), and multifocal chorioretinopathy (“bullet holes”; 19%, 52/274 eyes). The prevalence for ERU among Icelandic horses aged “eight years and older” was 8% (6/75 horses). The “insidious ERU” type was found in 83% of the ERU cohort (5/6 horses), while “classic ERU” was found in 17% (1/6 horses). A correlation between ERU and cataracts was found in the population (p <.01). Leptospiral serology results were not associated with ERU in either DK or US-Icelandic horses (p = 1.00, p = 1.00, respectively). ERU was not associated with summer eczema (p =.49), and no coat colors were associated with the ocular abnormalities found in the Icelandic horse (all p-values >.05). Conclusion: Follicular conjunctivitis, cataracts, and multifocal chorioretinopathy were the three most common ocular abnormalities findings. Icelandic horses who were 8 years or older had an 8% prevalence for ERU. Summer eczema and coat color were not associated with evidence of ERU or other ocular abnormalities.
KW - cataracts
KW - equine recurrent uveitis
KW - follicular conjunctivitis
KW - icelandic horse
KW - ocular abnormalities
KW - ophthalmology
U2 - 10.1111/vop.12961
DO - 10.1111/vop.12961
M3 - Journal article
C2 - 34890112
AN - SCOPUS:85120900954
VL - 25
SP - 194
EP - 208
JO - Veterinary Ophthalmology
JF - Veterinary Ophthalmology
SN - 1463-5216
IS - 3
ER -
ID: 287703189