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Home / Equine Research Bank / Vet Ophthalmol / Retrospective evaluation of phacoemulsification and aspirati...
Veterinary ophthalmology2014; 17 Suppl 1; 160-167; doi: 10.1111/vop.12185

Retrospective evaluation of phacoemulsification and aspiration in 41 horses (46 eyes): visual outcomes vs. age, intraocular lens, and uveitis status.

Abstract: To determine the effect of age at the time of surgery, intraocular lens (IOL) placement, and presence of chronic uveitis on visual outcome after phacoemulsification and aspiration (PA) of cataracts in horses. Methods: Records of 41 horses (46 eyes) receiving unilateral or bilateral PA. Methods: Retrospective analysis of horses receiving unilateral or bilateral PA at the NCSU-VTH (35 horses, 39 eyes) and in Northern Italy (six horses, seven eyes) was performed. Visual status at last follow-up was compared to age at the time of surgery, IOL status, and presence of chronic uveitis preoperatively. Seven horses with chronic uveitis also underwent placement of a suprachoroidal cyclosporine implant. Clinical ophthalmic examinations and owner questionnaires were used to evaluate visual status. Results: Twenty-one of 46 eyes (46%) received an IOL and 12 of 46 eyes (26%) had chronic uveitis. Overall, 25 of 46 eyes (54%) were visual at last follow-up (mean 35.1 ± 34.8 months). Age (mean 8.6 ± 7.7 years) was not significantly associated with visual outcome. Fourteen of 21 (67%) pseudophakic eyes and 11 of 25 (44%) aphakic eyes were visual at last follow-up (P = 0.342). Eyes with preoperative chronic uveitis were significantly less likely to be visual (3 of 12 eyes [25%]) than horses without preoperative chronic uveitis (22 of 34 eyes [65%]) (P = 0.023). Conclusions: Horses with chronic uveitis had significantly less favorable visual outcome after PA. Older age at surgery and IOL use were not associated with poor visual outcome.
© 2014 American College of Veterinary Ophthalmologists.
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Publication Date: 2014-05-26 PubMed ID: 24862225DOI: 10.1111/vop.12185Google Scholar: Lookup
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  • Journal Article

Summary

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The research article evaluates the impact of factors like age, intraocular lens placement, and chronic uveitis on the visual outcomes in horses post cataract surgery through phacoemulsification and aspiration. The study concludes chronic uveitis affected visual outcomes negatively, while age and intraocular lens use did not show an association with poor visual results.

Methodology

  • The study encompasses 41 horses, totaling 46 eyes that had undergone unilateral or bilateral phacoemulsification and aspiration (PA) for cataract removal.
  • The records were retrospectively examined from two facilities: NCSU-VTH with 35 horses (39 eyes) and Northern Italy with six horses (seven eyes).
  • Visual status of the horses at the last follow-up was evaluated against their age at the time of surgery, intraocular lens (IOL) placement, and preoperative presence of chronic uveitis.
  • For seven horses with chronic uveitis, a suprachoroidal cyclosporine implant was also placed.
  • Data on visual status was gathered through clinical ophthalmic examinations and owner questionnaires.

Results

  • Twenty-one of the forty-six eyes (around 46%) had received an IOL, while 26% of the eyes had chronic uveitis.
  • About 54% of the eyes were visual at the last follow-up (mean 35.1 ± 34.8 months).
  • The study found no significant correlation between visual outcomes and horse age at the time of surgery, which had a mean age of 8.6 ± 7.7 years.
  • Of the eyes with an IOL (pseudophakic eyes), 67% were visual at the last follow-up, compared to 44% of the eyes without an IOL (aphakic eyes). However, this difference was not statistically significant (P = 0.342).
  • Eyes with preoperatively diagnosed chronic uveitis were significantly less likely to be visual at the last follow-up (25% versus 65% in horses without preoperative chronic uveitis, P = 0.023).

Conclusion

  • The study concludes that horses with chronic uveitis had significantly poorer visual outcomes after PA.
  • It was determined that older age at the time of surgery and the use of an intraocular lens (IOL) were not associated with poor visual outcomes post operation.

Cite This Article

APA
Edelmann ML, McMullen R, Stoppini R, Clode A, Gilger BC. (2014). Retrospective evaluation of phacoemulsification and aspiration in 41 horses (46 eyes): visual outcomes vs. age, intraocular lens, and uveitis status. Vet Ophthalmol, 17 Suppl 1, 160-167. https://doi.org/10.1111/vop.12185

Publication

Veterinary ophthalmology
ISSN: 1463-5224
NlmUniqueID: 100887377
Country: England
Language: English
Volume: 17 Suppl 1
Pages: 160-167

Researcher Affiliations

Edelmann, Michele L
  • College of Veterinary Medicine, North Carolina State University, 1060 William Moore Drive, Raleigh, NC, 27607, USA; College of Veterinary Medicine, Cornell University Hospital for Animals, 930 Campus Road, Ithaca, NY, 14853, USA.
McMullen, Richard
    Stoppini, Riccardo
      Clode, Alison
        Gilger, Brian C

          MeSH Terms

          • Age Factors
          • Animals
          • Cataract / veterinary
          • Female
          • Horses
          • Lenses, Intraocular / veterinary
          • Male
          • Phacoemulsification / adverse effects
          • Phacoemulsification / veterinary
          • Postoperative Complications / veterinary
          • Retrospective Studies
          • Treatment Outcome
          • Uveitis / etiology
          • Uveitis / veterinary
          • Vision Disorders / etiology
          • Vision Disorders / veterinary

          Citations

          This article has been cited 6 times.
          1. Hefner EM, Stoppini R, McMullen RJ Jr. Treatment of Iris Hypoplasia Using Semiconductor Diode Laser in the Horse Under Standing Sedation. Case Rep Vet Med 2025;2025:4021047.
            doi: 10.1155/crve/4021047pubmed: 40166363google scholar: lookup
          2. Kalinovskiy A, Leser S, Ehrle A, Reese S, Jones S, Gerhards H. Phacoemulsification Combined with Pars Plana Vitrectomy: Outcome in Horses with Acquired Cataracts Associated with Uveitis. Animals (Basel) 2024 Apr 16;14(8).
            doi: 10.3390/ani14081192pubmed: 38672339google scholar: lookup
          3. Ing S. Ocular and facial porcupine quills in a miniature horse. Can Vet J 2022 Jul;63(7):747-750.
            pubmed: 35784768
          4. Cerreta AJ, McMullen RJ Jr, Scott HE, Ringenberg JD, Hempstead JE, DeVoe RS, Loomis MR, Minter LJ. Bilateral Phacoemulsification in an African Elephant (Loxodonta africana). Case Rep Vet Med 2019;2019:2506263.
            doi: 10.1155/2019/2506263pubmed: 31380140google scholar: lookup
          5. Fenollosa-Romero E, Jeanes E, Freitas I, Enache AE, Lockhart R, Fleming L, Knott TNL, Dawson C, Smith K, Busse C. Outcome of phacoemulsification in 71 cats: A multicenter retrospective study (2006-2017). Vet Ophthalmol 2020 Jan;23(1):141-147.
            doi: 10.1111/vop.12699pubmed: 31328856google scholar: lookup
          6. Meister U, Görig C, Murphy CJ, Haan H, Ohnesorge B, Boevé MH. Intraocular lens power calculation for the equine eye. BMC Vet Res 2018 Apr 3;14(1):123.
            doi: 10.1186/s12917-018-1448-6pubmed: 29615113google scholar: lookup
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