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Case Report


Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report

Boon Nie Yeoh, Nadzariah Cheng Binti Abdullah, Muhamad Faizal Bin Hahlan, Nur Nabila Sarkawi, Siew Te Wong.


Abstract
Background:
A 23-year-old female Bornean sun bear presented with symptoms of right eye discomfort, including frequent blinking and scratching. Ophthalmic examination revealed a dilated right pupil, anterior lens displacement, and early-stage bilateral cataracts. Corneal edema developed in the right eye.

Case Description:
An intracapsular lens extraction was performed to remove the right dislocated lens and ruptured capsule 3 weeks later. Postoperative care included topical eye drops, oral anti-inflammatory drugs, and antibiotics. Mild eyelid swelling, ocular rubbing, and decreased appetite were noted during the first postoperative week. By day 18, the eyelid swelling had resolved and the eye was fully open; however, a persistent corneal opacity rendered the right eye blind.

Conclusion:
This case illustrates the complexities of ophthalmic surgery in a Bornean sun bear, particularly in managing postoperative complications and visual outcomes. This underscores the importance of early detection and timely surgical intervention in wildlife medicine to improve prognosis and preserve ocular health.

Key words: Cataract; Eye surgery; Intracapsular lens extraction; Lens luxation; Sun bear.


 
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How to Cite this Article
Pubmed Style

Yeoh BN, Abdullah NCB, Hahlan MFB, Sarkawi NN, Wong ST. Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report. Open Vet. J.. 2025; 15(11): 6088-6094. doi:10.5455/OVJ.2025.v15.i11.66

Web Style

Yeoh BN, Abdullah NCB, Hahlan MFB, Sarkawi NN, Wong ST. Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report. https://www.openveterinaryjournal.com/?mno=262279 [Access: November 30, 2025]. doi:10.5455/OVJ.2025.v15.i11.66

AMA (American Medical Association) Style

Yeoh BN, Abdullah NCB, Hahlan MFB, Sarkawi NN, Wong ST. Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report. Open Vet. J.. 2025; 15(11): 6088-6094. doi:10.5455/OVJ.2025.v15.i11.66


Vancouver/ICMJE Style

Yeoh BN, Abdullah NCB, Hahlan MFB, Sarkawi NN, Wong ST. Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report. Open Vet. J.. (2025), [cited November 30, 2025]; 15(11): 6088-6094. doi:10.5455/OVJ.2025.v15.i11.66


Harvard Style

Yeoh, B. N., Abdullah, . N. C. B., Hahlan, . M. F. B., Sarkawi, . N. N. & Wong, . S. T. (2025) Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report. Open Vet. J., 15 (11), 6088-6094. doi:10.5455/OVJ.2025.v15.i11.66


Turabian Style

Yeoh, Boon Nie, Nadzariah Cheng Binti Abdullah, Muhamad Faizal Bin Hahlan, Nur Nabila Sarkawi, and Siew Te Wong. 2025. Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report. Open Veterinary Journal, 15 (11), 6088-6094. doi:10.5455/OVJ.2025.v15.i11.66


Chicago Style

Yeoh, Boon Nie, Nadzariah Cheng Binti Abdullah, Muhamad Faizal Bin Hahlan, Nur Nabila Sarkawi, and Siew Te Wong. "Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report." Open Veterinary Journal 15 (2025), 6088-6094. doi:10.5455/OVJ.2025.v15.i11.66


MLA (The Modern Language Association) Style

Yeoh, Boon Nie, Nadzariah Cheng Binti Abdullah, Muhamad Faizal Bin Hahlan, Nur Nabila Sarkawi, and Siew Te Wong. "Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report." Open Veterinary Journal 15.11 (2025), 6088-6094. Print. doi:10.5455/OVJ.2025.v15.i11.66


APA (American Psychological Association) Style

Yeoh, B. N., Abdullah, . N. C. B., Hahlan, . M. F. B., Sarkawi, . N. N. & Wong, . S. T. (2025) Management of anterior lens luxation in a bornean sun bear (Helarctos malayanus euryspilus): A case report. Open Veterinary Journal, 15 (11), 6088-6094. doi:10.5455/OVJ.2025.v15.i11.66


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