Macromorphometric Study on Ciliary Body Location in Canine Eyes

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  • ICHIHARA Nobutsune
    Laboratory of Anatomy 1st, Azabu University, School of Veterinary Medicine
  • KIKUCHI Nobutaka
    Laboratory of Anatomy 1st, Azabu University, School of Veterinary Medicine
  • SAWADA Tsutomu
    Kawaguchi Veterinary Medical Center
  • KASEDA Misato
    Laboratory of Anatomy 1st, Azabu University, School of Veterinary Medicine
  • HONNMA Naomi
    Laboratory of Anatomy 1st, Azabu University, School of Veterinary Medicine
  • SHIBATA Shinnji
    Laboratory of Anatomy 1st, Azabu University, School of Veterinary Medicine
  • AMASAKI Hajime
    Laboratory of Veterinary Anatomy, Department of Veterinary Science, Nippon Veterinary and Animal Science University
  • ASARI Masao
    Laboratory of Anatomy 1st, Azabu University, School of Veterinary Medicine

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  • 犬眼球における毛様体の形態計測学的検討

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This macroscopic study firstly examined the precise locational information of the canine ciliary body, i.e., the ciliary crown and the ciliary ring in the beagle. The safe and effective transscleral laser photocoagulation technique requires the accurate location of the ciliary body. In both sides of the eyeball in 10 beagle dogs, the width of the ciliary ring and the distance from the limbus to the ciliary ring were measured with calipers using a stereomicroscope at the 8 points. The widest portion of ciliary body was found at the dorsal to ventro-temporal area of the lateral canthus (lateral portion of the eyelid; ear side). In contrast, the narrowest portion was seen at the ventro-nasal to nasal area of the medial canthus (medial portion of the eyelid; nasal quadrants). Use of transscleral photocoagulation at the present narrowest area of ciliary body may carry a high risk of destruction of the optic portion of retina.<br>

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