Density of corneal endothelial cells, corneal thickness, and corneal diameters in normal eyes of llamas and alpacas

American Journal of Veterinary Research
Stacy E AndrewDavid E Anderson

Abstract

To determine density of corneal endothelial cells, corneal thickness, and corneal diameters in normal eyes of llamas and alpacas. 36 llamas and 20 alpacas. Both eyes were examined in each camelid. Noncontact specular microscopy was used to determine density of corneal endothelial cells. Corneal thickness was measured, using ultrasonographic pachymetry. Vertical and horizontal corneal diameters were measured, using Jameson calipers. Values did not differ significantly between the right and left eyes from the same camelid. There was no significant effect of sex on density of corneal endothelial cells or corneal thickness in either species. Mean density of endothelial cells was 2,669 cells/mm2 in llamas and 2,275 cells/mm2 in alpacas. Density of endothelial cells decreased with age in llamas. Polymegathism was observed frequently in both species. Mean corneal thickness was 608 microm for llamas and 595 microm for alpacas. Corneal thickness and density of endothelial cells were negatively correlated in llamas. Older (> 36 months old) llamas had significantly larger horizontal and vertical corneal diameters than younger llamas, and older alpacas had a significantly larger vertical corneal diameter than younger alpacas. Density of co...Continue Reading

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Citations

Apr 10, 2002·Veterinary Ophthalmology·Juliet R Gionfriddo, Michael Blair
Feb 28, 2007·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Alfonso Rodriguez-AlvaroCovadonga Talavera-Cañete
Apr 26, 2008·Veterinary Ophthalmology·Fabiano Montiani-FerreiraRicardo G D'O C Vilani
Aug 31, 2006·Veterinary Ophthalmology·Gwendolyn L Lynch, Julius L Brinkis
Jun 15, 2007·Veterinary Ophthalmology·Gwendolyn L LynchTiffany Blocker
Jun 15, 2006·Veterinary Ophthalmology·Fabiano Montiani-FerreiraHeloisa Helena Abil Russ
Dec 3, 2008·Veterinary Ophthalmology·Fabiano Montiani-FerreiraRogério R Lange
Jan 13, 2018·Journal of Avian Medicine and Surgery·Karin WertherRüdiger Korbel
Apr 11, 2018·Clinical Case Reports·Alexandre GuyonnetSabine Chahory

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