Ultrasonographic aspects and biometry of Striped owl’s eyes (Rhinoptynx clamator)

Abstract

Ocular ultrasound aspects and biometric values of the Striped owl are reported. The study's results provide means for various ocular measurements. The ultrasound is an easy and safe exam to be performed in the Striped owl's eyes.

OPHTHALMIC REFERENCE VALUES AND LESIONS IN TWO CAPTIVE POPULATIONS OF NORTHERN OWLS: GREAT GREY OWLS (STRIX NEBULOSA) AND SNOWY OWLS (BUBO SCANDIACUS)

“…The pecten height and width in snowy owls were comparable to those of great horned owls, red-tailed hawks, and turkey vultures. 21,30 Corresponding significant differences between the two species in anterior chamber depth, axial lens thickness, and axial globe length were also noted. In addition, the two owl species investigated seem to have biometric measurements that are closer to those of birds within the same genus.…”

“…2). 6,13,30 Therefore, previous normal pecten biometry and blood flow obtained with ocular ultrasound can aid in determining the integrity of the pecten after trauma and thus may help in determining prognosis. The pecten is thought to nourish the retina and control the pH of the vitreous; therefore, damage to the pecten could potentially result in retinal changes.…”

“…Ocular ultrasonography has previously been demonstrated 13,14,21,30 to be an effective, safe, and noninvasive technique for evaluation of the avian globe. Ultrasonography is especially beneficial when intraocular examination is not possible as a result of corneal edema, hyphema, cataracts, or vitreous hemorrhage.…”

“…Likewise, prompt ocular ultrasound would be useful in visualizing retinal detachments in cases of head trauma, in which hyphema makes early assessment often challenging, and echobiometric measurements may be useful in identifying such abnormalities as lens luxation-subluxation and pecten lesions. Previous data 4,[14][15][16]21,28,30,31 collected from various other raptor species have shown there to be a difference in ocular parameters among the various orders, families, and species, thus demonstrating the importance of speciesspecific ocular reference values.…”

Ecobiometria ocular de cães glaucomatosos

“…Também é indicado para avaliação da vasculatura ocular, massas intraorbitárias ou retrobulbares, corpos estranhos ou ainda quando há a necessidade de informações adicionais em casos de processos neoplásicos. Trata-se de uma técnica rápida e segura, que pode ser empregada sem sedação ou anestesia, ou seja, com o paciente acordado (Gelatt-Nicholson et al, 1999;Gonzalez et al, 2001;Bentley et al, 2003;Dietrich, 2007;Hernández-Guerra et al, 2007;Spaulding, 2008;Book et al, 2008;Gonçalves et al, 2009;Gonçalves et al, 2010;Squarzoni et al, 2010;Squarzoni, 2011;Baraldi et al, 2012).…”