©2021-2033. All
Rights Reserved. Online Journal of Veterinary Research . You may
not store these pages in any form except for your own personal use. All other
usage or distribution is illegal under international copyright treaties. Permission to use any of these pages in any other way besides the before
mentioned must be gained in writing from the publisher. This
article is exclusively copyrighted in its entirety to OJVR. This article may be
copied once but may not be, reproduced or re-transmitted without the express permission of the editors. This journal
satisfies the refereeing requirements (DEST) for the Higher Education Research
Data Collection (Australia). Linking:To link to
this page or any pages linking to this page you must link directly to this page only here rather than put up your own page.
OJVRTM
Online Journal of
Veterinary Research©
Volume 26 (8): 587-592, 2022.
Effect of ocular lipid layer on aqueous layer in
brachycephalic dogs evaluated
by interferometry, meibomian gland and Schirmer tear tests
Paulo Henrique
Sampaio da Silva* (DVM), Layla Karolaynne Souza Cruz
(DVM),
Brendha Mendes
Ferreira (DVM), Mário Sérgio Almeida Falcão
(DVM, PhD)
¹Veterinary Center of Vision, Cond. San Diego, lt
385, Jardim Botanico, Brasília, Brazil.
*Corresponding author: phss96silva@gmail.com
ABSTRACT
Silva PHS, Cruz LKS, Ferreira BM,
Falcão MSA Effect of ocular lipid layer on aqueous layer in
brachycephalic dogs evaluated by interferometry, meibomian gland and Schirmer tear tests, Onl J Vet Res., 26 (8): 587-592,
2022. Status of aqueous pre-corneal layer can be
evaluated by Schirmer Tear Test-1. However, the lipid
layer which is thought to
prevent evaporation
and loss of fluid from the
aqueous layer can only be tested
indirectly. We report effect of lipid layer on ocular aqueous layer in 18 brachycephalic dogs (36 eyes) by eye surface interferometry, Schirmer tear tests and loss of meibobian gland area. Dogs were first subjected to
ophthalmic examination, interferometry patterns and meibography by
ocular surface analysis. We found significant (p <
0.05) difference for Schirmer tear tests by interferometry of eye surface
between dogs measuring 15-30nm which secreted 18.33 ± 5.61mm/min (CI 95%, 14.77
: 21.90) and 61-100nm yielding
24.67 ± 4.67mm/min (CI 95% 21.69 : 27.64). Loss of Meibomian gland area was associated with lower interferometry grades (n=20). 22 eyes presented meibomian area of loss of grade 2. Results suggest that pre-corneal lipid layers and meibomian glands may prevent loss and evaporation of aqueous layer in brachycephalic breeds.
Keywords:
surface, eye, lipid, aqueous, ophthalmology.
FULL-TEXT (SUBSCRIBE OR
PURCHASE TITLE)