Characterization of the normal microbiota of the ocular surface

Caracterización de la microbiota conjuntival transitoria y residente de adultos jóvenes

“…(5,6). El género Staphylococcus es el más prevalente en el ojo, con porcentajes que van entre 81,5 y 32,6 %, de los cuales las especies más frecuentes son Staphylococcus coagulasa negativas (6)(7)(8)(9).…”

“…Al nacer predominan en el ojo del individuo S. epidermidis, S. aureus, Diphtheroides, Streptococcus viridans, Bacillus haemophilus, Bacteroides, Propionibacterium y Lactobacillus, similar a la microbiota del cérvix; dos días después del nacimiento S. epidermidis, S. aureus y E. coli son más comúnmente aislados (4,6,10), y en los niños y adultos los más frecuentes son Staphylococcus coagulasa negativos, Diphteroides, Propionibacterium y Streptococcus -estos últimos se presentan con mayor regularidad en los niños- (6,11,12).…”

Bacterial culture and antibiotic sensitivity from the ocular conjunctiva of horses

“…In different animal species, including horses (ANDREW et al, 2003;JOHNS et al, 2011), mules (TAMARZADEH & ARAGHI-SOOREH, 2014), donkeys (FOTI et al, 2013), sheep (BONELLI et al, 2014), dogs (PRADO et al, 2005) and rabbits (ORIÁ et al, 2014). Bacterial population often isolated from healthy eyes is composed of gram-positive bacteria, although strains of methicillin-resistant to Staphylococcus (MRS) and gran negative strains, have also been identified (SANTOS et al, 2009;JOHNS et al, 2011;WILLCOX, 2013;MOUNEY et al, 2013). Some eye infections, however, can be caused by resident microorganisms, which become potentially pathogenic after their virulence is increased by external factors, such as trauma, stress, aging and reduction in commensal microbiota (COGEN et al 2008;WILLCOX, 2013).…”

“…Bacterial population often isolated from healthy eyes is composed of gram-positive bacteria, although strains of methicillin-resistant to Staphylococcus (MRS) and gran negative strains, have also been identified (SANTOS et al, 2009;JOHNS et al, 2011;WILLCOX, 2013;MOUNEY et al, 2013). Some eye infections, however, can be caused by resident microorganisms, which become potentially pathogenic after their virulence is increased by external factors, such as trauma, stress, aging and reduction in commensal microbiota (COGEN et al 2008;WILLCOX, 2013). Horses are probably more susceptible to corneal lesions, compared to other species, since they have bulging eyes susceptible to trauma associated with their physical activity and the environment where they live (PISANI et al, 1997;WADA et al, 2010).…”

Ocular Microbiota

“…Only a subspecies design could be developed in studies conducted on ocular surface flora using traditional culture methods (10,11). Significant differences were found between the results of microbiological analysis of ocular fluorescence and results of conventional culture methods using metagenomic approaches (12)(13)(14).…”