Related Experiment Video
Updated: Jul 16, 2026

07:52
Conjunctival Commensal Isolation and Identification in Mice
Published on: May 1, 2021
[Conjunctival microbiota in patients with ocular allergy]
Alexandre Mattoso Libório1, Maria Cristina Nishiwaki-Dantas, Lycia Mara Jenne Mimica
1Departamento de Oftalmologia, Faculdade de Ciências Médicas, Santa Casa de São Paulo, São Paulo, SP.
Arquivos Brasileiros De Oftalmologia
|March 9, 2007
Summary
Patients with ocular allergy showed significantly higher rates of conjunctival aerobic microbiota compared to controls. This suggests a potential link between bacterial presence and allergic eye conditions.
Area of Science:
- Ophthalmology
- Microbiology
- Immunology
Context:
- Ocular allergy affects a significant portion of the population, leading to discomfort and potential complications.
- The role of microbial colonization in the pathogenesis of ocular allergy is not fully understood.
Purpose:
- To investigate the prevalence of conjunctival aerobic microbiota in patients diagnosed with ocular allergy.
- To compare the findings with a control group of individuals without ocular allergy.
Summary:
- A study involving 133 patients (63 with allergic conjunctivitis, 70 controls) found positive bacterial cultures in 47.7% of allergy patients versus 8.6% of controls.
- Seven bacterial species were identified in the allergic conjunctivitis group, and four in the control group.
- Statistical analysis confirmed a significant association between the presence of conjunctival aerobic microbiota and allergic conjunctivitis.
Impact:
- This research highlights a higher frequency of bacterial microbiota in individuals with ocular allergy.
- Findings may inform future diagnostic and therapeutic strategies for allergic eye diseases.
Related Concept Videos
Microbiome of the Eye
The human eye has a specialized microbiota that reflects its unique anatomical and immunological environment. This low-biomass microbial community predominantly colonizes the conjunctiva and eyelid margins, playing a vital role in ocular surface homeostasis and defense. Despite its proximity to the richly colonized facial skin, the ocular surface maintains a distinct microbial profile due to continuous mechanical and biochemical defense mechanisms.The conjunctival surface hosts fewer microbial...
Microbiota of the Respiratory Tract
The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more like...
The Skin Microbiota
The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
Microbiota of the Urogenital Tract
The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...
Allergic Reactions
Overview

