A Study On The Microbial Flora In The Spectacles Used By Medical Students In A Tertiary Care Teaching Hospital In Puducherry

Spectacles, widely utilized for vision correction, are often in direct contact with facial skin and environmental surfaces, rendering them potential reservoirs of microbial contamination.Wherever the exposure to pathogens is frequent, the role of this issue is noticeable in medical environments, fomites in health care-associated infections (HAIs) is welldocumented.The objective of this study was to investigate the spectrum of microbial flora colonizing the surfaces of spectacles used by medical students and to analyze the association between pathogenic and commensal microbes isolated.Samples were collected from 264 medical students' spectacles in a tertiary care hospital using sterile swabs, ensuring proper aseptic techniques.These samples were cultured on nutrient agar, blood agar, MacConkey agar, and Sabouraud dextrose agar to facilitate the growth of bacteria and fungi, respectively.Bacterial isolates were identified using Gram staining and an array of biochemical tests, including catalase, coagulase, oxidase, and carbohydrate fermentation assays.Fungal identification was conducted using lactophenol cotton blue (LPCB) staining and germ tube testing to detect Candida spp.Results revealed the presence of a diverse array of microbes, including Staphylococcus, Pseudomonas, Escherichia coli, and Candida.Notably, pathogenic organisms such as E. coli and Aspergillus were frequently isolated, raising concerns about the potential role of spectacles as vectors for HAIs.Commensal flora, such as Micrococci and Candida, was also identified, emphasizing the continuous interplay between resident and transient microbiota.This study indicates the significance of regular sterilization of spectacles, particularly in clinical settings where microbial colonization poses a significant risk to both users and patients.Implementing regular cleaning protocols and educating health-care workers about hygiene practices may substantially mitigate the risk of spectacles serving as reservoirs for microbial transmission.