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Related Concept Videos

Microbiome of the Eye01:22

Microbiome of the Eye

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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...
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Infectious keratitis associated with contact lens wear: REGINFECOR multicenter study.

E Ispizua Mendivil1, J A Durán de la Colina2

  • 1Departamento de Oftalmología, Hospital de Urduliz, Urduliz, Bizkaia, Spain.

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|April 8, 2024
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Summary

Microbial keratitis (MK) from contact lens (CL) wear primarily impacts young women in Spain, often linked to poor hygiene and overnight wear. Pseudomonas aeruginosa infections indicate more severe outcomes and higher transplant needs.

Keywords:
Contact lensesEpidemiologyEpidemiologíaInfectious keratitisLentes de contactoMicrobiologyMicrobiologíaPseudomonas aeruginosaQueratitis infecciosas

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Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Epidemiology

Background:

  • Microbial keratitis (MK) is a significant cause of vision impairment.
  • Contact lens (CL) wear is a major risk factor for MK, but prevalence data in Spain is limited.

Purpose of the Study:

  • To determine the prevalence, microbiological characteristics, and risk factors of MK associated with CL wear in Spain.
  • To estimate the annual incidence of CL-related MK in the Spanish population.

Main Methods:

  • A 32-centre multicentre study involving 304 patients with MK associated with CL wear.
  • Data collection included patient demographics, CL type and usage, hygiene practices, and microbiological cultures.

Main Results:

  • Infectious keratitis associated with CL wear predominantly affects young women, particularly during summer.
  • Common risk factors included topping off solutions, extending lens life, and lens wear during sleep, swimming, or showering.
  • Overnight wear correlated with increased corneal opacities, and Pseudomonas aeruginosa infections led to severe sequelae and transplantation needs.

Conclusions:

  • CL-related MK in Spain affects young women, with specific risk factors identified.
  • The estimated incidence is approximately 1 case per 30,000 inhabitants annually.
  • Despite most cases being benign, prolonged healing times impact working patients, highlighting the need for improved CL hygiene education.