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Related Concept Videos

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In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
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Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
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Ocular demodicosis: A review.

V Moris García1, G Valenzuela Vargas1, M Marín Cornuy1

  • 1Laboratorio de Microbiología Molecular, Escuela de Tecnología Médica, Universidad Austral de Chile, Puerto Montt, Chile.

Archivos De La Sociedad Espanola De Oftalmologia
|June 2, 2019
PubMed
Summary
This summary is machine-generated.

Demodex mites, Demodex folliculorum and Demodex brevis, are linked to eye conditions like blepharitis. Consider Demodex testing for persistent ocular surface diseases unresponsive to antibiotics.

Keywords:
BlefaritisBlepharitisBrevisCaspa cilíndricaChalazionChalaziónCylindrical dandruffDemodexFolliculorum

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Area of Science:

  • Ophthalmology
  • Dermatology
  • Parasitology

Background:

  • Demodex mites (Demodex folliculorum, Demodex brevis) are common human skin ectoparasites.
  • These mites are associated with various ocular surface disorders, including Meibomian gland dysfunction, blepharitis, and chalazion.
  • Ocular demodicosis presents with characteristic eyelash dandruff and symptoms like itching and redness.

Purpose of the Study:

  • To review the scientific literature on the role of Demodex mites in ocular diseases.
  • To assess the relationship between Demodex infestation and the prevalence/incidence of eye conditions.

Main Methods:

  • Bibliographic review of publications from 2005 to 2018.
  • Analysis of studies investigating Demodex spp. in ocular disease.

Main Results:

  • A significant association was found between Demodex mite infestation and eye diseases.
  • Demodex folliculorum is more prevalent than Demodex brevis in ocular infestations.
  • Infestation rates increase with patient age.
  • Demodex prevalence rises in patients with blepharitis and other ocular surface infections.

Conclusions:

  • Demodex mites play a significant role in ocular surface diseases.
  • Testing for Demodex mites is recommended for patients with refractory blepharitis or infectious ocular surface conditions.
  • Demodex folliculorum and Demodex brevis infestation prevalence increases with age.