Incidence of keratitis of varying severity among contact lens wearers
| Autor: | Philip B. Morgan, Mathew K. Raynor, Nathan Efron, Elizabeth A. Hill, Mark A. Whiting, Andrew B. Tullo |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Adult
Male medicine.medical_specialty Contact Lenses Population macromolecular substances complex mixtures Severity of Illness Index Eye Infections Bacterial Hydrogel Polyethylene Glycol Dimethacrylate Keratitis Clinical Science - Extended Reports Cellular and Molecular Neuroscience Ophthalmology Cornea Severity of illness medicine Humans education Corneal Ulcer Disposable Equipment Aged Aged 80 and over education.field_of_study business.industry Incidence (epidemiology) musculoskeletal neural and ocular physiology technology industry and agriculture Eye infection Middle Aged medicine.disease corneal ulcer Contact Lenses Hydrophilic Sensory Systems eye diseases Contact lens medicine.anatomical_structure nervous system England Contact Lenses Extended-Wear Female sense organs business Epidemiologic Methods |
| Zdroj: | Morgan, P, Efron, N, Hill, E, Raynor, M K, Whiting, M A & Tullo, A B 2005, ' Letter. Incidence of keratitis of varying severity among contact lens wearers ' British Journal Of Ophthalmology . DOI: 10.1136/bjo.2004.052688 Morgan, P B, Efron, N, Hill, E A, Raynor, M K, Whiting, M A & Tullo, A B 2005, ' Incidence of keratitis of varying severity among contact lens wearers ', British Journal Of Ophthalmology, vol. 89, no. 4, pp. 430-436 . https://doi.org/10.1136/bjo.2004.052688, https://doi.org/10.1136/bjo.2004.052688 Morgan, P B, Efron, N, Hill, E A, Raynor, M K, Whiting, M A & Tullo, A B 2005, ' Incidence of keratitis of varying severity among contact lens wearers ' British Journal Of Ophthalmology, vol. 89, no. 4, pp. 430-436 . https://doi.org/10.1136/bjo.2004.052688, https://doi.org/10.1136/bjo.2004.052688 |
| ISSN: | 0007-1161 |
| DOI: | 10.1136/bjo.2004.052688 |
| Popis: | Aim: To determine the incidence of non-severe keratitis (NSK) and severe keratitis (SK) among wearers of current generation contact lenses. Methods: A 12 month, prospective, hospital based epidemiological study was conducted by examining all contact lens wearers presenting with a corneal infiltrate/ulcer to a hospital centre in Manchester. A clinical severity matrix was used to differentiate between NSK and SK, based on the severity of signs and symptoms. The size of the hospital catchment population and the wearing modalities (daily wear (DW) or extended wear (EW)) and lens types being used were estimated from relevant demographic and market data. Results: During the survey period, 80 and 38 patients presented with NSK and SK, respectively. The annual incidences (cases per 10 000 wearers) for each wearing modality and lens type were: DW rigid—NSK 5.7, SK 2.9; DW hydrogel daily disposable—NSK 9.1, SK 4.9; DW hydrogel (excluding daily disposable)—NSK 14.1, SK 6.4; DW silicone hydrogel—NSK 55.9, SK 0.0; EW rigid—NSK 0.0, SK 0.0; EW hydrogel—NSK 48.2, SK 96.4; EW silicone hydrogel—NSK 98.8, SK 19.8. The difference in SK between EW hydrogel and EW silicone hydrogel was significant (p = 0.04). Conclusions: A clinical severity matrix has considerable utility in assessing contact lens related keratitis. There is a significantly higher incidence of SK in wearers who sleep in contact lenses compared with those who only use lenses during the waking hours. Those who choose to sleep in lenses should be advised to wear silicone hydrogel lenses, which carry a five times decreased risk of SK for extended wear compared with hydrogel lenses. |
| Databáze: | OpenAIRE |
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