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Soft contact lens contamination by Alternaria alternata
Abstract:
Two cases of contact lens contamination by the fungus, Alternaria alternata, are described. In both patients, mild ocular irritation was the presenting symptom but neither suffered fungal infection of the eye. To our knowledge, A alternata has not previously been reported as a contaminant of contact lenses, although it is an ubiquitous saprophyte and has been reported as causing infections in humans. The close succession in which these two patients presented may indicate that such fungal contamination of contact lenses is not uncommon. The importance of adequate cleaning regimens for daily-wear contact lenses (which are inserted and removed each day), and the necessity for patients with extended-wear contact lenses (which are worn continuously) to seek medical attention immediately should any problems arise, are emphasized.
Insights
Contact lenses can become contaminated with the fungus Alternaria alternata, causing mild eye irritation but not infection. This highlights the need for proper contact lens hygiene to prevent potential fungal contamination.
Area of Science:
- Ophthalmology
- Mycology
- Contact Lens Care
Background:
- Alternaria alternata is a common fungus found in the environment.
- While known to cause human infections, it has not been previously reported as a contact lens contaminant.
- Two cases of contact lens contamination by A. alternata were observed.
Observation:
- Two patients presented with mild ocular irritation attributed to contact lens contamination.
- The contaminating fungus was identified as Alternaria alternata.
- Neither patient developed a fungal keratitis or other intraocular infection.
Findings:
- Alternaria alternata, previously unreported as a contact lens contaminant, was identified in two separate cases.
- The sequential presentation of these cases suggests potential underreporting of A. alternata as a contact lens contaminant.
- Mild ocular irritation was the sole clinical manifestation in both instances.
Implications:
- This finding underscores the importance of rigorous contact lens cleaning and disinfection protocols for daily wear lenses.
- Patients using extended-wear contact lenses must seek immediate medical evaluation for any ocular symptoms to prevent serious complications.
- Awareness among eye care professionals regarding A. alternata as a potential contact lens contaminant is warranted.