title: Protein and elemental analysis of contact lenses of patients with superior limbic keratoconjunctivitis or giant papillary conjunctivitis.
abstract: Soft contact lenses worn by six patients (12 eyes) diagnosed as having contact lens-induced superior limbic keratoconjunctivitis (SLK) and from four patients (5 eyes) with giant papillary conjunctivitis (GPC) were analyzed for protein concentration and for elemental content. Fifty-five percent water content, ionic lenses containing methacrylic acid had high protein concentration. Calcium was not a common element found on protein-coated lenses. Sulfur and iron were found on used and new lenses. An elevated level of mercury was detected in one gray lens that had been disinfected in thimerosal-preserved saline with a high heat disinfection unit by a patient with SLK.
authors.affiliation: College of Optometry, Ohio State University, Columbus.
authors.forename: J T
authors.initials: JT
authors.lastname: Barr
authors.forename: P R
authors.initials: PR
authors.lastname: Dugan
authors.forename: W R
authors.initials: WR
authors.lastname: Reindel
authors.forename: O H
authors.initials: OH
authors.lastname: Tuovinen
mesh_terms: D000367:Age Factors; D002118:Calcium / Q000032:analysis; D003233:Conjunctivitis, Allergic / Q000209:etiology*; D003263:Contact Lenses, Hydrophilic / Q000009:adverse effects*; D006801:Humans; D007501:Iron / Q000032:analysis; D007637:Keratoconjunctivitis / Q000209:etiology*; D008628:Mercury / Q000032:analysis; D011188:Potassium / Q000032:analysis; D011506:Proteins / Q000032:analysis*; D013052:Spectrometry, X-Ray Emission; D013455:Sulfur / Q000032:analysis
chemical_list: D011506:Proteins; D013455:Sulfur; D007501:Iron; D008628:Mercury; D011188:Potassium; D002118:Calcium