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Surface Deposits on Worn Hard Contact Lenses

Surface Deposits on Worn Hard Contact Lenses Abstract • Giant papillary conjunctivitis (GPC) is associated with deposits on contact lenses. We used scanning electron microscopy to study the anterior surface of 30 hard contact lenses, both cleaned and not cleaned, worn by patients with GPC and with keratoconus and by asymptomatic subjects. Uncleaned lenses worn by asymptomatic subjects for one day had deposits on about 5% of the surface. In most cases, the deposits were removed completely by one cleaning. Uncleaned lenses worn by patients with GPC or keratoconus had deposits on about 90% of the surface. Most of these deposits were removed by one cleaning. However, residual deposits after cleaning were greater on lenses from patients with keratoconus than on those from patients with GPC. Lenses from asymptomatic subjects rarely had residual deposits after cleaning. We found that the types of deposits on worn soft and hard contact lenses are similar, that there are fewer deposits on hard lenses than on soft lenses, and that deposits on hard lenses, unlike those on soft lenses, generally can be removed by one cleaning. References 1. Allansmith MR, Korb DR, Greiner JV, et al: Giant papillary conjunctivitis in contact lens wearers . Am J Ophthalmol 1977;83:697-708. 2. Fowler SA, Greiner JV, Allansmith MR: Soft contact lenses from patients with giant papillary conjunctivitis . Am J Ophthalmol 1979;88:1056-1061. 3. Fowler SA, Allansmith MR: The surface of the continuously worn contact lens . Arch Ophthalmol 1980;98:1233-1236.Crossref 4. Fowler SA, Allansmith MR: Evolution of soft contact lens coatings . Arch Ophthalmol 1980;98:95-99.Crossref 5. Fowler SA, Allansmith MR: The effect of cleaning soft contact lenses: A scanning electron microscopic study . Arch Ophthalmol 1981;99:1382-1386.Crossref 6. Feldman GL: Complications of contact lenses . Int Ophthalmol Clin 1981;21:155-162.Crossref 7. Greiner JV, Kenyon KR, Henriquez AS, et al: Mucus secretory vesicles in conjunctival epithelial cells of wearers of contact lenses . Arch Ophthalmol 1980;98:1843-1846.Crossref 8. Korb DR, Greiner JV, Finnemore VM, et al: Treatment of contact lenses with papain: Increase in wearing time in keratoconic patients with papillary conjunctivitis . Arch Ophthalmol 1983;101:48-50.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Ophthalmology American Medical Association

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Publisher
American Medical Association
Copyright
Copyright © 1984 American Medical Association. All Rights Reserved.
ISSN
0003-9950
eISSN
1538-3687
DOI
10.1001/archopht.1984.01040030605031
Publisher site
See Article on Publisher Site

Abstract

Abstract • Giant papillary conjunctivitis (GPC) is associated with deposits on contact lenses. We used scanning electron microscopy to study the anterior surface of 30 hard contact lenses, both cleaned and not cleaned, worn by patients with GPC and with keratoconus and by asymptomatic subjects. Uncleaned lenses worn by asymptomatic subjects for one day had deposits on about 5% of the surface. In most cases, the deposits were removed completely by one cleaning. Uncleaned lenses worn by patients with GPC or keratoconus had deposits on about 90% of the surface. Most of these deposits were removed by one cleaning. However, residual deposits after cleaning were greater on lenses from patients with keratoconus than on those from patients with GPC. Lenses from asymptomatic subjects rarely had residual deposits after cleaning. We found that the types of deposits on worn soft and hard contact lenses are similar, that there are fewer deposits on hard lenses than on soft lenses, and that deposits on hard lenses, unlike those on soft lenses, generally can be removed by one cleaning. References 1. Allansmith MR, Korb DR, Greiner JV, et al: Giant papillary conjunctivitis in contact lens wearers . Am J Ophthalmol 1977;83:697-708. 2. Fowler SA, Greiner JV, Allansmith MR: Soft contact lenses from patients with giant papillary conjunctivitis . Am J Ophthalmol 1979;88:1056-1061. 3. Fowler SA, Allansmith MR: The surface of the continuously worn contact lens . Arch Ophthalmol 1980;98:1233-1236.Crossref 4. Fowler SA, Allansmith MR: Evolution of soft contact lens coatings . Arch Ophthalmol 1980;98:95-99.Crossref 5. Fowler SA, Allansmith MR: The effect of cleaning soft contact lenses: A scanning electron microscopic study . Arch Ophthalmol 1981;99:1382-1386.Crossref 6. Feldman GL: Complications of contact lenses . Int Ophthalmol Clin 1981;21:155-162.Crossref 7. Greiner JV, Kenyon KR, Henriquez AS, et al: Mucus secretory vesicles in conjunctival epithelial cells of wearers of contact lenses . Arch Ophthalmol 1980;98:1843-1846.Crossref 8. Korb DR, Greiner JV, Finnemore VM, et al: Treatment of contact lenses with papain: Increase in wearing time in keratoconic patients with papillary conjunctivitis . Arch Ophthalmol 1983;101:48-50.Crossref

Journal

Archives of OphthalmologyAmerican Medical Association

Published: May 1, 1984

References