Corneal epithelial alterations induced by disposable contact lens wear

Kazuo Tsubota, M. Yamada

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Purpose: To study the effect of disposable extended-wear soft contact lenses on the corneal epithelium. Methods: Thirteen healthy patients (1 male, 12 females; average age, 26.3 ± 7.6 years) with or without histories of previous contact lens use were recruited for this study. Specular microscopic pictures of the corneal epithelium and endothelium were taken with the help of a specular contact lens, before and after 3 months of contact lens use. The pictures were analyzed by means of a computer-assisted morphometric analysis system. Results: The mean cell area and coefficient of variation (CV) of the mean cell area of the corneal epithelium before contact lens use were 639.4 ± 84.0 μm2 and 29.1 ± 13.2, respectively. After lens wear, the mean cell area increased to 819.7 ± 99.2 μm2 (P < 0.01), whereas the CV decreased to 20.0 ± 6.1 (P < 0.05). The corresponding values for the endothelium were 300.8 ± 22.5 μm2 and 36.4 ± 7.3 before contact lens use, and remained at 322.3 ± 27.8 μm2 and 32.8 ± 3.7 after contact lens use, respectively (P > 0.05). Conclusions: Based on the 3-month results, disposable extended-wear soft contact lenses caused similar enlargement of the mean cell area of the superficial corneal epithelium, as has been reported previously. It would appear that disposable lenses may cause the same metabolic and physiologic changes in the corneal epithelium as do conventional extended-wear soft contact lenses.

Original languageEnglish
Pages (from-to)1193-1196
Number of pages4
JournalOphthalmology
Volume99
Issue number8
Publication statusPublished - 1992

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Corneal Epithelium
Contact Lenses
Extended-Wear Contact Lenses
Hydrophilic Contact Lens
Lenses
Cell Enlargement
Corneal Endothelium

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Corneal epithelial alterations induced by disposable contact lens wear. / Tsubota, Kazuo; Yamada, M.

In: Ophthalmology, Vol. 99, No. 8, 1992, p. 1193-1196.

Research output: Contribution to journalArticle

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