What question did this study set out to answer?

This research aims to evaluate corneal edema development under closed-eye conditions with different contact lenses.

March 21, 2026

Corneal Edema with Contact Lenses under Closed‐Eye Conditions

Puntos clave

This research aims to evaluate corneal edema development under closed-eye conditions with different contact lenses.
Subjects wore PMMA, CAB, and thin hydrogel lenses with closed eyes for 6 hours.
Corneal edema was assessed by measuring central clouding and thickness using a slit-lamp biomicroscope and pachometer.
Comparative analysis of edema across the three lens types was conducted.
Clouding was greater with PMMA and CAB lenses compared to thin hydrogel lenses.
Corneal thickness increased similarly across all lens types for individual subjects.
Variability in thickness increase was noted among different subjects.

Resumen

Abstract Subjects wore PMMA, CAB, and thin hydrogel contact lenses with their eyes closed for periods of 6 hr. The corneal edema that developed was evaluated by observing the amount of central circular clouding and by measuring the increase in central corneal thickness with a slit‐lamp biomicroscope and pachometer. Central circular clouding was greater with the PMMA and CAB lenses than with the thin hydrogel lenses. Corneal thickness increased by different amounts for the three subjects, but the three lens types caused about the same increase in corneal thickness for a given subject.

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