What does this research mean for the field?

A majority of individuals (78 out of 101 eyes) can successfully adapt to spherical contact lenses within a 90-day period, while 23 eyes show persistent adaptation issues identifiable from the first day of wear. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate how individuals adapt to spherical contact lenses over a 90-day period.

February 19, 2026

Adaptation to Corneal Contact Lenses

Key Points

To evaluate how individuals adapt to spherical contact lenses over a 90-day period.
Fitted 53 healthy individuals with spherical contact lenses.
Conducted clinical tests including keratometry, central corneal clouding, and subjective blur refraction.
Monitored adaptation across four time intervals over the 90-day period.
78 out of 101 eyes adapted successfully to the contact lenses.
Subjective blur refraction was a critical measure for evaluating adaptation.
23 eyes showed persistent adaptation issues identifiable from day one.

Abstract

ABSTRACT Fifty‐three persons with healthy eyes were fitted with spherical contact lenses and monitored over a 90‐day test period. Clinical tests of keratometry, central corneal clouding and subjective spectacle blur refraction with resultant visual acuity were conducted at four time intervals and those test constituted the profiles. Adaptation was judged complete for 78 eyes. The critical test was the subjective blur refraction and the resultant visual acuity. The keratometer flat meridian was also unchanged. The observation of central corneal clouding did not correlate with these findings. The remaining 23 eyes were not adapted in the 90‐day test period. These eyes were identifiable as early as the first day of wear. Four profiles of adaptation were built; fast adapting eyes, slow adapting eyes, eyes with near spherical corneas and eyes with astigmatic corneas.

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