Rigid contact lens wear leads to increased straylight during contact lens wear and after contact lens removal. This may be because of subclinical effects of contact lens wear on the cornea and is not seen in soft contact lens wearers.
Corneal scars can have a strong effect on quality of vision by diminishing visual acuity and increasing straylight. The increase in straylight from corneal scars on its own can lead to a serious visual handicap. Contact lens treatment did not improve straylight, but showed a slight worsening. As the recovery of visual acuity with contact lens wear far exceeded straylight increase, contact lenses remain a clinically useful treatment option in most patients with corneal scars.
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