Soft bifocal contact lenses for patients with nearpoint asthenopia.

Abstract

Bifocal contact lenses have generally been considered solely for the presbyopic population. However, pre-presbyopic individuals with accommodative or vergence disorders who respond favorably to plus lenses at near may be good candidates for bifocal contact lenses. A group of ten non-presbyopic patients who manifest accommodative dysfunctions or near point esophoria were fit with the Ciba BI-SOFT contact lenses. Nearpoint accommodative and vergence findings were evaluated through both near point plus spectacle lenses and the bifocal soft lenses. Results indicate that the BI-SOFT bifocal contact lens was effective in changing the near point visual posture. However, poor distance vision acuity due to ghost images reduced the subjective success rate of the BI-SOFT lens on this non-presbyopic population.

• Authors: D P Libassi, C L Barron, R London
• Journal: Journal of the American Optometric Association (J Am Optom Assoc) Vol. 56 Issue 11 Pg. 866-70 (Nov 1985) ISSN: 0003-0244 [Print] United States
• PMID: 4078211 (Publication Type: Journal Article)

Topics

• Adult
• Asthenopia (therapy)
• Contact Lenses, Hydrophilic
• Humans
• Pilot Projects