Stability of Back‐Toric Prism‐Ballast Hydrogel Contact Lenses

Key Points

• This research aims to assess the stability of various hydrogel contact lenses on the corneal surface.
• Fitted 20 eyes with three types of Hydrocurve contact lenses: spherical with prism ballast, back-toric without ballast, and back-toric with ballast.
• Monitored the stability of each fitting over a defined period.
• Assessed the effects of lens design on corneal stability under varying levels of toricity.
• Prism-ballast lenses were generally stable on corneas with toricity ranging from zero to 3.5 DK.
• Back-toric nonprism lenses were found to be unstable during monitoring.