Answers are grounded in this paper and cite their sources.
Evaluation of lens rotation differences between spherical nonprism and prism-ballast hydrogel contact lenses on toric corneas, suggesting better stability for prism designs.
Six subjects were fitted binocularly with both nonprism and prism‐ballast spherical Hydrocurve™ contact lenses to evaluate lens rotation on toric corneas. The 1 Δ and the 1 Δ lenses rotated significantly less than the equivalent nonprism lenses. For 11 of 12 eyes, V2 A was sufficient to stabilize the lens.
No takes yet. Share an insight, caveat, or question.
Harris et al. (1977) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: