Premium
Improving vision and comfort of patients with corneal deformations with implementation of ultraHealth and ultraHealth FC S‐H Hybrid Lenses
Author(s) -
Manczak H.
Publication year - 2015
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2015.0243
Subject(s) - centration , cornea , lens (geology) , ophthalmology , quadrant (abdomen) , medicine , optics , corneal epithelium , materials science , effects of long term contact lens wear on the cornea , optometry , surgery , physics
Summary In spite of the quadrant specific lens designs, fitting GP lenses to protruded corneas is a greater fitting compromise compared with fitting regular shaped corneas with GP corneal lenses. Also as GP corneal lenses have direct mechanical impact on unhealthy, more vulnerable KC epithelium, they are more likely to induce erosions, abrasions and other mechanical changes. Additionally, due to lack of centration evoked by misalignment of the tip of the cone and optical axis of the cornea, the visual outcome of GP corneal lens wear in patients with corneal irregularity in comparison to GP wear in regular shape corneas patients is usually worse. Synergeyes UltraHealth and UltraHealth Flat Curve hybrid lenses are designed to reduce or eliminate interaction between the part of the cornea within the area of the protrusion, and the back surface of the lens. In addition, size of Synergeyes hybrid lenses is 14.5 mm what usually results in better centration over the visual axis which leads to a reduction of HOA; thus they give a better visual quality outcome. Hypoxia, one of major drawbacks of former hybrid lenses, is greatly alleviated with the new materials that are available. Therefore, currently it is possible to diminish or in some cases entirely exclude complications enhancing the visual outcome at the same time.