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Clinical Importance of Sagittal Height in Orthokeratology Lens Fitting
2021
Annals of Optometry and Contact Lens
Preserved Fulltext
In orthokeratology (Ortho-k) lens fitting, stable centration of the lens and sufficient tear layers are essential for maintaining persistent vision correction and healthy corneas. However, accurate Ortho-k lens alignment is not easy; thus, sagittal height (Sag) adjustment is required. The Sag describes the vertical distance of the cornea at a given point. The same principle applies to a contact lens. The Sag of the peripheral zone is the primary concern in lens alignment. In this review, the
doi:10.52725/aocl.2021.20.2.52
fatcat:tj4envzv7bbqtjgdqrbyhwts6u