New shape of a videokeratometric illuminator

• Autorzy: Siedlecki D. , Kasprzak H.
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to define such shape of a videokeratometric Placido disc-based illuminator that would guarantee flat image formation and, consequently, sharp and reliable information an corneal geometry. It is especially important for contact lens fitting to have reliable corneal data in a corneal peripheral area. It has been proved that shape of this stimulator profile depends on assumed corneal geometry. The ellipsoidal corneal shape has been assumed. The results show that the surface on which Placido rings are painted should have a cigar-like shape. Probably none of the devices used currently in clinical practice have such shape.

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2002
• Tom: Vol. 32, nr 4
• Strony: 665--672
• Opis fizyczny: bibliogr. 16 poz.

Twórcy

autor

Siedlecki D.

autor

Kasprzak H.

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław