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PHOTOMETRIC OCULOMETRY. I
Author(s) -
KROGSAA BENT,
FLEDELIUS HANS,
LARSEN JESPER,
LUNDANDERSEN HENRIK
Publication year - 1984
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.1755-3768.1984.tb08404.x
Subject(s) - optometry , computer science , medicine
The optical principles of slit‐lamp fluorophotometry are analysed by aid of a mathematical model of the optical system. The analysis forms the theoretical basis for a slit‐lamp technique called photometric oculometry, which makes possible an estimation of intraocular axial distances and axial length. The technique is based on a calculation ‐ by aid of a mathematical model of the eye — of the ratio between intraocular movement of the slit‐lamp focal plane and corresponding movement of the slit‐lamp. Intraocular axial distances can be calculated by aid of this ratio and a direct measurement of the slit‐lamp movement when the focal plane is moved in the optical axis from retina to cornea. These items are prerequisites for a quantitative determination of the blood‐retinal barrier permeability to fluorescein during vitreous fluorophotometry.