Laser Scheimpflug videography.

Abstract:

:Conventional Scheimpflug photography uses slits with a constant width of 80 microns. This parameter limits the resolution as sharp contours are imaged with a basic uncertainty. In order to reduce this basic uncertainty we developed an illumination slit with a width of 20 microns and less, using a green helium-neon laser (543 nm). With this slit, much sharper imaging of ocular contours can be achieved. Since this illumination is coupled to on-line videographic detection of the Scheimpflug image, any adjustment of the target is done under visual control at the monitor. Using this device, the slope of a densitogram of contrasted contours (for example the corneal surfaces) is steeper, which guarantees a more accurate detection of corneal thickness and curvature.

journal_name

Ophthalmic Res

journal_title

Ophthalmic research

authors

Huebscher HJ,Möller DE,Seiler T

doi

10.1159/000267967

subject

Has Abstract

pub_date

1996-01-01 00:00:00

pages

127-30

eissn

0030-3747

issn

1423-0259

journal_volume

28 Suppl 2

pub_type

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