|
|
Slit Lamp Biomicrography
Summary and References
James P. Gilman, CRA
Director of Ophthalmic Photography
John Moran Eye Center
Salt Lake City, Utah
Summary
Patients present with corneal and anterior segment problems that contain obvious details and subtle details. In our quest for documenting the disease process with best images possible, we must employ the lighting situation and magnification that best describes the problem. An obvious lesion of opaque, or crystalline nature will best be described with the direct lighting techniques outlined. A lesion that is transparent, opalescent, or refractile in nature, will be better imaged using an indirect form of illumination so that subtle details will not be washed out in a harsh light. If a combination of lighting techniques and various magnifications are used in this pursuit, a well documented disease with potential for publication quality will be the result.
Exposure Tables
Exposure Parameters Table
Zeiss 40 SLP Photo Slitlamp - ISO 400
|
Illumination
|
Flash Power
|
Aperture
|
Magnification
|
Dual Diffuse
|
2
|
f/28
|
10x
|
Dual Diffuse
|
2
|
f/22
|
16x
|
Fine Slit
(Full Fill)
|
4
|
f/45
|
10x
|
Broad Tangential
|
4
|
f/32-45
|
16x
|
Broad Tangential
|
4
|
f/32
|
10x
|
Retroillumination
(No Fill)
|
4
|
f/22
|
16x
|
Retroillumination
(No Fill)
|
4
|
f/22
|
10x
|
Exposure Parameters Table
Zeiss Photo Slitlamp - ISO 200
|
Illumination
|
Flash Power
|
Aperture
|
Magnification
|
Dual Diffuse
|
4
|
f/45
|
10x
|
Dual Diffuse
|
4
|
f/45
|
16x
|
Fine Slit
(Full Fill)
|
4
|
f/16
|
10x
|
Broad Tangential
|
4
|
f/22
|
16x
|
Broad Tangential
|
4
|
f/22
|
10x
|
Retroillumination
(No Fill)
|
4
|
f/14
|
16x
|
Retroillumination
(No Fill)
|
4
|
f/14
|
10x
|
References
Coppinger, M., Maio, M., Miller,K.: Ophthalmic Photography. Slack Incorporated, New Jersey
Justice, J.: Ophthalmic Photography. Little Brown and Company. Boston. 1982.
Martonyi, C.,Bahn, C., Myer, R.: Clinical Slit Lamp Biomicroscopy and Photo Slit Lamp Biomicrography. Time One Ink. Michigan.1985.
Wong, D.: Textbook of Ophthalmic Photography. Inter-Optics Publications. New York. 1982.
|
|
|