[Cataract diagnosis using scattered light at 700 nm].
The present study was undertaken to determine whether the scattered light of lenses measured with the Opacity Lensmeter 701 can be used for objective, quantitative assessment of lens opacities, and how far pupillary diameter and the type of lens opacity affect the measurement. Visual acuity and scattered light were determined in 150 eyes with the Opacity Lensmeter set at 700 nm. In the group with nuclear cataract there was a significant correlation between visual acuity and the amount of scattered light measured by the Lensmeter. In the groups with cataracta scutellaris posterior and cortical cataract there was no significant correlation between visual acuity and scattered light measurements. While the Interzeag Opacity Lensmeter 701 is capable of furnishing data on fairly large populations with nuclear cataract, it is of limited value for assessing individual cases. The influence of pupillary diameter on the scattered light measurement was examined in 50 selected eyes. In all 30 of the eyes with cataract, significant correlations were found between pupillary diameter and scattered light measurements, while this was the case in only 10 of the 20 normal eyes. Therefore, when measuring stray light in cataract cases, the pupillary diameter should be stated.
Strobel
J
J
Universitäts-Augenklinik Giessen.
Reck
B
B
Rödinger
M L
ML
D002386:Cataract / Q000175:diagnosis*; D002387:Cataract Extraction; D004311:Double-Blind Method; D006801:Humans; D008027:Light; D011446:Prospective Studies; D012025:Reflex, Pupillary / Q000502:physiology; D012542:Scattering, Radiation
Katarakt-Diagnostik mittels Streulichtmessung bei 700 nm.