RT Journal Article
SR Electronic
T1 Scanning laser densitometry in visual acuity loss of unknown origin.
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 1051
OP 1054
DO 10.1136/bjo.80.12.1051
VO 80
IS 12
A1 P J DeLint
A1 J E Keunen
A1 A T Liem
A1 D van Norren
YR 1996
UL http://bjo.bmj.com/content/80/12/1051.abstract
AB AIM: To assess foveal cone photoreceptor function in patients with unexplained loss of central visual acuity. METHODS: Testing of foveal cone photoreceptor function was performed using scanning laser densitometry, colour matching (Rayleigh equation), and pattern electroretinography (ERG). Standard tests included full field ERG, electrooculography, visual evoked potentials, static perimetry, and fluorescein angiography. RESULTS: Decreased foveal cone photopigment density and abnormal pattern ERG were found in three patients. Results of colour matching were not unequivocal. CONCLUSION: Testing of foveal cone photoreceptor function using scanning laser densitometry may determine the location of pathological changes in certain patients with unexplained visual loss.