Related Experiment Videos
Scanning laser densitometry in multiple evanescent white dot syndrome
G J van Meel1, J E Keunen, D van Norren
1F. C. Donders Institute of Ophthalmology, Utrecht State University, The Netherlands.
Retina (Philadelphia, Pa.)
|January 1, 1993
Summary
Scanning laser densitometry revealed visual pigment abnormalities in patients with multiple evanescent white dot syndrome (MEWDS). These pigment changes persisted even after visible lesions resolved, suggesting a deeper metabolic disturbance.
Area of Science:
- Ophthalmology
- Retinal Imaging
- Visual Electrophysiology
Background:
- Multiple evanescent white dot syndrome (MEWDS) is an idiopathic inflammatory condition affecting the outer retina.
- Understanding the pathophysiology of MEWDS is crucial for diagnosis and management.
Observation:
- A 28-year-old male with MEWDS underwent serial scanning laser densitometry.
- Fundus imaging and visual pigment density maps were analyzed during acute and recovery phases.
Findings:
- Acute MEWDS showed areas of absent visual pigment larger than visible white dots.
- Rod density was reduced with prolonged rhodopsin regeneration time.
- Visual pigment abnormalities persisted on densitometry despite clinical resolution of white dots.
Implications:
- Findings suggest a metabolic disturbance at the retinal pigment epithelium-photoreceptor complex in MEWDS.
- Scanning laser densitometry offers insights into subclinical changes in MEWDS.
- Correlates with electroretinography, anomaloscopic testing, and perimetry data.