Content area
Full text
ABSTRACT
Using the Optos Panoramic200 Scanning Laser Ophthalmoscope (Optos, Scotland, United Kingdom), clinically relevant findings anterior to the retinal surface, represented in digital ultra-wide field fundus images, were identified. Examples in this series demonstrate the potential for findings at the level of the crystalline lens and the full depth of the vitreous when imaging of the retina and choroid complex is undertaken. Clinicians interpreting these images should be aware of the potential contribution of information from anterior segment structures and the vitreous cavity. The information derived from anterior segment structures may enhance the diagnostic potential of the instrument. [Ophthalmic Surg Lasers Imaging 2008;39:160-163.]
INTRODUCTION
Pomerantzeff acquired 148° equator-plus fundus photographs with a contact lens system where two fiberoptic bundles were directed from the peripheral cornea through the nodal point of the eye.1 The Panoramic200 Scanning Laser Ophthalmoscope (Optos, Scotland, United Kingdom) is a non-contact scanning laser digital imaging system that captures up to 200° wide fundus images without pupil dilation.2 The system creates a real image of its two scanning beams at the first of two focal points generated by an ellipsoid mirror. A virtual image of the scanner beams is created at the second focal point. The nodal point of the imaged eye is positioned at this second focal point, creating a virtual intraocular scanning site. Light returning from the fundus is captured along the same scanning path, revealing information about structures anterior to the retina via direct and retro illumination.
Approximately 10,000 Optomap® (Optos) retinal examinations are performed daily (personal communication, T. Daniells, Optos, April 20, 2007). We report clinically relevant findings anterior to the retina embedded in the Panoramic200 images, particularly when captured through a dilated pupil.
CASE REPORTS
A 90-year-old man with systemic hypertension and bilateral pseudophakia presented with a visual acuity of 20/20 in both eyes during a routine follow-up examination. Scanning laser ophthalmoscopic imaging of the left eye through a dilated pupil showed the intraocular lens optic and haptics, as well as a nearly 1-disc diameter retinal hemorrhage with surrounding exudate, approximately 4-disc diameters temporal to the fovea (Fig. 1A). A diagnosis of...