Logo image
Scanning laser polarimetry reveals status of RNFL integrity in eyes with optic nerve head swelling by OCT
Journal article   Open access   Peer reviewed

Scanning laser polarimetry reveals status of RNFL integrity in eyes with optic nerve head swelling by OCT

Mark J Kupersmith, Randy Kardon, Mary Durbin, Melissa Horne and Julia Shulman
Investigative ophthalmology & visual science, Vol.53(4), pp.1962-1970
04/18/2012
DOI: 10.1167/iovs.11-9339
PMCID: PMC3995564
PMID: 22410562
url
https://doi.org/10.1167/iovs.11-9339View
Published (Version of record) Open Access

Abstract

Optical coherence tomography (OCT) shows retinal nerve fiber layer (RNFL) thickening in optic nerve head (ONH) swelling, but does not provide information on acute axonal disruption. It was hypothesized that scanning laser polarimetry (SLP) compared with OCT might reveal the status of axon integrity and visual prognosis in acute RNFL swelling. Threshold perimetry, OCT, and SLP were used to prospectively study eyes with papilledema (24), optic neuritis (14), nonarteritic anterior ischemic optic neuropathy (NAION) (21), and ONH swelling (average RNFL value by OCT was above the 95th percentile of controls at presentation). Regional RNFL was judged reduced if the quadrant measurement was below the fifth percentile of controls. At presentation, average RNFL by OCT was similar for eyes with papilledema and NAION (P = 0.97), and reduced for optic neuritis. Average RNFL by SLP was slightly increased for papilledema and optic neuritis, and reduced for NAION (P = 0.02) eyes. The RNFL by SLP was reduced in at least one quadrant in 1 eye with papilledema, 1 eye with optic neuritis, and in 13 eyes with NAION. In NAION eyes, quadrants with reduced SLP had corresponding visual field loss that did not recover. By one month, eyes with NAION showed RNFL thinning by OCT (7/17 eyes) and by SLP (14/16 eyes) in contrast to optic neuritis (by OCT, 0/12, P = 0.006; and by SLP, 1/12, P = 0.0004). OCT and SLP revealed different aspects of RNFL changes associated with ONH swelling. OCT revealed thickening due to edema. SLP revealed a decrease in retardance in eyes with axonal injury associated with visual field loss, which is unlikely to recover.
Reproducibility of Results Follow-Up Studies Humans Middle Aged Papilledema - pathology Male Tomography, Optical Coherence - methods Retinal Ganglion Cells - pathology Young Adult Optic Neuritis - etiology Adolescent Papilledema - complications Aged, 80 and over Adult Female Scanning Laser Polarimetry - methods Aged Optic Neuritis - pathology Optic Disk - pathology

Details

Metrics

Logo image