title: Reading performance with various lamps in age-related macular degeneration.
abstract: The purpose of this study was to determine if there was an objective difference in reading between four commonly available lamps, of varying spectral radiance, for 13 subjects with age-related maculopathy (ARM) or non-exudative age-related macular degeneration (AMD)--logMAR visual acuity between 0.04 and 0.68. At a constant illuminance of 2000 lux, there was no interaction between ARM and AMD subgroups and no statistically significant difference between the lamps: standard (clear envelope) incandescent, daylight simulation (blue tint envelope) incandescent, compact fluorescent and halogen incandescent, for any reading outcome measure (threshold print size p = 0.67, critical print size p = 0.74, acuity reserve p = 0.84 and mean reading rate p = 0.78). For lamps typically used in low-vision rehabilitation, a clinically significant effect of spectral radiance on reading for people with ARM or non-exudative AMD is unlikely.
authors.affiliation: Ophthalmic Research Group, School of Life and Health Sciences, Aston University, Birmingham B4 7ET, UK. f.eperjesi@aston.ac.uk
authors.forename: F
authors.initials: F
authors.lastname: Eperjesi
authors.forename: C
authors.initials: C
authors.lastname: Maiz-Fernandez
authors.forename: H E
authors.initials: HE
authors.lastname: Bartlett
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008027:Light; D008029:Lighting / Q000379:methods*; D008268:Macular Degeneration / Q000523:psychology*; D008297:Male; D008875:Middle Aged; D011932:Reading; D012160:Retina; D012542:Scattering, Radiation; D014787:Vision Tests; D014796:Visual Perception / Q000502:physiology*