@article {Remky464, author = {A Remky and A E Elsner}, title = {Blue on yellow perimetry with scanning laser ophthalmoscopy in patients with age related macular disease}, volume = {89}, number = {4}, pages = {464--469}, year = {2005}, doi = {10.1136/bjo.2004.050260}, publisher = {BMJ Publishing Group Ltd}, abstract = {Background/aim: The loss of short wavelength sensitive (SWS) cone mechanism sensitivity is related to severe vision loss in patients with age related maculopathy (ARM). A case-control study of patients with ARM and age matched controls was performed, using blue on yellow static perimetry. Methods: A bright yellow background at 594 nm isolated the responses of short wavelength cone mechanisms to 458 nm targets. A scanning laser ophthalmoscope produced stimuli and provided real time, simultaneous fundus illumination. The macula was probed with 16 Goldmann IV targets, 1{\textendash}10 degrees from fixation, using a staircase method. Results: 24 patients with non-exudative ARM were matched to 24 subjects with normal fundus appearance. SWS cone pathway sensitivity for macular targets was significantly reduced in the patients with ARM compared to normals{\textemdash}15.45 (SD 4.56) dB v 17.22 (0.28) dB, respectively (p\<0.0005). There was not only a diffuse loss of sensitivity in ARM patients, but also a localised loss of sensitivity over drusen (p\<0.025). Neither the mean age, 69 (8) years, nor the mean visual acuity differed between groups, logMAR 0.09 (0.10) v 0.05 (0.06) for ARM patients v normals, respectively. Patients with soft drusen had lower sensitivity than those with hard drusen (p \<0.05). Conclusion: A loss of SWS cone pathway sensitivity occurred in most patients with early ARM, despite good visual acuity, demonstrating a loss of visual function that cannot be attributed to ageing changes. The loss of sensitivity, despite good visual acuity, included both a diffuse loss and localised losses.}, issn = {0007-1161}, URL = {https://bjo.bmj.com/content/89/4/464}, eprint = {https://bjo.bmj.com/content/89/4/464.full.pdf}, journal = {British Journal of Ophthalmology} }