TY - JOUR
T1 - The Minnesota Grading System of eye bank eyes for age-related macular degeneration
AU - Olsen, Timothy W.
AU - Feng, Xiao
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/12
Y1 - 2004/12
N2 - PURPOSE. The Minnesota Grading System (MGS) is a method to evaluate human eye bank eyes and determine the level of age-related macular degeneration (AMD), by using criteria and definitions from the Age-Related Eye Disease Study (AREDS). METHODS. Donor eyes (108 pairs) from the Minnesota Lions Eye Bank were cut circumferentially at the pars plana to remove the anterior segment. A 1000 ± 2.5-μm ruby sphere was placed on the optic nerve as a size reference. A digital, high-resolution, color macular photograph was taken through a dissecting microscope. The neurosensory retina was removed from one globe of the pair. The underlying retinal pigment epithelium was rephotographed, localizing the fovea with a proportional triangle. A grid was superimposed in the macular photographs and images were graded according to AREDS criteria. Twenty pairs were dissected bilaterally and graded for symmetry. RESULTS. Eighty-eight globes were graded into one of four MGS categories. Nineteen (95%) of 20 globes had symmetric grades. CONCLUSIONS. The MGS provides a methodology to grade donor tissue from eye bank eyes to correspond to the AREDS classification system. Donor tissue may be used for subsequent molecular analysis, including genomics and proteomics.
AB - PURPOSE. The Minnesota Grading System (MGS) is a method to evaluate human eye bank eyes and determine the level of age-related macular degeneration (AMD), by using criteria and definitions from the Age-Related Eye Disease Study (AREDS). METHODS. Donor eyes (108 pairs) from the Minnesota Lions Eye Bank were cut circumferentially at the pars plana to remove the anterior segment. A 1000 ± 2.5-μm ruby sphere was placed on the optic nerve as a size reference. A digital, high-resolution, color macular photograph was taken through a dissecting microscope. The neurosensory retina was removed from one globe of the pair. The underlying retinal pigment epithelium was rephotographed, localizing the fovea with a proportional triangle. A grid was superimposed in the macular photographs and images were graded according to AREDS criteria. Twenty pairs were dissected bilaterally and graded for symmetry. RESULTS. Eighty-eight globes were graded into one of four MGS categories. Nineteen (95%) of 20 globes had symmetric grades. CONCLUSIONS. The MGS provides a methodology to grade donor tissue from eye bank eyes to correspond to the AREDS classification system. Donor tissue may be used for subsequent molecular analysis, including genomics and proteomics.
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U2 - 10.1167/iovs.04-0342
DO - 10.1167/iovs.04-0342
M3 - Article
C2 - 15557458
AN - SCOPUS:9444225094
SN - 0146-0404
VL - 45
SP - 4484
EP - 4490
JO - Investigative Ophthalmology and Visual Science
JF - Investigative Ophthalmology and Visual Science
IS - 12
ER -