| Type | MGI:General | Description | rod-mediated ERGs indicate loss of Vmax (the maximum saturated b-wave amplitude) and an elevation of k (the semi-saturation intensity) with increasing age by ~12 months, the Vmax amplitude is less than 10% of the value noted at 1 month while k is more than doubled however, at 2.5 months, rod sensitivity to light is unaffected in surviving photoreceptors, suggesting that Ca2+ homeostasis in the outer segment is normal |
