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. Author manuscript; available in PMC: 2013 Oct 19.
Published in final edited form as: Arch Ophthalmol. 2012 Oct;130(10):1301–1308. doi: 10.1001/archophthalmol.2012.1906

Table 2.

Full-Field Electroretinographic Findings in Left Eyes of Family Members Studied

Amplitude, μV/Implicit Time, msa
Subject No./
Age at Visit, y		 Dim Scotopic
(Rod)
B-Wave		 Bright Scotopic
(Combined)
A-Wave		 Bright Scotopic
(Combined)
B-Wave		 Single-Flash
Photopic (Cone)
A-Wave		 Single-Flash
Photopic (Cone)
B-Wave		 30-Hz Flicker
Photopic
(Cone)
III-1/64 177.1/97 154.0/17 310.3/52 34.3/16 108.0/32 85.1/28
IV-1/45 ND ND ND ND ND ND
IV-3/36 ND ND ND ND ND ND
IV-4/32 ND ND ND ND ND ND

Abbreviation: ND, not detectable at criterion levels of 3 μV for all responses except for 30-Hz photopic flicker, where the criterion was 0.1 μV.

a

Normal mean (SD) electroretinographic dim scotopic b-wave amplitude is 281 (70) μV; mixed scotopic a-wave amplitude, 210 (54) μV; mixed scotopic b-wave amplitude, 422 (100) μV; single-flash cone a-wave amplitude, 38 (11) μV; single-flash cone b-wave amplitude, 147 (46) μV; and 30-Hz flicker cone amplitude, 120 (36) μV. Normal mean (SD) dim scotopic b-wave timing is 95 (7) milliseconds; mixed scotopic a-wave timing, 19 (3) milliseconds; mixed scotopic b-wave timing, 53 (3) milliseconds; single-flash cone a-wave timing, 15 (1) milliseconds; single-flash cone b-wave timing, 32 (2) milliseconds; and cone flicker timing, 28 (2) milliseconds.