Purchase this article with an account.
Hiroko Terasaki, Yozo Miyake, Toshimitsu Suzuki, Takashi Niwa, Chang-Hua Piao, Satoshi Suzuki, Makoto Nakamura, Mineo Kondo; Change in Full-Field ERGs after Macular Translocation Surgery with 360° Retinotomy. Invest. Ophthalmol. Vis. Sci. 2002;43(2):452-457.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
purpose. One of the methods used in macular translocation (MT) surgery for
subfoveal neovascularization is to create a temporary total retinal
detachment followed by a 360° retinotomy. The whole retina is
then shifted from the original surface of the retinal pigment
epithelium (RPE), resulting in an unusual retina and RPE complex. The
purpose of this study was to assess retinal function after MT surgery.
methods. Full-field electroretinograms (ERGs) were recorded before and 4 to 8
months (mean, 5.4 months) after MT surgery with a 360° retinotomy in
15 consecutive patients with age-related macular degeneration (10
eyes), high myopia (4 eyes), and polypoidal choroidal vasculopathy (1
eye). Their ages ranged from 57 to 74 years. The angle of rotation of
the retina ranged from 18° to 45° (mean ± SE, 30 ±
2°). In addition to the recording of the standard rod and mixed
rod–cone ERGs after 30 minutes of dark adaptation, the cone single
flash and 30-Hz flicker ERGs were recorded immediately after a
light-adapting background was turned on (LA0) and also
after 10 minutes of light adaptation (LA10).
results. The mean amplitude of the full-field ERGs was reduced after surgery by
44% for the rod response, by 24% for the mixed rod–cone b-wave, by
12% and 35% for the cone single-flash b-wave at LA0 and
30-Hz flicker ERGs at LA0, respectively. The mean implicit
times were delayed by 8 msec for the rod response, by 2 msec for the
mixed rod–cone oscillatory potential (OP1), by 4 msec for the cone
single-flash b-wave at LA0, and by 6 msec for the 30-Hz
flicker at LA0.
conclusions. These results demonstrated a functional alteration in both the rod and
cone components of the ERGs for the entire retina after MT
This PDF is available to Subscribers Only