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K. Ishikawa, H. Terasaki, Y. Ito, T. Suzuki, M. Kikuchi, H. Ohshima, Y. Miyake; Correlation between fundus microperimetric findings and visual acuity following macular translocation surgery with 360–degree retinotomy . Invest. Ophthalmol. Vis. Sci. 2004;45(13):2004.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To determine the correlation between the fundus microperimetry and the visual acuity in eyes with subfoveal choroidal neovascularization (CNV) treated by macular translocation with 360–degree retinotomy (MT). Methods: Thirty–three eyes of 33 patients with subfoveal CNV associated with age–related macular degeneration (AMD, 21 eyes) or with high myopia (12 eyes) that underwent MT were studied. Static fundus microperimetry was performed before and after MT with the Rodenstock scanning laser ophthalmoscope. Stimulus sizes equivalent to Goldmann III and Goldmann I test spots at 0 dB stimulus intensity were used. Following examination with Goldmann III before MT, AMD patients without a central scotoma were placed in group A, and those with a central scotoma in group B. Following Goldmann I testing before MT, patients in the high myopia group without a central scotoma were placed in group C, and those with a scotoma in group D. We also measured the area of the scotoma. Results: In the AMD group, the mean best corrected visual acuity (BCVA) before MT in group A (9 eyes) was 20/222, and in B (12 eyes) was 20/286. This difference was not significant (P=0.7124). After MT, the mean BCVA in groups A and B were 20/69, 20/125, respectively, and this difference was significant (P=0.0057). The visual acuity in all group A eyes had improved to 20/100 or better. In the high myopia group, the mean BCVA before MT in group C (5 eyes) was 20/125, and it was 20/286 in group D (7 eyes). This difference was not significant (P=0.2240). The mean BCVA after MT in groups C and D were 20/29 and 20/182, respectively, and this difference was significant (P=0.0041). The visual acuity in all group C eyes had improved to 20/33 or better. The area of the scotoma with Goldmann I in the high myopia group before MT ranged from 0 to 1.7 disc diameters (mean, 0.5 ± 0.2). As the scotoma area before MT was smaller, the BCVA after MT was greater(r = 0.785, P = 0.0095). In the AMD group, there was no correlation between the scotoma area and BCVA after MT. Conclusions: Measurements of the central scotoma with Goldmann III spot size may be useful in evaluating the BCVA after MT in AMD patients and with Goldmann I in high myopia patients. The scotoma area with Goldmann I was correlated with the BCVA after MT in the high myopia group.
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