Table 3.
Difference in Mean logMAR VA, LogCS, and LogVF Diameter According to Photopsias' Characteristics
| Photopsia Characteristics | VA | 95% CI | P | CS | 95% CI | P | log VF | 95% CI | P |
|---|---|---|---|---|---|---|---|---|---|
| Located only/mostly in areas with vision (n = 13) | 0.38 | (0.17 to 0.59) | 0.99 | (0.61 to 1.36) | 1.28 | (1.12 to 1.44) | |||
| Located only/mostly in vision loss (n = 19) | 0.11 | (−0.02 to 0.23) | 1.56 | (1.32 to 1.81) | 1.60 | (1.40 to 1.80) | |||
| Difference in means | −0.27 | (−0.04 to 0.51) | 0.03* | 0.57 | (0.15 to 1.00) | 0.01* | 0.32 | (0.07 to 0.56) | 0.01* |
| Located only in peripheral areas (n = 10) | 0.09 | (−0.06 to 0.25) | 1.67 | (1.42 to 1.91) | 1.66 | (1.32 to 2.00) | |||
| Located in some or only central areas (n = 22) | 0.28 | (0.12 to 0.43) | 1.18 | (0.89 to 1.47) | 1.39 | (1.24 to 1.54) | |||
| Difference in means | 0.18 | (−0.03 to 0.39) | 0.09 | −0.49 | (−0.13 to −0.85) | 0.01* | 0.27 | (−0.08 to 0.63) | 0.12 |
| Located across larger areas over time (n = 9) | 0.40 | (0.14 to 0.67) | 1.02 | (0.51 to 1.53) | 1.40 | (1.10 to 1.70) | |||
| Stable over time (n = 23) | 0.15 | (0.02 to 0.27) | 1.45 | (1.20 to 1.69) | 1.50 | (1.33 to 1.66) | |||
| Difference in means | −0.26 | (0.02 to 0.54) | 0.07 | 0.43 | (−0.11 to 0.97) | 0.11 | 0.10 | (−0.24 to 0.43) | 0.54 |
| Increased brightness over time (n = 6) | 0.38 | (0.16 to 0.60) | 0.87 | (0.29 to 1.44) | 1.26 | (0.97 to 1.54) | |||
| Stable brightness over time (n = 26) | 0.18 | (0.05 to 0.32) | 1.44 | (1.20 to 1.68) | 1.52 | (1.36 to 1.68) | |||
| Difference in means | −0.20 | (0.03 to −0.43) | 0.09 | 0.57 | (0.003 to 1.14) | 0.049* | 0.26 | (−0.04 to 0.56) | 0.09 |
| Increased frequency over time (n = 15) | 0.32 | (0.14 to 0.51) | 1.14 | (0.76 to 1.53) | 1.43 | (1.21 to 1.64) | |||
| No change in frequency over time (n = 17) | 0.13 | (−0.02 to 0.28) | 1.49 | (1.23 to 1.75) | 1.50 | (1.30 to 1.70) | |||
| Difference in means | −0.19 | (0.03 to −0.42) | 0.09 | 0.35 | (−0.09 to 0.80) | 0.12 | 0.07 | (−0.21 to 0.36) | 0.60 |
| Increased awareness over time (n = 18) | 0.35 | (0.17 to 0.53) | 1.11 | (0.80 to 1.42) | 1.42 | (1.24 to 1.60) | |||
| No change in awareness over time (n = 14) | 0.05 | (−0.05 to 0.16) | 1.61 | (1.33 to 1.90) | 1.54 | (1.29 to 1.78) | |||
| Difference in means | −0.29 | (−0.10 to −0.49) | 0.005* | 0.51 | (0.10 to 0.91) | 0.02* | 0.12 | (−0.17 to 0.41) | 0.41 |
Differences in means were analyzed with two-sample t-tests.
*
Statistically significant (P < 0.05).