Macular Sensitivity in Eyes with Central Serous Chorioretinopathy

Purpose

To determine macular sensitivity and fixation characteristics in eyes with central serous chorioretinopathy (CSC) using fundus-related microperimetry.

Methods

The authors reviewed 19 eyes with serous elevation within the central 10° due to CSC and 15 normal healthy eyes that had undergone fundus-related microperimetry. The macular sensitivity was measured using the fundus-related microperimeter, MP-1. The best-corrected visual acuity (BCVA), mean retinal sensitivity in the central 10° (central microperimetry, cMP-1) and in the paracentral 10° to 20° (paracentral microperimetry, pMP-1), and fixation stability and location were determined and compared with that of control eyes.

Results

Eyes with CSC showed significantly lower logMAR BCVA (p<0.001), cMP-1, and pMP-1 sensitivity than control eyes (p<0.001, p<0.01, respectively). Eyes with CSC were not significantly different in fixation location (p=1.00) or fixation stability than control eyes (p=0.45). Fixation location was predominantly central in all eyes with CSC; fixation was stable in 17 (89%) and relatively unstable in 2 (11%).

Conclusions

Eyes with CSC showed significantly lower retinal sensitivity not only at the central but also in the paracentral area. Even with decreased BCVA and retinal sensitivity, our patients showed central and stable fixation in their affected eyes.

Macular function by multifocal electroretinogram in diabetic macular edema after intravitreal triamcinolone acetonide injection

PURPOSE

The purpose of this study was to assess macular function by multifocal electroretinography (mfERG) in eyes with diabetic macular edema (DME) after intravitreal triamcinolone acetonide (IVTA) injection.

METHODS

Fifteen eyes of 15 patients with DME scheduled for 4 mg IVTA injection were prospectively recruited. The response to treatment was monitored functionally by visual acuity (VA) measurement and mfERG and anatomically by foveal thickness measured by optical coherence tomography (OCT). The first-order kernel P1 mfERG responses from 0 to 7 degrees (central) and 7 to 25 degrees (peripheral) were grouped and analyzed. Changes in functional parameters (VAs and the P1 mfERG response amplitudes and peak latencies) and morphometric parameters (OCT foveal thickness) in eyes with DME 1 and 3 months after IVTA injection were compared with baseline values by Student t test.

RESULTS

The mean baseline logMAR value for VAs of the patients before treatment was 0.49+/-0.26. After treatment, it was 0.27+/-0.23 at 1 month and 0.26+/-0.18 at 3 months, and differences from pretreatment values were significant (for each, p<0.001). There were statistically significant decreases in the mean foveal thickness at 1 and 3 months after treatment compared with pretreatment values (for each, p<0.001). There were also statistically significant increases in the mean P1 response amplitude for both central and peripheral groups at all examinations compared with pretreatment (for each, p<0.001). The mean P1 peak latencies for both the central and peripheral groups were shortened, but not significantly.

CONCLUSIONS

As well as the reduction in DME and improvement in VA, IVTA injection improves macular function as assessed by mfERG in diabetic patients.

Assessment of macular function by microperimetry in unilateral resolved central serous chorioretinopathy

PURPOSE

To determine macular sensitivity and fixation characteristics in patients with unilateral resolved central serous chorioretinopathy (CSC) using fundus-related microperimetry.

METHODS

We reviewed 15 eyes with resolved CSC and 15 normal healthy eyes that had undergone fundus-related microperimetry. The macular sensitivity was measured using the recently introduced fundus-related microperimeter, MP-1. The best-corrected visual acuity (VA) (BCVA), mean retinal sensitivity in the central 10 degrees (central microperimetry, cMP-1) and in the paracentral 10-20 degrees (paracentral microperimetry, pMP-1), and fixation stability and location were determined and compared with measurements in control eyes.

RESULTS

BCVA at the time of this study was 20/20 in all the affected eyes, and fundus examination and optical coherence tomography findings revealed no serous detachment. Eyes with CSC showed statistically significantly lower cMP-1 sensitivity and lower, but not significantly, pMP-1 sensitivity than control eyes (P<0.001, P=0.11, respectively). Eyes with CSC were not significantly different from control eyes in fixation location (P=1.00) or fixation stability (P=0.91). Fixation location was predominantly central in all eyes with CSC; fixation was stable in 12 (80%) and relatively unstable in 3 (20%).

CONCLUSION

Our study shows that eyes with resolved CSC can have lower retinal sensitivity in the central macula than control eyes, even after good VA has been obtained.