Skip to main content
. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: Retina. 2009 May;29(5):613–617. doi: 10.1097/IAE.0b013e3181a2c07a

Table 2.

Change in Visual Acuity, Optical Coherence Tomography (OCT), Fluorescein Angiography (FA) and Stereoscopic Color Fundus Photograph Characteristics from Baseline to 12 Months After Focal/Grid Photocoagulation - median (25th, 75th percentiles) or N (%)

Eyes with Non-Center
Involved CSME
N = 22a
Visual acuity letter score −1 (−5, +2)

 ≥ 15 letters improvement 0
 10-14 letters improvement 1 (5%)
 5 - 9 letters improvement 3 (14%)
 within ± 4 letters 11 (50%)
 5 - 9 letters worse 4 (18%)
 10-14 letters worse 1 (5%)
 ≥ 15 letters worse 2 (9%)
OCT characteristics
Central subfield (microns) −10 (−16, +13)
Total macular volumeb (mm3) −0.2 (−0.5, +0.1)
Mean inner zone/center
unweighted thicknessc
 (microns)
−8 (−20, +13)
Inner zone volumed (mm3) −0.1 (−0.1, +0.1)
Mean unweighted thickness
within the gride (microns)
−4 (−18, +8)
Max inner subfield
thicknessf (microns)
−12 (−27, +11)
Excluding the Central Subfield:
Mean inner zone subfields
thicknessg (microns)
−9 (−23, +15)
Mean outer zone subfields
thicknessh (microns)
−4 (−15, +19)
Fluorescein angiography
characteristics - Disc Areas
Fluorescein leakage
within the gridi
−0.70 (−2.06, +0.16)
Cystoid abnormality
within the gridj
0 (0, 0)
Capillary loss
within the gridk
0 (0, +0.01)
Fundus photograph
characteristics
DME area within the grid -
 disc areas
+0.21 (−0.47, +5.05)
ETDRS severity scale
  ≥ 2 levels better 0
  Within 1 level 15 (68%)
  ≥ 2 levels worse 7 (32%)
a

Excludes 2 subjects who did not complete 12 month visit

b

Missing for 6 eyes

c

Mean thickness of central subfield and 4 inner subfields, Equal weight to all 5 zones. Missing for 2 eyes

d

Missing for 5 eyes

e

Mean thickness of central subfield, 4 inner subfields, and 4 outer subfields. Equal weight to all 9 zones. Missing for 2 eyes

f

Maximum of central subfields and 4 inner subfields

g

Mean thickness of 4 inner subfields (excluding the center), Missing for 2 eyes

h

Mean thickness of 4 outer subfields (excluding the inner and center), Missing for 2 eyes

i

Missing for 4 eyes

j

Missing for 4 eyes

k

Missing for 8 eyes