Table 1. Distribution of eyes classified according to the MacTel Classification System (Chew et al.3) at baseline and final visits .
|
Stage |
Classification of macular telangiectasia type 2 (MacTel) |
Number of eyes at baseline visit (%) |
Number of eyes at final visit (%) |
|
0 |
No EZ break/no pigmentation/no OCT HR |
26 (14.1) |
17 (9.2) |
|
1 |
Non-central EZ break/no pigment/no Oct HR |
30 (16.3) |
10 (5.4) |
|
2 |
Central EZ break/no pigment/no OCT HR |
62 (33.7) |
49 (26.6) |
|
3 |
Non-central pigment/no, non-central or central EZ loss/no OCT HR |
4 (2.2) |
8 (4.3) |
|
4 |
OCT HR/EZ break (either central or non-central)/no pigment |
37 (20.1) |
29 (15.8) |
|
5 |
Central pigment/no exudative neovascularization/EZ present or not gradable |
9 (4.9) |
42 (22.8) |
|
6 |
Neovascularization (exudative) ± central pigment |
16 (8.7) |
29 (15.8) |
EZ: Ellipsoid zone, HR: Hyperreflectivity, OCT: Optical coherence tomography