Table 3: Self-reported symptoms and ophthalmic findings (N = 73).
|
Parameter |
n (%) |
|
Self-Reported Vision Changes |
|
|
No vision changes since starting ethambutol |
63 (86.3) |
|
Vision changes since starting ethambutol |
10 (13.7) |
|
Self-Reported Symptoms of Ocular Toxicity |
|
|
No symptoms |
63 (86.3) |
|
Blurred central vision |
5 (6.8) |
|
Difficulty reading |
2 (2.7) |
|
Dryness |
2 (2.7) |
|
Headache |
1 (1.4) |
|
Visual Acuity (OD) |
|
|
6/6 |
69 (94.5) |
|
6/9 |
1 (1.4) |
|
6/12 |
1 (1.4) |
|
6/18 |
1 (1.4) |
|
6/24 |
1 (1.4) |
|
After refraction: returned to 6/6 |
69 (94.5) |
|
After refraction: remained 6/24 |
1 (1.4) |
|
Visual Acuity (OS) |
|
|
6/6 |
70 (95.9) |
|
6/12 |
1 (1.4) |
|
6/18 |
2 (2.7) |
|
Color Vision |
|
|
Normal (OD) |
72 (98.6) |
|
Abnormal (OD) |
1 (1.4) |
|
Normal (OS) |
72 (98.6) |
|
Abnormal (OS) |
1 (1.4) |
|
Pupil Reaction |
|
|
Normal (OD) |
72 (98.6) |
|
Sluggish (OD) |
1 (1.4) |
|
Normal (OS) |
72 (98.6) |
|
Sluggish (OS) |
1 (1.4) |
|
Normal (OS direct + consensual) |
73 (100) |
|
Intraocular Pressure |
|
|
Normal (≤ 21 mmHg) |
73 (100) |
|
Fundoscopy |
|
|
Normal |
72 (98.3) |
|
Abnormal |
1 (1.7) |
|
Other Eye Diseases |
|
|
None |
58 (79.5) |
|
Dryness |
3 (4.1) |
|
Pterygium |
1 (1.4) |
|
Other |
11 (15.1) |
|
Additional Investigations Required |
|
|
No |
68 (93.2) |
|
Yes |
5 (6.8) |