Table 2.
Comparison of visual light sensitivity Questionnaire-8 (VLSQ-8) pre/post botulinum toxin A injection.
| Patient 1 | Patient 2 | Patient 3 | Patient 4 | ||
|---|---|---|---|---|---|
| Q1. In the past month, how often did you have visual light sensitivity outdoors during daylight? | Pre | 5 | 5 | 4 | 4 |
| Post | 3 | 3 | 3 | 2 | |
| Q2. In the past month, how often did you have a sense of glare in your eyes? | Pre | 5 | 5 | 4 | 3 |
| Post | 2 | 3 | 3 | 2 | |
| Q3. In the past month, how often did you have visual light sensitivity from flickering lights or bright colors? | Pre | 3 | 5 | 4 | 4 |
| Post | 2 | 3 | 4 | 2 | |
| Q4. Please rate the severity of the worst visual light sensitivity you experienced in the past month. | Pre | 5 | 5 | 5 | 4 |
| Post | 3 | 3 | 4 | 3 | |
| Q5. When you have sensitivity to light, do you also experience headache? | Pre | 1 | 5 | 3 | 3 |
| Post | 1 | 3 | 3 | 2 | |
| Q6. When you have sensitivity to light, how often is your vision blurry? | Pre | 1 | 5 | 2 | 2 |
| Post | 1 | 2 | 1 | 2 | |
| Q7. How often does sensitivity to light limit your ability to read, watch TV, or use the computer? | Pre | 5 | 5 | 4 | 4 |
| Post | 5 | 3 | 2 | 3 | |
| Q8. In the past month, how often did you need to wear dark glasses on cloudy days or indoors? | Pre | 5 | 5 | 4 | 2 |
| Post | 5 | 3 | 1 | 2 | |
| Total VLSQ-8 (scale 8–40) | Pre | 30 | 40 | 30 | 26 |
| Post | 22 | 23 | 21 | 18 | |
All questions except Question 4 were answered as 1 (never), 2 (rarely), 3 (sometimes), 4 (often), or 5 (always). Question 4 was answered from 1 to 5 with 1 as none, 3 as moderate, and 5 as severe.