9 common signs that may indicate a need for glasses:

1. Blurry Vision: Difficulty seeing things clearly, especially objects at a distance or close-up, can be a sign of refractive errors like nearsightedness, farsightedness, or astigmatism.

2. Eye Strain: Experiencing eye strain, headaches, or fatigue after reading, using digital devices, or doing close-up work might indicate an underlying vision problem.

3. Squinting: Squinting is a natural response to try to improve focus and clarity. If you find yourself squinting frequently to see things clearly, it might signal a need for vision correction.

4. Double Vision: Seeing double or overlapping images can indicate problems with eye alignment or refractive errors that might require glasses.

5. Difficulty Seeing at Night: Trouble seeing in low-light conditions or experiencing halos around lights can be indicative of vision issues such as myopia (nearsightedness) or other eye conditions.

6. Frequent Headaches: Persistent headaches, especially after visual tasks, can be linked to uncorrected vision problems causing eye strain.

7. Changes in Reading Habits: If you find yourself holding reading material farther away or closer than usual to see it clearly, it might suggest a change in your vision.

8. Difficulty Seeing While Driving: Trouble reading road signs, judging distances, or experiencing glare while driving, particularly at night, could be a sign of poor vision.

9. Eye Rubbing: Frequent rubbing of the eyes might indicate eye fatigue due to strain, possibly caused by uncorrected vision problems.