Blurred or dim vision while looking at the board is usually due to focusing issues or eye strain affecting clarity. Try sitting closer, ensure good lighting, take regular breaks, and avoid pressing or rubbing your eyes to reduce strain. Keep your eyes relaxed, blink often, and maintain a proper study routine. If this keeps happening or affects your reading, consult a doctor to check your eyesight and get the right correction.

Vision becoming dim at certain times can be due to eye strain, dryness, low blood sugar, or changes in blood pressure affecting the eyes. Rest your eyes, reduce screen time, stay hydrated, eat regular meals, and ensure good lighting to maintain clear vision. Avoid skipping meals, and note whether it happens at a specific time or during certain activities. If it keeps happening or worsens, consult a doctor to check the cause and guide proper treatment.

If your eye feels weak or your vision is changing, you should see an eye doctor (ophthalmologist) as soon as possible for a thorough examination. This may be caused by simple eye strain, refractive errors, or underlying conditions such as glaucoma or optic nerve issues. Avoid straining your eyes, ensure proper lighting, and do not self-medicate until a doctor evaluates you. Early assessment is important to prevent worsening and guide appropriate treatment.