Trouble reading things close up but fine with reading at a distance? Does reading a book give you a headache?
If so, you may be farsighted or have an eye condition known as hyperopia. Farsightedness can cause the eyes to exert extra effort to see close up. Symptoms may vary depending on the amount of hyperopia. After viewing nearby objects for an extended period, blurred vision, headaches and eyestrain may occur. Other vision disorders can also contribute to these symptoms. Consult your eye care professional for proper diagnosis and treatment.
Farsightedness isn’t a disease, nor does it mean that you have "bad eyes". It refers to a mismatch in the focusing power of your eyes in comparison to the length of your eyeball. The degree of variation will determine whether or not you will need corrective lenses.
Speak to your eye care professional to learn more.