Symptoms of blurred and clear vision may be caused by visual fatigue, blood in the anterior chamber, and uveitis.
Patients may experience visual fatigue after prolonged close eye use because of ciliary muscle spasm, which can lead to blurred vision, which is relieved by itself after rest, and improved vision.
Patients with anterior chamber blood accumulation if the amount of blood in the anterior chamber is small, after the activity will form bloody aqueous humor, blocking the light, which can cause the patient’s vision loss. However, after resting for some time, the blood sinks and the atrial fluid returns to be clear, and the patient’s vision can be improved, thus the patient may have the performance of sometimes clear and sometimes blurred vision.
With the fluctuation of the severity of inflammation, patients with uveitis may also experience fluctuation of vision.
It is recommended that patients with fluctuating vision consult a doctor to evaluate their condition and follow the doctor’s instructions.