Early glaucoma patients may have darkened vision at night, but the exact symptoms are related to the progression of the disease. Early glaucoma patients will initially experience changes in the visual field, with small dark spots appearing in the field of vision. Patients may also experience a gradual decrease in visual acuity, which may result in blurred vision. When the condition of early glaucoma patients gradually aggravates, they will see things more and more dark at night, which is mainly due to the aggravation of optic nerve damage. When the patient’s condition is serious, it is easy to cause obvious defects in the visual field, so the range that can be seen clearly is relatively small. When the patient’s intraocular pressure increases, the patient may also experience discomfort symptoms such as photophobia, iris vision, eye swelling and pain. It is recommended that patients with glaucoma consult a doctor in a timely manner to assess their condition and follow the doctor’s instructions for treatment to avoid delays.