The evaluation of a vision change requires a history and complete eye examination.

Physical findings in someone with a vision change may include:

• Abnormal retina
• Abnormal visual acuity

Tests are necessary to confirm the diagnosis of a vision change.

Tests that may be used to evaluate a vision change includes:

• Visual acuity measurement
• Slit lamp examination
• Vision refraction testing
• Perimetry:
• Glaucoma screening
• Checks the entire visual field
• Funduscopic examination:
• Normal retina
• Glaucoma retina
• Gonioscopy:
• A special lens is used to examine the flow of fluid through the eye.
• Intraocular pressure measurement:
• Measures the pressure in the anterior chamber of the eye