
Visual disturbances
- A diminished ability to see.

Amblyopia ex anopsia

Amblyopia unspecified
- impairment of vision without detectable organic lesion of the eye.
- An optically uncorrectable loss of visual acuity without apparent organic change or defect.

Strabismic amblyopia

Deprivation amblyopia

Refractive amblyopia

Subjective visual disturbances

Subjective visual disturbance unspecified

Sudden visual loss

Transient visual loss

Visual discomfort
- A condition in which the eyes are more sensitive to light than normal.
- Fear and avoidance of light. It can be the result of anxiety about the eyes, photosensitivity, or photalgia.--2004

Visual distortions of shape and size

Other visual distortions and entoptic phenomena
- Hazy ring around bright lights seen by some patients with refractive error or optical defects, e.g. cataracts, or corneal swelling.

Psychophysical visual disturbances
- An inability to recognize or interpret objects by sight.
- A visual agnosia usually due to brain damage and characterized by an inability to recognize familiar faces, and in some cases, one's own face.

Diplopia
- The condition in which a single object appears as two objects. Also called "double vision." (from medterms.com)

Other disorders of binocular vision

Binocular vision disorder unspecified
- Any inability to efficiently utilize and/or sustain binocular vision.

Suppression of binocular vision

Simultaneous visual perception without fusion

Fusion with defective stereopsis

Abnormal retinal correspondence

Visual field defects
- localized defect in the visual field bordered by an area of normal vision.

Visual field defect unspecified
- localized defect in the visual field bordered by an area of normal vision.

Scotoma involving central area

Scotoma of blind spot area

Sector or arcuate visual field defects

Other localized visual field defect
- localized defect in the visual field bordered by an area of normal vision.

Generalized visual field contraction or constriction

Homonymous bilateral field defects

Heteronymous bilateral field defects

Color vision deficiencies
- partial or total inability to distinguish one or more chromatic colors.
- The absence of or defect in the perception of colors.

Protan defect

Deutan defect

Tritan defect

Achromatopsia

Acquired color vision deficiencies

Other color vision deficiencies

Night blindness
- failure or imperfection of vision at night or in dim light, with good vision only on bright days.
- An inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder.
- Nyctalopia; inability to see clearly in dim light.

Night blindness unspecified
- failure or imperfection of vision at night or in dim light, with good vision only on bright days.
- An inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder.
- Nyctalopia; inability to see clearly in dim light.

Congenital night blindness

Acquired night blindness

Abnormal dark adaptation curve

Other night blindness

Other specified visual disturbances
- Blurred vision is the loss of visual acuity (sharpness of vision) resulting in a loss of ability to see small details. (from MedlinePlus Medical Encyclopedia)

Unspecified visual disturbance
- A diminished ability to see.