The anamnesis (medical history) represents an important component in the diagnosis of color vision disorders. Family history Are there any disorders of the eyes in your family that are common? Are there any hereditary diseases in your family? Social history What is your profession? Are you exposed to harmful working substances in your profession? Current … Color Vision Disorders: Medical History
Eyes and eye appendages (H00-H59). Achromatopsia or achondroplasia – total color blindness, meaning that no colors can be perceived, only contrasts (light-dark). Deuteranomalie (green weakness). Deuteranopia (green blindness) Acquired color vision disorders Complete color blindness Protanomaly (red deficiency) Protanopia (red blindness Tritanomaly (blue-yellow weakness) Tritanopia (blue blindness)
The following are the most important diseases or complications that can be caused by color vision disorders: Restrictions in the choice of profession (bus driver, police officer). Problems in road traffic
A comprehensive clinical examination is the basis for selecting further diagnostic steps: General physical examination – including blood pressure, pulse, body weight, height. Ophthalmic examination (examination of the eye with a slit lamp, determination of visual acuity and determination of refraction (examination of the refractive properties of the eye); stereoscopic findings of optic disc (area … Color Vision Disorders: Examination
Laboratory diagnosis is usually not required.
Obligatory medical device diagnostics. Color vision tests such as. Color charts according to Ishihara (Ishihara test). Anomaloscope according to Nagel Farnsworth test Panel D15 test Perimetry (visual field measurement) Optional medical device diagnostics – depending on the results of the medical history, physical examination, laboratory diagnostics and mandatory medical device diagnostics – for differential diagnostic … Color Vision Disorders: Diagnostic Tests
The following symptoms and complaints may indicate color vision disorders: Congenital color vision disorders are often not noticed by the affected person until later in life In the case of complete color blindness, visual acuity is also reduced Deuteranomaly (green deficiency) Weakened color perception of the color “green” (it is a form of red-green weakness). … Color Vision Disorders: Symptoms, Complaints, Signs
Pathogenesis (development of disease) Two types of light-sensitive cells are found on the retina. Rods are responsible for twilight and night vision. Rods are significantly more sensitive to light than cones. Cones mediate day vision, color vision, and resolving power. Red, green and blue cones can be distinguished. In color vision impairment, the sensitivity of … Color Vision Disorders: Causes
General measures Depending on the color vision disorder, specially coated glasses can be adapted
