Retinitis pigmentosa: A group of inherited disorders in which abnormalities of the photoreceptors (the rods and cones) of the retina lead to progressive visual loss. Abbreviated RP. People with RP first experience defective dark adaptation (night blindness), then constriction of the visual field (tunnel vision), and eventually, late in the course of the disease, loss of central vision.
What are the symptoms of retinitis pigmentosa?
Other forms of RP, sometimes called cone-rod dystrophy, first affect central vision. Patients first experience a loss of central vision that cannot be corrected with glasses or contact lenses. With the loss of cone cells also comes disturbances in color perception. As the disease progresses, rod cells degenerate causing night blindness and peripheral vision.
Symptoms of RP are most often recognized in children, adolescents and young adults, with progression of the disease continuing throughout the individual’s life. The pattern and degree of visual loss are variable.
They include decreased vision at night or in low light and loss of side vision (tunnel vision).
Retinitis Pigmentosa Visual Field
▪ Loss of peripheral vision
▪ Night blindness
▪ Tunnel Vision
▪ Blurred Vision the sidesn
▪ Problems of perception to drive
▪ Inability to discriminate color
Sources ( * National Institutes of Health, Foundation Fighting Blindness )
An estimated 100,000 people in the U.S. have RP, mainly caused by gene mutations (variations) inherited from one or both parents.
Low Vision Aids for Retinitis Pigmentosa (RP)
▪ Bar Magnifier
▪ Yellow Filters
▪ Video Magnifier System
The main feature to increase font size in only one direction, these bars allow prolonged reading without eye strain. Reading bars are particularly suitable for very wide lines read printed with computer printer
Information provided on Low Vision Miami is intended for divulgative use only and is not a substitute for professional medical advice. If you have any concerns about your visual health, please contact your doctor.