is a term that refers to non-inflammatory retinal abnormality.
Retinal degeneration and retinal detachment are forms of
retinopathy. Causes of retinal degeneration may be hereditary,
such as retinitis pigmentosa, or may be a comorbid factor
of another disease, such as diabetes. Individuals with hypertension
or a history of intravenous drug use are also susceptible
to developing retinopathy. Symptoms of retinopathy include
blurred vision, color disturbances, and loss of night vision.
Patients with retinopathy often experience a blind spot
in their visual field, called a scotoma.
does retinopathy affect vision?
retina is a network of cells at the back of the eye that
converts images from the optical system into electrical
impulses that are transmitted through the optic nerve to
the brain. Rod and cone cells are two types receptor cells
found in the retina. Cones are light-sensitive cells that
deliver sharp visual acuity and color discrimination. Rods
are specialized to work at low levels of light, especially
for night vision. When retinal abnormality occurs, the function
of retinal cells is disturbed, and visual perception is
altered in a manner similar to depicted below.
is a simulation of vision with retinal abnormality. Notice
the scotomas and poor acuity in the view with retinopathy
compared to the normal view.
treatment is available for retinitis pigmentosa. A detached
retina can be reattached to the pigment epithelium with
a laser, if detected early enough. There are several treatments
for diabetic retinopathy, depending on the stage of the
disease. Treatments for diabetic retinopathy include laser
photocoagulation, panretinal photocoagulation, and vitrectomy.
| Cézanne | Degas
| El Greco | Monet
| Renoir | Van