retinitis pigmentosa 3
Post on 06-May-2015
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- 1.Central artery occlusion
- Sudden, painless and complete loss of vision in one eye
2. Branch artery occlusion
- Sudden, painless, partial loss of vision in one eye
3. Detection and Diagnosis
- Artery occlusion is diagnosed by examining the retina with anophthalmoscope .
- Unfortunately, there is no treatment that can consistently restore vision lost from an artery occlusion.However, if it is caught within the first hour and treatment is initiated immediately , recovery is possible in rare cases.
- The following conditions increase the risk of vessels of the eye:
- High cholesterol
- H eart disease
5. Retinal Detachment
- A retinal detachment occurs when the retinas sensory and pigment layers separate.
- There are three types of retinal detachments.
Retinal DetachmentA retinal detachment occurs when the retinas sensory and pigment layers separate.There are three types of retinal detachments. 6. Retinal Detachment: Vitreoretinal Traction
- Dynamic traction
- Static Traction
7. Retinal Tear and Detachment
- Retinal tears commonly occur when there is traction on theretinaby thevitreousgel inside the eye.
8. Signs and Symptoms
- Light flashes
- Wavy, or watery vision
- Veil or curtain obstructing vision
- Shower of floaters that resemble spots, bugs, or spider webs
- Sudden decrease of vision
9. Detection and Diagnosis
- Retinal detachments are usually found:
- calls the doctors office critical early,
- early treatment improve restoring vision.
- thoroughlyophthalmoscopy .
- The macula is responsible for the central vision.
- Ultrasound imaging
- The appropriate treatment depends on the type, severity and location of the detachment.
- Pneumatic retinopexy
- scleral buckle .
- other types of retinal detachment surgeries are either inappropriate or unsuccessful ,
- vitreous gel is removed and replaced
TreatmentThere are a number of ways to treat retinal detachment. The appropriate treatment depends on the type, severity and location of the detachment.Pneumatic retinopexy scleral buckle .other types of retinal detachment surgeries are either inappropriate or unsuccessful , The vitreous gel is removed and replaced with silicone oil. 11. Whatwecan do
- What you can do
- Early detection
- Awareness of vision
- higher-risk group nearsighted or diabetic.
- Compare the vision of your eyes daily
- Notify your doctor immediately if notice any of the following:
- An obstruction of peripheral vision (veil, shadow, or curtain)
- Sudden shower of floaters
- Light flashes
- Spider webs
12. Retinitis pigmentosa
- D iagnosed during childhood when the symptoms begin to become apparent.
- However, depending on the progression of the disease, it may not be detected until later in life.
13. Retinitis pigmentosa
- Signs and Symptoms
- Difficulty seeing dim lighting
- Tendency to trip easily or bump into objects when in poor lighting
- Gradual loss of peripheral vision
- Loss of contrast sensitivity
- Eye fatigue (from straining to see)
Signs and Symptoms Difficulty seeing dim lightingTendency to trip easily or bump into objects when in poor lightingGradual loss of peripheral visionGlareLoss of contrast sensitivityEye fatigue (from straining to see) 14. Detection and Diagnosis
- Retinitis pigmentosa is usually diagnosed before adulthood.
- often the patient complains of difficultly with night vision.
- The diagnoses by examining the retina with an ophthalmoscope
- The classic sign of RP "bone-spicules.
- E lectroretinography (ERG).
- There is currently no standard treatment or therapy for retinitis pigmentosa;
- however,scientists have isolated several genes responsible for the disease.
- Once RP is discovered, patients and their families are encouraged to seek genetic counseling.
16. Current Research
- Scientists at Johns Hopkins University are developing a micro-computer chip prosthesis called the Multiple-unit Artificial Retina Chipset (MARC).
- Once implanted in the retina, the chip transmits images to the brain that are captured from a small camera mounted on the patient's glasses.
- The chip is still in development and is not yet available for widespread use.
- Doctors continue to search for treatments for RP but have yet to find a cure.