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Latest revision as of 22:36, 29 July 2020

Macular degeneration Microchapters

Home

Patient Information

Overview

Classification

Pathophysiology

Causes

Differentiating Macular Degeneration from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

History and Symptoms

  • Blurred vision: Those with nonexudative macular degeneration may by asymptomatic or notice a gradual loss of central vision, whereas those with exudative macular degeneration often notice a rapid onset of vision loss.
  • Central scotomas (shadows or missing areas of vision)
  • Distorted vision (i.e. metamorphopsia) - A grid of straight lines appears wavy and parts of the grid may appear blank. Patients often first notice this when looking at mini-blinds in their home.
  • Trouble discerning colors; specifically dark ones from dark ones and light ones from light ones.
  • Slow recovery of visual function after exposure to bright light.

Vision loss or blindness in macular degeneration refers to the loss of central vision only. The peripheral vision is preserved. Blindness in macular degeneration does not mean inability to see light and even with far advanced macular degeneration, the peripheral retina allows for useful vision.

The loss of central vision profoundly affects visual functioning. It is not possible, for example, to read without central vision. Pictures which attempt to depict the central visual loss of macular degeneration with a black spot do not really do justice to the devastating nature of the visual loss. This can be demonstrated by printing letters 6 inches high on a piece of paper and attempting to identify them while looking straight ahead and holding the paper slightly to the side. Most people find this surprisingly difficult to do.

References

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