Clinical evaluation of macular Disease

CLINICAL EVALUATION OF MACULAR DISEASE

• The macula is a round area at the posterior pole of eye.

• It measures between about 5 and 6 mm in diameter.

• Histologically, it shows more than one layer of ganglion cells, in contrast to the single ganglion cell layer of the peripheral retina.

• The inner layers of the macula contain the yellow xanthophyll pigments lutein and zeaxanthin in far higher concentration than the peripheral retina.

• The name of macula lutea means yellow plaque.

Symptomes of macular eye disease


Symptomes of macular eye disease

• Diminish vision and difficulty with close work may be an early symptom of macular disease. The macular Disease onset can be rapid in some conditions like as in CNV.

Scotoma : in which patients complain of something obstructing central vision, is a symptom of more severe macular disease. 

This is in contrast to optic neuropathy, which typically causes a missing area in the visual field.

Metamorphopsia means distortion of perceived images is a very common symptom that is virtually never present in optic neuropathy.

Micropsia means decrease in image size is caused by spreading apart of foveal cones and is less common.

Macropsia means increase in image size is due to crowding together of foveal cones and it is rare occurrence symptoms.

Colour discrimination may be disturbed but is generally less evident than in even relatively mild optic neuropathy.

Difficulties related to dark adaptation, such as poor vision in dim light and persistence of after-images, may occur.

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