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History of Ophthalmology
Harold E. . Ed(S): Henkes
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Description for History of Ophthalmology
Paperback. Editor(s): Henkes, Harold E. Series: History of Ophthalmology. Num Pages: 150 pages, biography. BIC Classification: MJQ. Category: (UU) Undergraduate. Dimension: 235 x 155 x 9. Weight in Grams: 310.
When the eyeball is indented in total darkness, within less than 200 mil liseconds an oval or quarter-moon shaped spot of light is perceived in the part of the visual field corresponding to the indented region of the retina. In the seconds following, this phosphene extends across the whole visual field and alters in structure during further eyeball indentation. It is then seen as irregular large bright spots of light, finely structured moving light grains ('light nebula') and stationary bright stars. Regular geometrical patterns appear only when both eyes are indented simultaneously [1]. When the eyeball deformation is released, part ... Read more
When the eyeball is indented in total darkness, within less than 200 mil liseconds an oval or quarter-moon shaped spot of light is perceived in the part of the visual field corresponding to the indented region of the retina. In the seconds following, this phosphene extends across the whole visual field and alters in structure during further eyeball indentation. It is then seen as irregular large bright spots of light, finely structured moving light grains ('light nebula') and stationary bright stars. Regular geometrical patterns appear only when both eyes are indented simultaneously [1]. When the eyeball deformation is released, part ... Read more
Product Details
Format
Paperback
Publication date
1990
Publisher
Kluwer Academic Publishers United States
Number of pages
150
Condition
New
Series
History of Ophthalmology
Number of Pages
150
Place of Publication
Dordrecht, Netherlands
ISBN
9780792308263
SKU
V9780792308263
Shipping Time
Usually ships in 15 to 20 working days
Ref
99-15
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