By Takashi Tokoro
Pathologic myopia that's because of axial elongation reasons thinning of the retina and choroid, in particular in circumstances of posterior staphyloma. the results of this myopia is the advance of assorted varieties of chorioretinal atrophy within the posterior pole, with a gentle development of the atrophic alterations extending over a number of a long time. in the past, reports of atrophic lesions and their medical path were incomplete, and diagnostic criteria and category of chorioretinopathy were doubtful. The Atlas of PosteriorFundus alterations in Pathologic Myopia discusses those and different very important questions about the foundation of long term commentary and study. an immense characteristic of the ebook is the presentation of many case stories, with beneficiant use of full-color images to teach intimately the process fundus alterations. The atlas is effective source not just for ophthalmologists attracted to myopia yet for optometrists, opticians, and scientific students.
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Additional info for Atlas of Posterior Fundus Changes in Pathologic Myopia
The incidence of PI increases under age 40 when the axial length is longer than 32 mm. In other words, patchy atrophy will not occur in young people with short axial lengths. Eyes with PI appear in a variety of axial lengths, however, after age 40. 4% when the axial length is longer than 33 mm (Fig. 34). The relationship between axial length and Pz reveals that the incidence of Pz is low when the axial length is shorter than 29 mm. It then begins to increase from 29mm. 3% when the axial length is longer than 33 mm.
42. 024. 499. 9 28·1 28929 ·1299 3043093 1 J Ax ial Length (mm) (%) ~ 20 0--0 -5 D Eyes c. E Vi I ercentagc of Number of 20 Ey es Fig. 43. Percentage of eyes with simple macular hemorrhage in all high myopic eyes by axial length ... C. l5 E Vi 15 -5 ~ 10 ~'" -e... ~E... 5 '0 ::c ...... ·1 31 9 32 9 z :2: ;:l '" 33 & above Axial Length (mm) c-:> High myopes under 40 years old High myope. 9 abo,'o Axial Length (mm) 42 4. Explanatory Factors of Chorioretinal Atrophy Fig. 44. , more young patients have simple macular hemorrhage (Fig.
706. ,... y () >. OJ 5059 (%) (%) r:! Ll .... 0 40- OJ 0... 20 20 0 O9 J 0- 19 2029 3039 409 5059 6069 7079 D89 Age (Years) 0 O9 • 1019 2029 3039 4049 5059 6069 7079 09 Age (Yea r ) Fig. 7. Scattergrams of patchy atrophy by age. 1 Neovascular Macular Hemorrhage (Choroidal Neovascular Membrane) Choroidal neovascular membrane is an important factor in determining the prognosis of visual acuity in pathologic myopia [35,36]. 6% in 128 eyes. 8%) had MA. 4% of all pathologic myopic eyes). 7% reported in the national survey conducted by a research group 28 4.