الفهرس 
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Abstract
Although myopia can be treated easily by means of vision
correction, but it represents one of the risk factors of blindness, especially
in cases of high myopia.
Pathologic or high myopia is defined as a refractive error of −6.00
diopters (D) or greater and an axial length exceeding 26 mm.
Pathologic myopia is associated with progressive elongation of the
globe, which may be accompanied by degenerative changes in the sclera,
choroid, Bruch’s membrane, retinal pigment epithelium (RPE), and
neurosensory retina.
These findings consist of dehiscence of retinal layers known as
retinoschisis, paravascular inner retinal cleavage, cysts and lamellar holes,
peripapillaryintrachoroidal cavitation, tractional internal limiting
membrane detachment, macular holes (lamellar and full thickness),
posterior retinal detachment, and choroidalneovascular membranes.
OCT enables us to understand changes that happened in macula of
highly myopic patients and reveal undetectable retinal changes in
asymptomatic patients.
The aim of this study is to detect macular findings in retina of
patients with high axial myopia using specteral domain optical coherence
tomography (SD-OCT) and to correlate these findings with refractive
state, axial length and visual acuity.
This study included 100 eyes of 60 subjects with high axial
myopia carried out at the Department of Ophthalmology, Menoufia
University, Egypt between August 2015 and August 2016.
All subjects underwent complete ophthalmic examination, axial
length measurement and macular OCT examination.
This study concluded that normal macula in high axial myopia is
common and was found in (43) cases and there may be one or more
pathological finding in (57) cases.
There is no specific macular finding for a given refractive state or
axial length. Macular scar and CNV are associated with the worst visual
acuity.
This study recommended that OCT is an important investigation in
subjects with high axial myopia.