الفهرس 
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Abstract
Myopia is defined as the optical condition of the non-accommodating eye, in which parallel rays of light entering the eye are brought to a focus in front of the retina.
It may be classified by etiology (refractive or axial) , by clinical entity: simple myopia, nocturnal myopia, pseudo myopia, degenerative myopia, and induced (acquired) myopia. Other systems classify myopia by degree (i.e., low, medium, or high) or by age of onset (i.e., congenital, youth onset, early adult-onset, and late adult-onset).
The aim of our study was correlating between the macular thickness and axial length in nine regions of the macula in myopes.
Cases were subdivided into low to moderate and high myopia. All were subjected to full ocular examination including UCVA, automated refraction, BCVA, intraocular pressure, anterior segment examination by slit lamp and posterior segment examination by indirect ophthalmoscopy and the ninety diopter auxillary lens. Axial length was measured by A scan ultrasound. And macular mapping was obtained by SD-OCT.
In low to moderate group, our study found a significant negative correlation between increasing axial length and macular thickness in all quadrants of the macula except for the fovea (significant positive correlation) ,the outer temporal and the inner temporal quadrants (non significant correlation).
In high group, our study found a significant negative correlation between increasing axial length and macular thickness in all quadrants of the macula except for the fovea (significant positive correlation).
It is concluded that as the axial length increased, the average thickness of the macula decreased except for the fovea (thickness increased). Increasing levels of myopia, together with elongation of the globe, are associated with defects at certain regions of the macular area in the form of thinning.
Future studies should include a larger number of cases, patients with macular pathology, newer techniques for determining the axial length and the addition of Doppler OCT.