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Astigmatism in candidates of Cataract surgery and its relationship with corneal optical power,axial length,sex and patient age
Preoperative astigmatism Axial length Corneal optical power
2009/12/25
This study was conducted to define the prevalence and types of corneal astigmatism in relation with corneal optical power, axial length, sex and patient age. 641 cataract patients were included in a d...
Prevalence of Visual Impairment in Low Birth Weight and Normal Birth Weight School Age Children
Visual impairment Low birth weight Refraction errors School age children
2009/11/24
Objective:Studies demonstrated that 5-10% of preschool children have visual impairment. By age seven, up to 13% of children will have some defect in visual acuity. Both prematurity and low birth weigh...