الفهرس 
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Abstract
Introduction: The pentacam is a multipurpose instrument that is
capable of external ocular photography, corneal pachymetry, corneal
topography, densitometry and anterior chamber analysis. Pentacam gives
comprehensive data about preoperative astigmatism, lens denisty and
refractive power helping in optimizing the visual outcome after cataract
surgery
The aim of this study was to evaluate the astigmatic changes before
and after cataract surgery.
Patients and Methods: A total of assessed 50 cataract patients with
preoperative corneal astigmatism between 0.5 and 2.50 diopters (D), aged 48
– 79 years, at the International Eye Hospital in Damietta between March 2017
and June 2018. All patients were adequately informed and signed a consent
form before surgery after they had received an explanation about the nature of
the study and its potential complications. The study was approved by the local
ethics committee. All the procedures were in accordance with the ethical
standards of the responsible committee on human experimentation.
Inclusion criteria were age older than 40 years and, visually
significant cataract (best corrected visual acuity worse than 0.5 immature
senile & posterior sub capsular cataract detected by slit lamp, lens
densitometry from 0 to 4 detected by pentacam), regular corneal astigmatism
between 0.5 D and 2.00 D, and pharmacologic mydriasis of to allow proper
intraoperative visualization.
The exclusion criteria were previous intraocular surgery in the eye,
pterygium, ocular disease that would lead to poor postoperative corrected
Summary and Conclusion
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visual acuity (corneal scarring, uveitis, advanced glaucoma, neuro-ophthalmic
disease, significant macular disease or other retinopathy), zonule or pupil
abnormalities and any irregular corneal astigmatism.
Preoperatively, Before surgery,all patients underwent a complete
ophthalmological examination that included the following: manifest
refraction, measurement of LogMAR uncorrected (UDVA),