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The aim of this study was to compare the extent of phoria, strabismus and convergence of pseudophakic vs phakic people in an elderly population. The study was part of the Tehran Geriatric Eye Study (TGES). Of 3791 invitees, 3310 participated in TGES. One thousand nine hundred and sixty-nine met the inclusion criteria for this sub study. Mean age was 66.6 ±5.4 years, 60.7% were female, 80.6% were phakic and 19.4% were pseudophakic. Mean body mass index was 28.71 ±4.68, 76.2% were diabetic and 26.9% hypertensive. Best corrected visual acuity was 0.96 ±0.07 logMAR and 0.94 ±0.07 for phakic and pseudophakic eyes. There was no significant difference for groups for prevalence of deviation, convergence or for extent of deviation angle, except for near exophoria which was significantly higher in pseudophakic than phakic patients. Near esotropia was lower in pseudophakic patients but not significantly. The authors conclude these results are of potential use in clinical ocular examinations in the geriatric population and when prescribing glasses.

Are binocular alignment and convergence amplitude different between phakic and pseudophakic older patients?
Hashemi H, Khabazkhoob M, Asharlons A, Hashemi A.
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Fiona Rowe (Prof)

Institute of Population Health, University of Liverpool, UK.

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