Macular dysfunctions after reattachment

Twelve cases operated for retinal detachment affecting the macular area were collected and examined for macular dysfunctions. Follow up for 1-1 1/2 year done. Five cases had micropsia, four of them showed macular oedema by fundus examination and biomicroscopy. Three cases had macropisa although no macular pathological changes were detected by ophthalmoscopy and biomicroscopy. Micropsia and macropsia were detected by an apparatus called [micropsia meter]. Eight cases out to twelve had slight degree of metamorphopsia detected by Amseler's chart. Cases of micropsia showed marked improvement during the follow up period, cases of macropsia showed increase by time during follow up, while cases of metamorphopsia remained stationary all through

Surgically induced corneal astigmatism after cataract extraction

The amount of corneal astigmatism after cataract extraction is measured in 100 cases using the keratometer and the autorefractometer. Comparative study was done between limbal sections closed by 8-0 virgin silk suture and corneal sections closed by 10-0 monofilament sutures. The effect of sutures removed after 16 weeks was also studied. Follow-up for 6 months was done for the surgically induced corneal astigmatism after cataract extraction surgery

Ergonomics of vision legibility of road signs in reduction of traffic accidents

Road signs and traffic control devices in the Cairo Governorate area were with particular attention to design, placement, uniformity and maintaince. Several recommendations were concluded and delivered to the central Department of Traffic Police. We requested the removal of all traffic signs not complying to standards, re-placement of signs and adhesion to standards for conventional road guide signs