Standardization of meibomian gland dysfunction in an Egyptian population sample using a non-contact meibography technique

AIM:To develop normative data for meibomian gland dysfunction(MGD)parameters,using non-contact meibography technique of Sirius Costruzione Strumenti Oftalmici(CSO)machine,in an Egyptian population sample.METHODS:Observational,cross-sectional,analytic study,in which 104 Egyptian volunteers were included.Both upper lids were examined,using“Sirius CSO”machine.Each eyelid was given a degree of meibomian gland loss(MGL),which was calculated by the software of the machine.RESULTS:Mean percentage MGL in right upper lid was of 30.9%±12.6%,and that of left upper lid was 32.6%±11.8%.Thirty-four volunteers(32.7%)had first-degree MGL in their right upper lid,and 67.3%had second-degree loss.One volunteer(1%)had zero-degree MGL in left upper lid,28(26.9%)had first-degree loss,and 75(72.1%)had second-degree loss.Degree of MGL in right upper eyelid was not related to age,but degree of MGL in left upper eyelid increased with age.There was statistically significant difference between both genders for degree of MGL in right eye(P=0.036)and in left eye(P=0.027).CONCLUSION:Noncontact meibography is a useful non-invasive tool for diagnosing MGL.MGL is diagnosed in 100%of apparently normal individuals;26.9%-32.7%of which have first-degree MGL,and 67.3%-72.1%have second-degree MGL.

Risk factors and prognosis of pediatric rhegmatogenous retinal detachment in Egypt:a university hospital based study

AIM:To study and compare the predisposing factors and clinical features of pediatric,adult,and elderly rhegmatogenous retinal detachment(RRD).METHODS:This is an observational analytic crosssectional study in which patients with RRD admitted for surgery during 6mo period were divided into 3 age groups:pediatric(<18y),adult(18-60y),and elderly(>60y).Patients’demographic data,clinical features,RRD predisposing factors/features including myopia(axial length≥26.5 mm),aphakia/pseudophakia,blunt trauma,peripheral retinal degenerations,history of RRD in the fellow eye,and surgical interventions/findings were recorded and analyzed.RESULTS:Totally 142 patients(142 eyes)were studied:26(18.31%)pediatrics,86(60.56%)adults,and 30(21.13%)elderly.Elderly patients had a significantly higher intraocular pressures and cataracts compared to the other 2 groups(P=0.04).The RRD extent was larger in pediatric group(mostly 4 quadrants)compared to adults and elderly(mostly 2 quadrants),but it was not statistically insignificant(P=0.242).There were not statistically significantly differences in proliferative vitreoretinopathy(PVR)rate,posterior vitreous detachment(PVD)rate,number,site,shape,and size of breaks in three groups.All three groups had macular detachment in all eyes.Myopia and peripheral retinal degenerations were found to be more significant in adults(P=0.049,P=0.035,respectively),while blunt trauma was higher but insignificant in pediatric eyes(P=0.052).Pars plana vitrectomy(PPV)with silicone oil as a tamponade was the most used surgery in all groups.CONCLUSION:There are no significant difference in PVR rate in pediatric eyes but a significant higher rate of total RRD.Blunt trauma is more frequent in pediatrics eyes while myopia and/or peripheral retinal degenerations are more frequent in older ages.The rate of PPV as a choice for surgery is similar among all age groups.