ABSTRACT
AIM: To describe the involvement in relatives of kera-toconus (KCN) patients with corneal topography map. METHODS: A total of 300 eyes of 150 siblings of 75 KCN patients referred to corneal clinic were studied and experienced complete slit-lamp, refraction examinations and topographic cornea maps provided by videophoto-keratography. ANOVA, Fisher exact and Chi-square tests were performed to compare the results.RESULTS: From 150 siblings, 56% were female and 44% were male with average age of 21 (range of 15-39) years old. KCN and suspect KCN diagnosed in 12.3% and 6.6% respectively. The central keratometry (CK) was 46.50±4.51 dioptr(D) in KCN and 45.66±1.52 (D) in suspect KCN. Inferior-superior value (I-S) was 3.51±2.50(D) in KCN and 1.56±1.22 (D) in suspect KCN. In KCN condition the oval pattern was 67.6% (n=25) and round pattern detected was 32.4% (n=12). In suspect KCN these patterns detected were 90% and 10% respectively. Refractive errors in KCN were -7.50 to +1.25D(-1.25±1.83), in suspect KCN 0.45 to -4.2D(-0.68±0.76) and in healthy group 2.75 to -7.5D(-0.6±1.12). Astigmatism was mild in 22.7%, moderate astigmatism in 18.3% in KCN and suspect KCN.CONCLUSION: Increase KCN condition in healthy siblings of KCN patients shows require of screening to early diagnose and cautious treatment of contact lens in these individuals.
ABSTRACT
·AIM:To evaluate and analyze the visual acuity after secondary anterior and posterior chamber intraocular lens (IOL) implantation in aphakic patients.The most common reasons for performing secondary implantation were dissatisfied with aphakic glasses and intolerance or reluctance to use contact lenses,·METHODS:In this prospective,non randomized compara-tive trial study was done at Ophthalmology Department of Sadoughi Hospital,Yazd,Iran from 1995 to 2005.Posterior chamber lens was inserted in 62 eyes (60.78%) and anterior chamber lens in 40 eyes (39.21%) depending upon the type of previous cataract surgery.Demographic and clinical data was analyzed from the patient's medical records during follow up.·RESULTS:102 patients [42 females (41.18%) and 60 males (58.82%)] underwent secondary lens implantation from 1995 to 2005.Their age range was between 48 and 72 years ( mean = 62.6 years),and mean follow up time was 20.2 months (range of 6 -72 months).There were minor intra operative and post operative complications.The state of visual acuity three months after procedure and final suture removal was as follows:visual acuity of 20/20 in 48 cases (47.05%),visual acuity of 20/40 or better in 51 patients (50%),and decrease in visual acuity (3 lines of snellens chart) in 3 cases (2.95%).·CONCLUSION:The short term complications were not more than that of primary cataract surgery with lens insertion and the visual acuity outcome was as good as the preoperative best correction, so secondary lens implantation appears to be safe and effective for aphakic correction.