Browsing by Author "Koc, Feray"

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    Causes of low vision and blindness in a Turkish adult population: the Izmir eye study
    (2018) Sefi-Yurdakul, Nazife; Koc, Feray; Erden, Veysi; 0000-0003-2005-9256; 29748945; AAF-4678-2020
    Background: Data from Turkey show that sense organ diseases were the second leading cause of years lost due to disability in 2015. However, there are no reliable data on either the baseline causative disorders of visual impairment or the burden of these disorders on the population in Izmir region. Izmir is the third most populated city of Turkey with a population of approximately 4.2 million. Aim: The purpose of this study was to define the baseline disorders causing low vision and blindness in accordance with World Health Organization criteria in an adult population in Izmir. Methods: We evaluated the ophthalmologic reports of 20 790 people in Izmir, Turkey. Age- and sex-specific causes of low vision and blindness were identified. Results: Bilateral low vision and blindness was detected in 347 people, 172 males and 175 females. For those aged 18-50 years, retinal dystrophies (37%), congenital eye anomalies (14%) and myopic degenerations (13%) were the most common causes. For those aged 50+years, age-related macular degeneration (21%) was the leading cause. Diabetic retinopathy (17%), corneal opacities (14%), cataract (12%) and glaucoma (9%) were also important. Sex was not a significant determinant. Conclusion: The specific causes of visual impairment vary greatly with age, however, unavoidable retinal pathologies were the predominant causes at all ages.
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    The Effects of Partial and Full Correction of Refractive Errors on Sensorial and Motor Outcomes in Children with Refractive Accommodative Esotropia
    (2019) Sefi-Yurdakul, Nazife; Kaykisiz, Huseyin; Koc, Feray; https://orcid.org/0000-0003-2005-9256; 29549487; AAF-4678-2020
    PurposeTo investigate the effects of partial and full correction of refractive errors on sensorial and motor outcomes in children with refractive accommodative esotropia (RAE).MethodsThe records of pediatric cases with full RAE were reviewed; their first and last sensorial and motor findings were evaluated in two groups, classified as partial (Group 1) and full correction (Group 2) of refractive errors.ResultsThe mean age at first admission was 5.843.62years in Group 1 (n=35) and 6.35 +/- 3.26years in Group 2 (n=46) (p=0.335). Mean change in best corrected visual acuity (BCVA) was 0.24 +/- 0.17 logarithm of the minimum angle of resolution (logMAR) in Group 1 and 0.13 +/- 0.16 logMAR in Group 2 (p=0.001). Duration of deviation, baseline refraction and amount of reduced refraction showed significant effects on change in BCVA (p<0.05). Significant correlation was determined between binocular vision (BOV), duration of deviation and uncorrected baseline amount of deviation (p<0.05). The baseline BOV rates were significantly high in fully corrected Group 2, and also were found to have increased in Group 1(p<0.05). Change in refraction was -0.09 +/- 1.08 and +0.35 +/- 0.76 diopters in Groups 1 and 2, respectively (p=0.005). Duration of deviation, baseline refraction and the amount of reduced refraction had significant effects on change in refraction (p<0.05). Change in deviation without refractive correction was -0.74 +/- 7.22 prism diopters in Group 1 and -3.24 +/- 10.41 prism diopters in Group 2 (p=0.472). Duration of follow-up and uncorrected baseline deviation showed significant effects on change in deviation (p<0.05).Conclusions p id=Par4 Although the BOV rates and BCVA were initially high in fully corrected patients, they finally improved significantly in both the fully and partially corrected patients. Full hypermetropic correction may also cause an increase in the refractive error with a possible negative effect on emmetropization. The negative effect of the duration of deviation on BOV and BCVA demonstrates the significance of early treatment in RAE cases.