Scientific Online Resource System

Scripta Scientifica Medica

Demographic Changes and Visual Disability and Eastern Bulgaria

Binna Nencheva


Introduction: Age and gender are among the risk factors influencing the disability.

Purpose: To study the connection between the demographic changes in Eastern Bulgaria and frequency of disability.

Material and methods: The blindness and low vision were evaluated retrospectively and calculated per population of 100 000. All information was obtained from the National Statistical Institute and the Specialized Visual Labor Expert Medical Commission - Varna registry for the period 2005-2012, filled in a specifically designed data collection form, and subsequently processed with SPSS 20.

Results and discussion: The data from the NSI shows an increase of the population above 60 years of age from 2009. The individuals up to 19 years of age are 4.90 %, and those of 20 years of age and above are 95.19 %. The primary disability (PD) starts to increase after the age of 60 and decreases to a small extent within the age group above 80 years. The majority of the patients are city residents. Regarding the gender indicator it has been demonstrated that contrary to monocular blindness where the male PD prevails, for binocular blindness above the age of 80 the PD women are more affected.

Conclusions: PD for individuals with visual conditions increases in correlation with general tendency of the population ageing.


disability; Eastern Bulgaria; demographic changes

Full Text


Ministry of Labor and Social Policy. Actualization of the national strategy on the demographic development of the population of the Republic of Bulgaria (2012-2030). Sofia.

Anhchuong Le, Bickol NM, Catherine AM, Hugh R. Risk factors associated with the incidence of open-angle glaucoma: The Visual Impairment Project. Ivest Ophthalmol & Vis Science 2003;44(9):3783-9.

Bengtsson B. Incidence of manifest glaucoma. Br J Ophthalmol 1989;73:483-487.

Blum R, Kloos C, Muller N, Mandecka A, Berner R, Bertram B, Muller U. A Prevalence of diabetic retinopathy. Check-up program of a public health insurance company in Germany, 2002-2004. Ophthalmology. 2007;104:499-500.

Bressler SB, Munoz B, Solomon SD, West SK. Racial differences in the prevalence of age-related macular degeneration; the Salisbury Eye Evaluation (SEE) Project. Arch Ophthalmol 2008 Feb;126(2):241-5.

Dielemans I, Vingerling JR, Wolf RCW, et al. The prevalence of primary open angle glaucoma in a population - based study in the Netherlands: The Rotterdam Study. Ophthalmology. 1994;101:1851-1855.

Klein R, Klein BE, Knudtson MD, Meuer SM, Swift M, Gangnon, RE. Fifteen-year cumulative incidence macular degeneration: the Beaver Dam Eye Study. Ophthalmology 2007 Feb;114(2): 253-62.

Klein BE, Klein BE, Linton KL. Prevalence of age-related lens opacities in a population. The Beaver Dam Eye Study. Ophthalmology. 1992;99:546-52.

Leske MC, Connell AM, Wu Sy, et al. Incidence of open -angle glaucoma: the Barbados Eye Studies. The Barbados Eye Studies Group. Arch Ophthalmol. 2001;119:89-95.

Leske MC, Connell AM, Wu Sy, et al. Risk factors for open-angle glaucoma: The Barbados Eye Study Arch Ophthalmol 1995;113:918-924.

Mitchell P, Smith W, Atteb K, Heale PR. Prevalence of open-angle glaucoma in Australia: the Blue Mountains Eye study. Ophthalmology. 1996;103:1661-1669.

National Eye Institute. Vision loss from eye diseases will increase as Americans age. April 12, 2004. Arch Ophthalmol. 2001; 119:89-95.

Vassileva P, Giesser SC, Vitale S, Cholakova T, Katz J, West S. Blindness and visual impairment in Western Bulgaria. Ophthalmic Epidemiol. 1996 Dec;3(3):143-9.

Waked N, Saad A, Mehanna C, Sleilary G, Kortbaoui R. Prevalence causes and risk factors for blindness and visual impairment among nursing home residents in Lebanon. J Fr Ophthalmol. 2007;30:497-502.

Weih LM, Mukesh N, McCarty CA, Taylor HR. Prevalence and predictors of open-angle glaucoma: results from the Visual Impairment Project. Ophthalmology. 2001;108:1966-1972.

Article Tools
Email this article (Login required)
About The Author

Binna Nencheva
Medical University of Varna

Departmen of Ophtalmology and Visual Sciences

Font Size