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Abstract(s)
Introdução: A Diabetes Mellitus é uma doença crónica, que nos últimos anos tem tido um crescimento acentuado e que constitui uma das principais causas de cegueira em todo o mundo. Associado a esta patologia, ocorrem alterações nos principais órgãos do corpo humano, nomeadamente, os olhos. Deste modo, torna-se necessário e útil, o estudo das alterações da qualidade visual, entre elas a qualidade da imagem retiniana, uma vez que os pacientes diabéticos estão sujeitos a alterações precoces quando comparados com pacientes sem esta patologia.
Objetivo: Avaliar a influência da Diabetes na qualidade de imagem retiniana através de medições de espalhamento intraocular e aberrometria.
Métodos: Estudo caso-controlo em que a população em estudo é portadora de Diabetes, tendo sido constituída por 50 pacientes e a população controlo por 30 pacientes. Ambos os grupos realizaram medições de espalhamento intraocular através do C-Quant (Cataract Quantifier) da Oculus e medições de aberrometria pelo Aberrómetro Topógrafo Corneano OPD Scan III da Nidek. Posteriormente, realizaram a medição da acuidade visual em alto e baixo contraste e responderam a um questionário de encandeamento.
Resultados: A dimensão das amostras analisadas para ambos os grupos foi de 50 pacientes com diabetes (59±7 anos) e 30 pacientes sem a patologia (55±10 anos). Quando comparados ambos os grupos, para parâmetros como o espalhamento, embora sem significância estatística nesta variável, os valores foram superiores em pacientes com diabetes. No caso das aberrações, verificou-se significância estatística para o Trifólio Vertical, a Aberração Esférica e o HORMS, observando-se também na análise das aberrações que o grupo com diabetes volta a apresentar valores superiores ao grupo de controlo para estes parâmetros. Aquando da realização de testes de correlação entre os parâmetros anteriormente mencionados, nomeadamente, o espalhamento e as várias aberrações analisadas no estudo, não se verificou a existência de correlações entre estes, à exceção do valor de espalhamento que apresenta correlação positiva moderada com ambas as acuidades visuais e com a idade.
Conclusões: O objetivo principal do estudo ficou cumprido, uma vez que se mostrou que pacientes com diabetes apresentam maiores valores de espalhamento intraocular e de aberrações oculares, quando comparados com indivíduos sem esta patologia. A associação entre algumas aberrações e os valores de espalhamento não ficou provada neste estudo.
Introduction: Diabetes Mellitus is a chronic disease, which in recent years has grown sharply and is one of the leading causes of blindness worldwide. Associated with this pathology, changes occur in the main organs of the human body, namely, the eyes. Thus, it is necessary and useful to study changes in visual quality, including retinal image quality, since diabetic patients are subject to early changes when compared to patients without this pathology. Objective: To evaluate the influence of Diabetes on the quality of the retinal image through measurements of intraocular scattering and aberrometry. Methods: A case-control study in which the study population are carrier of Diabetes, comprising 50 patients and the control population with 30 patients. Both groups performed intraocular scattering measurements using the Oculus C-Quant (Cataract Quantifier) and measurements of aberrometer by the Nidek OPD Scan III Corneal Surveyor Aberrometer. Subsequently, they performed the measurement of visual acuity in high and low contrast and answered a straylight questionnaire. Results: The size of the analysed samples for both groups was 50 patients with diabetes (59 ± 7 years) and 30 patients without the disease (55 ± 10 years). When comparing both groups, for parameters such as scattering, although not statistically significant in this variable, values were higher in patients with diabetes. In the case of the aberrations, it was verified statistical significance for Vertical Trefoil, Spherical Aberration and HORMS, also observing in the analysis of the aberrations that the group with diabetes presents higher values than the control group for these parameters. When performing correlation tests between the aforementioned parameters, namely, the scattering and the various aberrations analysed in the study, there was no correlation between them, except for the scattering value that shows a moderate positive correlation with both visual acuities and with age. Conclusions: The main objective of the study was fulfilled, since it was shown that patients with diabetes have higher values of intraocular scattering and ocular aberrations when compared with individuals without this pathology. The association between some aberrations and scattering values was not proved in this study.
Introduction: Diabetes Mellitus is a chronic disease, which in recent years has grown sharply and is one of the leading causes of blindness worldwide. Associated with this pathology, changes occur in the main organs of the human body, namely, the eyes. Thus, it is necessary and useful to study changes in visual quality, including retinal image quality, since diabetic patients are subject to early changes when compared to patients without this pathology. Objective: To evaluate the influence of Diabetes on the quality of the retinal image through measurements of intraocular scattering and aberrometry. Methods: A case-control study in which the study population are carrier of Diabetes, comprising 50 patients and the control population with 30 patients. Both groups performed intraocular scattering measurements using the Oculus C-Quant (Cataract Quantifier) and measurements of aberrometer by the Nidek OPD Scan III Corneal Surveyor Aberrometer. Subsequently, they performed the measurement of visual acuity in high and low contrast and answered a straylight questionnaire. Results: The size of the analysed samples for both groups was 50 patients with diabetes (59 ± 7 years) and 30 patients without the disease (55 ± 10 years). When comparing both groups, for parameters such as scattering, although not statistically significant in this variable, values were higher in patients with diabetes. In the case of the aberrations, it was verified statistical significance for Vertical Trefoil, Spherical Aberration and HORMS, also observing in the analysis of the aberrations that the group with diabetes presents higher values than the control group for these parameters. When performing correlation tests between the aforementioned parameters, namely, the scattering and the various aberrations analysed in the study, there was no correlation between them, except for the scattering value that shows a moderate positive correlation with both visual acuities and with age. Conclusions: The main objective of the study was fulfilled, since it was shown that patients with diabetes have higher values of intraocular scattering and ocular aberrations when compared with individuals without this pathology. The association between some aberrations and scattering values was not proved in this study.
Description
Keywords
Aberrações Oculares Diabetes Mellitus Espalhamento Intraocular Qualidade Visual