AimTo determine relation between near work and myopia progression in student population. Causes of myopia occurrence are not sufficiently explained.MethodsThis retrospective-prospective, descriptive research included 100 students with verified myopia up to -3 Dsph. Ophthalmological examination and measurement diopter-hours variable (Dh) were done twice, in the period from January 2011 until January 2012.ResultsA multivariate regression analysis of impact on the difference of distance visual acuity without correction to the right and left eye and difference of automatic computer refractometry in cycloplegia of both eyes indicates that, diopter-hours variable (Dh) had statistically significant impact on increase of distance visual acuity difference (right eye OR: I measurement–Dh 1.489, II measurement–Dh 1.544, p<0.05; left eye OR: I measurement–Dh 1.602, II measurement–Dh 1.538, p<0.05) and automatic computer refractometry in cycloplegia (right eye OR: I measurement 1.361, II measurement 1.493, p<0.05; left eye OR: I measurement 0.931, II measurement 1.019, p<0.05) during both measurements.ConclusionNear work cause the increase of myopia. This research opened a perspective for other researches on the impact of near work on myopia.
The aim of our research was to explore possible correlation between eye aperture diameter and occurrence of complications in the posterior eye segment after Nd-YAG capsulotomy. In the study, we analyzed 120 eyes of the patients who experienced opacities in the posterior capsule or developed secondary cataract after the surgery. All patients underwent Nd-YAG laser posterior capsulotomy. Thereafter, we monitored complications occurrence in the posterior eye segment in intervals of one hour, seven days, one month and six months following the surgery. The frequency of complications increased with time. Six months after Nd-YAG laser posterior capsulotomy we found changes in the posterior eye segment: hole in the anterior hyaloid membrane in case of 9 (7,50%) eyes, prolapse of the corpus vitrei in 2 (1,66%) cases, retinal hole in case of 5 (4,16%) eyes, macular hole in 3 (2,50%) eyes, retinal detachment in 3 (2,50%) eyes, cystoid macular edema in 2 (1,66%) eyes, (1,66%), and macular pack in case of 11 (9,16%) eyes. Aperture size in the posterior capsule directly correlates with the number of complications. We suggest that the aperture diameter should not exceed 4,0 mm.
Aim:Main the goal of the research is to analyze the occurrence of glaucoma in patients with diabetes mellitus type 1 (DM type 1) and diabetes mellitus type 2 (DM type 2).Patients and methods:The study involved 140 patients, 34 with DM type 1 and 106 with DM type2. In relation to the type of glaucoma to the patients are divided into two groups: Primary and Secondary glaucoma. According to the stage of diabetic retinopathy (DR) patients were analyzed in three groups: non-proliferative, preproliferative and proliferative DR. Since ophthalmological parameters were analyzed: best corrected visual acuity (BCVA), intraocular pressure (IOP), visual field (VF) of computerized perimetry, excavatio optic nerve (E/D) by optic coherent tomography (OCT).Results:Applying the test of quotient chance found that subjects with DM type 1 have a 5.94 times greater chance of developing secondary glaucoma, but is of primary (P <0.0001). In patients with DM type 2, where the chance of getting the subjects of secondary glaucoma 4.43 times larger than that of the primary (P = 0.0002).Conclusion:Patients with DM type have great chance of developing secondary glaucoma of the primary. Primary glaucoma more common in NPDR but secondary glaucoma more common in PDR.
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