Purpose. Determination of proportion patients with hyperopia in refractive surgery department of ophthalmic surgery clinic, analysis of degree of their hyperopia, morphometric parameters of anterior segment of the eye. Material and methods. The proportion of patients with hyperopia who were operated in the refractive surgery department of the Khabarovsk branch of the S. Fyodorov Eye Microsurgery Federal State Institution in 2019 were assess. On limited sample of these patients, a quantitative assessment of degree of hyperopia was carried out, and morphometric parameters of the anterior segment of the eyes were studied. Results. In 2019, 141 patients with hyperopia were operated (282 operations), which amounted to 11.3% of the total number of patients in the department. The majority of patients had a moderate degree of hyperopia (55.3%). In 47.5% of eyes, hyperopia was combined with astigmatism up to 4 diopters. Conclusion. Femto LASIK technology made it possible to achieve maximum uncorrected visual acuity in 52% of patients with hyperopia in the study group. Modern capabilities of refractive surgery are capable of providing high functional results in patients with varying degrees of hyperopia. Key words:refractive errors, hyperopia, refractive surgery, Femto LASIK, age groups.
Purpose. To study of quantitative and qualitative morphometric characteristics of the anterior chamber (AC) depth, lens thickness (LT), corneal-iris angle in young patients with high axial hyperopia planning refractive surgery. Material and methods. The main group – 35 patients (70 eyes) with high axial hyperopia. Inclusion criteria: absence of ophthalmic and systemic somatic pathology. The best corrected visual acuity (BCVA) is from 0.7 to 1.0. The comparison group included 35 patients (70 eyes) with primary closure of the anterior chamber angle (ACA) in combination with high hyperopia. Inclusion criteria: the presence of functional block of the ACA in at least 2 quadrants, the absence of signs of glaucomatous optic neuropathy. BCVA – from 0.6 to 0.9. All patients underwent gonioscopy of the ACA in 4 quadrants, optical coherence tomography, assessment of morphometric parameters of the anterior segment of the eyes. Results. The analysis of morphometric parameters revealed statistically significant differences in patients of the main group relative to the comparison group: in the AC depth in the central zone – 2.8 ± 0.3 vs. 2.4 ± 0.25 mm; LT – 4.0 ± 0.35 vs. 4.5 ± 0.3 mm; ACA width – 19.6 ± 4.4° vs. 13.1±5.1°; AC depth in the periphery – 1.0 ± 0.21 vs. 0.5 ± 0.37 mm, respectively. Next, we determined whether anyone from the main group had ACA values similar to the average values of this indicator of the comparison group (13.1 ± 5.1°): in 6 eyes of the main group (3 men aged 40 to 45 years) the values of the ACA turned out to be minimal, not significantly differing from the comparison group. In addition, in 7 eyes of 6 patients of the main group, the index of the AC depth in the periphery was less than 0.5 mm with normal values of the AC depth in the central zone, which was comparable with similar values in the comparison group. Conclusion. Among the examined patients with hyperopia at the age of 39 to 45 years, with axial length values from 19 to 22 mm, an increased risk of developing an acute angle-closure glaucoma occurred in 9 patients (26 %). Keywords: hyperopia; refractive surgery; acute angle-closure glaucoma
Important physiological feature of the anatomically «short» eye is the disproportionately large volume of the lens relative to the volume of the eye. A gradual and continuous increase in the volume of the lens contributes to the anterior displacement of the irido-lenticular diaphragm, causing the functional block of the anterior chamber angle. This leads to persistent disorders of the hydrodynamics of the eye, up to the development of an acute attack of angle-closure glaucoma. Purpose. To study incidence of increased risk formation of primary angle-closure glaucoma (PACG) and its acute attack in young patients with moderate and high hyperopia (Hm). Material and methods. Clinical material was presented by 58 patients (116 eyes) with indicators of axial length of the eyes less than 23 mm. The main group consisted of 33 patients (66 eyes) with moderate and high Hm. The comparison group was represented by 25 patients (50 eyes) with PACG. Results. The study made it possible to identify group of increased risk of the formation of PACG, which included 19 people (58%), from selected general population of young patients with moderate and high Hm. Conclusion. Comparative analysis of morphometric parameters of structures of the anterior segment of the anatomically «short» eyes in young patients with moderate and high Hm, on the one hand, and in patients with PACG, on the other, revealed statistically significant differences between them in the anterior chamber depth in the central zone, the thickness of the lens, the anterior chamber volume, the peripheral anterior chamber depth, of the anterior chamber angle. Key words: primary angle-closure glaucoma, acute attack of angle-closure glaucoma, hyperopia, refractive surgery.
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