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.
Aim. Comparative analysis of the effectiveness of keratotopography methods and classical Norn’s test in assessing the stability of the tear film (TF) in patients with myopia before photorefractive surgery. Methods. The study involved 26 patients. All of them were planned for keratorefractive surgery to correct myopic refraction and astigmatism. Their age averaged 32.5±14.5 years (18-47 years). The stability of pre-corneal tear film was assessed using computed keratotopography and Norn’s test - the tear film rupture time (TFRT) was determined. A standard questionnaire was also used to assess the severity of symptoms of dry eye syndrome (DES). A comparison was made of the indicators of tear film, stability obtained by the methods of keratotopography and Norn’s test, with their subsequent comparison with the data of the questionnaire. Results. In 17 patients (65.4 %), TFRT index corresponded to the age norm. In the remaining 9 people (34.6 %), indicators of tear film stability were reduced both by keratotopography (12±4 sec) and by Norn’s test (13.5± 4.5 sec), and there were also subjective signs of dry eye syndrome according to questionnaire data. The data turned out to be comparable. Conclusion. The incidence of impaired stability of the TF and subjective manifestations of DES among patients planned for keratorefractive surgery for myopia and myopic astigmatism was significant and, according to our data, made 34.6 %. To prevent complicated postoperative course of photorefractive surgery, it is necessary to assess the condition of the ocular surface immediately before refractive surgery, to identify the risk group for DES development. Key words: dry eye syndrome; tear film; keratotopography; Norn’s test; tear film rupture time.
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