The Effect of Age on the Indicator of Individual Norm of Intraocular Pressure

Юсеф, Н. Ю.; Казарян, Э. Э.; Рафаэлян, А. А.; Сафонова, Д. М.; Школяренко, Н. Ю.; Матющенко, А. Г.

doi:10.18008/1816-5095-2019-3-355-359

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…В 2005 году в ФГБНУ «НИИ глазных болезней» был разработан уникальный скрининговый метод определения индивидуальной нормы ВГД [30][31][32][33], который уже доказал свою эффективность при ранней диагностике глаукомы, а также при лечении и мониторинге заболевания, но в литературе нет исследований о прогностическом значении показателя индивидуальной нормы в хирургии катаракты [26,27,34].…”

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Changes in Intraocular Pressure after Cataract Surgery, Depending on the Indicator of the Individual Norm

Yusef¹,

Rafaelyan²

2021

Oftalʹmologiâ

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Literature data confirm the existence of different opinions about the nature of changes in intraocular pressure after cataract extraction. However, assessment of the risk factors significance for complications and prediction their occurrence in the postoperative period are still unresolved issues. Average statistical norm can still entail a persistent increase in IOP after cataract surgery.Purpose: to study the frequency of persistent increase in IOP after cataract surgery with a statistically normal level of IOP depending on the ratio of the preoperative level of IOP with its individual norm.Methods: The clinical study was based on the analysis of 69 phacoemulsifications and posterior chamber intraocular lens implantations with a preoperative IOP level within the average statistical norm (IOP <22 mm Hg). The determination of individual norm of IOP was carried out using flowmetry according to the original method developed at the Research Institution of Eye Diseases. All patients were divided into 3 group. Group 1 — 25 patients with IOP less than individual norm of IOP. Group 2 — 18 patients (21 eyes) with medically compensated IOP (less than individual norm of IOP ). Group 3 — 20 patients (22 eyes) with IOP more than individual norm of IOP.Results. GROUP 1. The initial IOP value before surgery in group 1 averaged 15.7 ± 3.6, after a year a decrease in IOP was recorded in 15 eyes (57.7 %). In 11 eyes (42.3 %) IOP remained unchanged. However, IOP changes in this group were statistically insignificant (p > 0.5). GROUP 2. After a year decrease in IOP was recorded in 11 eyes (52.4 %). In 10 eyes (47.6 %) IOP remained unchanged. GROUP 3 The initial IOP level before surgery was on average 17.9 ± 1.4. One year later, a decrease in IOP was recorded in 6 eyes (40.9 %). In 8 eyes (22.7 %) IOP remained unchanged.Conclusions. When planning cataract surgery the indicator of real compensation is the level of ophthalmotonus, which does not exceed the individual norm. IOP exceeding the individual norm indicates a high probability of a persistent increase in IOP after cataract surgery.

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Changes in Intraocular Pressure after Cataract Surgery, Depending on the Indicator of the Individual Norm

Yusef¹,

Rafaelyan²

2021

Oftalʹmologiâ

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Primary Angle-Closure Glaucoma Due to Cyst of the Ciliary Body. Clinical Case

Анджелова¹,

Казарян²,

Школяренко³

2020

Oftalʹmologiâ

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There is a clinical case of the occurrence of angle-closure glaucoma due to closure of the angle of front camera with the cyst of a ciliary body. Patient A., 42 years old, complained about a feeling of transient blurring of the right eye vision, visual impairment in the evening. At the initial ophthalmological examination, the maximum corrected visual acuity in both eyes was 1.0, intraocular pressure according to pneumotonometry: OD — 21 mm Hg, OS — 14.8 mm Hg. There were no changes in the anterior segment of the eyeball according to biomicroscopic data. Taking into account the asymmetry of IOP data, the patient underwent the following studies: static perimetry, optical coherence tomography (OCT), flowmetry with the calculation of tolerant intraocular pressure (TIOP). According to OCT and static perimetry, pathological deviations were not detected. When performing flowmetry on the left eye, the indicators were within normal values, however, a significant decrease in the volume of eye ocular blood flow and an increase in the IOP were determined in the right eye. In the left eye, the TIOP corresponded to the IOP, and in the right eye, the IOP indicators exceeded the TIOP value. The lack of correlation between morphofunctional indicators and flowmetry data, an unburdened hereditary history of glaucoma, and a discrepancy between flowmetry and age could indicate the development of the angle-closed glaucoma, so the patient was referred to ultrasound biomicroscopy. The echographic picture of the anterior part of the right eye was characterized by a decrease in the depth of the anterior chamber, a partial displacement of the peripheral part of the iris anteriorly, a slight narrowing of the angle of the anterior chamber, and an uneven posterior chamber. In the region of the process part of the ciliary body along the meridian of 3 hours, a thinwalled volumetric formation, anechogenic, with clear contours and dimensions was revealed: height 4.3 mm, length 4.8 mm. The root of the iris was determined by the average attachment to the ciliary body. In accordance with this, the diagnosis was made: OD — cyst of the ciliary body, the patient was referred for consultation about a possible laser surgical intervention.

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New possibilities in determining the individual norm of intraocular pressure

Yusef,

Kazaryan,

Rafaelyan

2023

Glaucoma

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This article presents the preliminary results of a clinical trial of the Individual Intraocular Pressure (IOP) Norm Analyzer. The screening method for determination of individual norm of IOP proved the efficiency for early glaucoma diagnosis, as well as in the treatment and monitoring of the disease. Patients with IOP elevated for up to 15% relative to tolerant IOP were put into the group with low risk of disease development, with IOP elevation of 15 to 25% — the group with average risk, by more than 25% — the group with high risk of developing glaucoma. The Individual IOP Norm Analyzer is an effective device for dynamic monitoring, which in combination with other examination methods increases the capabilities of early diagnosis, monitoring of glaucoma with regard to individual parameters.

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The Effect of Age on the Indicator of Individual Norm of Intraocular Pressure

Cited by 3 publications

References 25 publications

Changes in Intraocular Pressure after Cataract Surgery, Depending on the Indicator of the Individual Norm

Changes in Intraocular Pressure after Cataract Surgery, Depending on the Indicator of the Individual Norm

Primary Angle-Closure Glaucoma Due to Cyst of the Ciliary Body. Clinical Case

New possibilities in determining the individual norm of intraocular pressure

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