Is an eye pressure of 9 mmHg normal?

Jun 06, 2023 Source: Cainiu Health

Dr. Cui Xin

Introduction

An intraocular pressure (IOP) of 9 mmHg is generally considered abnormal. The specific analysis is as follows: IOP typically refers to the pressure inside the eye, which is formed by the eyeball and its internal contents. During vision function, the internal tissues are transparent and have refractive indices that together form the eye's optical system. Generally, the normal range for intraocular pressure is 10 mmHg to 21 mmHg.

　　An intraocular pressure (IOP) of 9 mmHg is generally considered abnormal. The specific analysis is as follows:

　　Intraocular pressure usually refers to the pressure inside the eye, which is maintained by the eyeball and its internal contents. During vision, the internal tissues are transparent and have refractive indices that form a refractive system. Normally, the standard range for intraocular pressure is 10–21 mmHg. The primary method of measurement is digital palpation, in which two fingers alternately press against the eye to assess the fluctuation felt during compression, thereby estimating the eye's pressure. An IOP of 9 mmHg falls below the normal range and indicates low eye pressure, which may result from trauma or local inflammation leading to insufficient aqueous humor production or abnormal drainage. In such cases, patients are advised to undergo further diagnostic evaluations, such as fundus examination, to determine the underlying cause and receive appropriate treatment.

　　It is recommended that individuals improve unhealthy visual habits in daily life, reduce熬夜 (late-night activities), and maintain a light diet. If symptoms such as eye discomfort or blurred vision occur, immediate medical attention at a hospital is necessary.

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What can be done to relieve high eye pressure?

Increased intraocular pressure is considered to be associated with improper eye use, ocular trauma, hypertension, and other factors. It can be alleviated under a doctor's guidance through appropriate rest, cold compresses, and medication. Specifically: prolonged eye use, especially extended periods of staring at screens such as computers or smartphones, can lead to eye muscle fatigue. This fatigue reduces the eye's ability to adjust focus, thereby causing elevated intraocular pressure.

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If the intraocular pressure in glaucoma has normalized, is further treatment still necessary?

After treatment, if the intraocular pressure has returned to normal and the visual field defect is stabilized, further treatment is usually not required. However, regular follow-up examinations are still recommended to monitor any changes in the condition. If, after treatment, the intraocular pressure is normal but visual field defects persist and the retinal nerve fiber layer continues to thin, the condition is considered unstable and ongoing treatment is generally necessary.