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  2. Ocular tonometry - Wikipedia

    en.wikipedia.org/wiki/Ocular_tonometry

    It is an important test in the evaluation of patients at risk from glaucoma. [1] Most tonometers are calibrated to measure pressure in millimeters of mercury , with the normal eye pressure range between 10 and 21 mmHg (13–28 hPa).

  3. Intraocular pressure - Wikipedia

    en.wikipedia.org/wiki/Intraocular_pressure

    The diurnal variation for normal eyes is between 3 and 6 mmHg and the variation may increase in glaucomatous eyes. During the night, intraocular pressure may not decrease [17] despite the slower production of aqueous humour. [18] Glaucoma patients' 24-hour IOP profiles may differ from those of healthy individuals. [19]

  4. Glaucoma in dogs: What you need to know - AOL

    www.aol.com/glaucoma-dogs-know-100000706.html

    Glaucoma in dogs is a painful condition caused by high pressure within the eye. Two types of glaucoma can affect our canine companions: primary and secondary. Glaucoma can lead to blindness if it ...

  5. Canine glaucoma - Wikipedia

    en.wikipedia.org/wiki/Canine_glaucoma

    Tonometry measures the intraocular pressure with an instrument. Normal intraocular pressure in dogs can ranges from 12 to 25 mmHg (1.6 to 3.3 kPa), and both eyes should be similar in pressure. Gonioscopy is a diagnostic procedure to examine the angle of the anterior chamber.

  6. Glaucoma - Wikipedia

    en.wikipedia.org/wiki/Glaucoma

    A major risk factor for glaucoma is increased pressure within the eye, known as intraocular pressure (IOP). [1] It is associated with old age, a family history of glaucoma, and certain medical conditions or the use of some medications. [6] The word glaucoma comes from the Ancient Greek word γλαυκός (glaukós), meaning 'gleaming, blue ...

  7. Ocular hypertension - Wikipedia

    en.wikipedia.org/wiki/Ocular_hypertension

    For most individuals, the normal range of intraocular pressure is between 10 mmHg and 21 mmHg. [3] It is estimated that approximately 2-3% of people aged 52-89 years old have ocular hypertension of 25 mmHg and higher, and 3.5% of people 49 years and older have ocular hypertension of 21 mmHg and higher.

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  9. Intraocular lens power calculation - Wikipedia

    en.wikipedia.org/wiki/Intraocular_lens_power...

    Through normal eyes an average velocity of 1555 m/s is accepted for calculation. Modern instruments use separate sound velocities for the different eye components to obtain the total axial length. The measured transit time is converted to a distance using the formula d=t/v Where d is the distance, t is the time and v is the velocity. [1]