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Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.
Contact lenses. to correct refractive errors of the eye; a little invasive. Phoropter. used in refraction testing. Tonometers. used to determine the intraoccular pressure (IOP) - useful in glaucoma; video link for various types of tonometers. Speculum: to keep the eyes open during any operation. Universal eye speculum.
Glaucoma medication is divided into groups based on chemical structure and pharmacologic action. The goal of currently available glaucoma therapy is to preserve visual function by lowering intraocular pressure (IOP), below a level that is likely to produce further damage to the nerve. The more advanced the glaucomatous process on initial ...
Static retinoscopy is performed when the patient has relaxed accommodative status. This can be obtained by the patient viewing a distance target or by the use of cycloplegic drugs (where, for example, a child's lack of reliable fixation of the target can lead to fluctuations in accommodation and thus the results obtained). Dynamic retinoscopy ...
Latanoprost, sold under the brand name Xalatan among others, is a medication used to treat increased pressure inside the eye (intraocular pressure). [5] This includes ocular hypertension and open-angle glaucoma. [5] Latanaprost is applied as eye drops to the eyes. [5] Onset of effects is usually within four hours, and they last for up to a day.
Bimatoprost, sold under the brand name Lumigan among others, is a medication used to treat high pressure inside the eye including glaucoma. [5] Specifically it is used for open angle glaucoma when other agents are not sufficient. [5] [6] It may also be used to increase the size of the eyelashes. [3] [4] It is used as an eye drop and effects ...
Here, lenses are switched in and out of a phoropter and the patient is asked "which looks better" while looking at a chart. This feedback refines the prescription to one which provides the patient with the best vision.
But having uncontrolled diabetes — independent of medication — is also linked to eye disease, including diabetic retinopathy and glaucoma, a disease that damages the optic nerve.
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