retinoscopy

Static retinoscopy is performed when the patient has relaxed accommodative status.

Dynamic retinoscopy is performed when the patient has active accommodation from viewing a near target.

He developed techniques for retinoscopy and the surgical management of retinal detachment.

The examinee must demonstrate the ability to complete seven tasks commonly performed on the job, such as retinoscopy, that are simulated on a computer.

It is typically determined using a phoropter asking the patient which lens is best, computer automated refractor, and through the technique of retinoscopy.

An automated refractor is an instrument that is sometimes used in place of retinoscopy to objectively estimate a person's refractive error.

Children or others who cannot respond to a normal refraction test can have their refraction measured by a test that uses reflected light (retinoscopy).

Static retinoscopy is a type of retinoscopy used in determining a patient's refractive error.

Retinoscopy through the child's undilated pupil is helpful for assessing the potential visual significance of an axial lens opacity in a pre-verbal child.

Frequently patients will have reduced stereopsis, large accommodative lag on dynamic retinoscopy, and a reduced visual field (tubular or spiral field).

Tests of such subjects have found that the temporary improvement in visual acuity is real, but per retinoscopy is not due to any change in refractive error.

These advise annual clinical review, to include measurement of weight and glycaemic control, urinary albumin value, blood pressure, foot examination, examination of visual acuity, and retinoscopy through dilated pupils.

An autorefractor or retinoscopy may provide an objective estimate of the eye's refractive error and the use of Jackson cross cylinders in a phoropter may be used to subjectively refine those measurements.

A further indication can be provided by retinoscopy, in which a light beam is focused on the patient's retina and the reflection, or reflex, observed as the examiner tilts the light source back and forth.

In combination with a retinoscope (a procedure entitled retinoscopy), the doctor instructs the patient to view an eye chart while he or she changes the lenses within the phoropter to objectively estimate the amount of refractive error the patient may possess.

Hence, a power corresponding to the working distance is subtracted from the gross retinoscopy value to give the patient's refractive condition, the working distance lens being one which has a focal length of the examiner's distance from the patient (e.g. +2.00 dioptre lens for a 50 cm working distance).

Preliminary laboratory investigations using retinoscopy of 240 dogs means the presence of different breeds had myopic problems with varying values of refraction errors depending on the breed; indications in the case of breeds of German Shepherd, Rottweiler and Miniature, the refraction errors were are indicative of myopia.