Understanding Retinoscopy A Guide to Steark Retinoscope
Retinoscopy is a technique that refers to the objective measurement of the eye refractive errors.
Understanding Retinoscopy: A Guide to Steark Retinoscope
Retinoscopy is a technique that refers to the objective measurement of the eye's refractive errors. In this technique, the patient’s eye directs the beam of light. Consequently, the retina illuminates and causes reflexes in the pupil, which the ophthalmologist observes. By using different lenses, he finds the refractive number of the eye and neutralizes it. In this blog, we will understand retinoscopy with a general overview of a steark retinoscope.
Types of Retinoscopy
Retinoscopy has two basic types:
- Static Retinoscopy: It is for patients who focus on a stationary object.
- Dynamic Retinoscopy: It is for patients who focus on a moving object.
Types of Retinoscopes
Likewise, the instrument that is used to perform retinoscopy is known as a retinoscope. There are two main types of retinoscopes:
- Spot Retinoscope
- Steark Retinoscope
Steark Retinoscope
Spot retinoscope has a light source that produces a spot of light, while steark retinoscope has a light source that produces a steark of light. It can rotate in various directions and adjust in width. Our topic of concern is the steark retinoscope. Nowadays, they are the most widely used retinoscopes.
Design of a Steark Retinoscope
It has a simple design: a light source with a handle. Its components include:
- A fixation card magnet.
- Dust-free sealed optics.
- Closed linear polarization filter switch.
- External focusing sleeves
Working of Steark Retinoscope
Although it works on the same principle as a general retinoscope, it consists of two distinct operating systems:
- Projection System: It covers the major components of the retinoscope: mirror, condensing lens, and current source. It illuminates these major components and the retina.
- Observation System: This system allows the doctor to see the patient's retinal reflex.
Steark Retinoscope Set
The Steark Retinoscope consists of a complete set of four items. These items are:
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A zip case.
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Desk Charger.
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Rechargeable handle.
-
Retinoscope.
Advantages of Steark Retinoscope
It has several advantages over spot retinoscopes, and ophthalmologists mostly prefer them:
- Easy to use.
- Fast and accurate.
- It is very beneficial in determining the axis of astigmatism.
- Separate neutralization for each meridian.
- The axis of astigmatism is apparent.
- It shows a band of light, which is easy to visualize instead of a shadow.
- It operates easily with undilated pupils.
Disadvantages of Steark Retinoscope
Despite its advantages, it has some disadvantages too, such as:
- The lenses are transparent, and fingerprint marks can interfere with the interpretation of results.
- Pupils may constrict due to intense light.
- Battery time is less due to the high intensity of light.
Conclusion
In conclusion, steark retinoscopy is an effective method for the diagnosis of eye disorders. It is widely recognized and preferred for its ease of use, accuracy, and efficiency. It is available in a complete steark retinoscope set of 3 to 4 items.
Frequently Asked Questions
Who invented Steark Retinoscopy?
Jack C. Copeland.
What is the function of a Retinoscope?
The function of the retinoscope is to diagnose the eye’s refractive error.
What is the principle of Steark Retinoscope?
It works on the same principle as a general retinoscope; when light is directed into the patient’s eye, the direction of the light will depend upon the refractive state of the eye.
Please visit our website, Artema Medical, for more information.
