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Reflect on the magnification effects produced by spectacles. Discuss the effects to the wearer & advice to patient during collection

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Introduction

Reflect on the magnification effects produced by spectacles. Discuss the effects to the wearer & advice to patient during collection Visual defects are mostly caused by genetic factors or age-related disease. When mentioning the magnification effects produced by spectacles, it can be mentioned the causes of which a subject will need to have spectacles. Ignoring astigmatism there are three focusing states of the eye: emmetropia, hypermetropia and myopia. Also, presbyopia is a state of the eye that occurs when the eye is loosing the ability to focus on close up objects and it occurs on people after the age of 40 years due to the gradual and progressive age - related loss of accommodation. When the rays of light from an object are falling directly on the centre of the macula, the subject eye is emmetropic, which means that the subject has good vision. When the rays of light from an object are falling in front of the macula, the subject's eye is called myopic. And finally, when the rays of light from an object are focused behind the retina, the subject's eye is hypermetropic. ...read more.

Middle

As mentioned within the text, the minus powers have the ability to make the object appear smaller, and the plus lenses have the opposite effect, they make the object appear bigger. In the unaccomodated eye of the subject the object and the writing appears to be "normal" to them. The issue may occur when a subject never worn correction glasses before and they will have the difficulty on adjusting with the lenses, hence they will seem the objects are too big or too small and the writing is too sharp for their eyes. An essential role at the collection is to reassure the subject and give the right advice regarding the lenses they need to wear. Therefore, it may be mentioned to the subject that it needs a period of time for the eye to accommodate to the new prescription. Also, the adjustment of the frames is essential in making sure that the subject's eye will see thru the optical centre of the lens, which gives the best focus on the lenses. As mentioned above, plus lenses make objects look bigger. This leads to some phenomena as the brain s trying to compensate. ...read more.

Conclusion

As a dispensing optician I have the pleasure of working and dispensing both plus and minus powers and the initial problem that I was faced to was the reassurance that I had to give to the patients when speaking to them about their prescription. On collection, I had encountered patients that were very concerned about that effect on the glasses on the long time wearer. The advice that I gave to them was that he glasses are going to improve their vision and they will help the eyes not to deteriorate. I explained that their vision is improving by wearing glasses and even if they will feel in the first two or three days that their glasses are making them feel a bit strange (e.g. dizzy feeling), they should continue wearing the glasses for at least one week until their eyes adjust to the correct prescription. Also I believe it is important for a dispensing optician to be able to advise the customer by giving them written instruction in how to take care of the lenses and the frames As a glasses wearer myself, even though I need to wear glasses for concentration only I felt reassured myself when a professional spoke to me in a manner that I understood the importance of wearing glasses and also I understood my prescription. ...read more.

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