Prescription Addition

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This study examines the various aspects of prescription addition and associated dispensing difficulties. Prescription addition is studied with respect to eye disorders like Presbyopia, Cataract, Juvenile stress myopia etc. The various causes of prescription addition due to these disorders are analysed.


This paper shall examine the various reasons for prescription addition of the eye of an individual. We will examine various common ailments and the reasons due to which these ailments cause a prescription addition. The areas which will be studied in this section are Presbyopia, Anisometropia, squints, the various debilitating effects of diabetes mellitus and juvenile stress myopia. These issues will be studied with respect to their relevance in prescription addition. The other major issue which will be studied is the difficulties in dispensing eye prescriptions. This issue is an often neglected issue, but it has a big effect on the patient as it is the patient who is eventually denied suitable eye care. The dispensing issues which will be examined are aphakic prescriptions, iseikonic lenses, pediatric dispensing, low vision aids and protective spectacles. These dispensing issues will be examined from the patient's viewpoint.
As mentioned earlier there are numerous causes due to which prescription addition occurs. The most common is Presbyopia, which is caused due to increased age. The main cause of presbyopia is the reduced suppleness of the lens in the human eye. This suppleness is required to focus the objects near the eye. The Ciliary muscle which helps the eye to focus becomes less efficient. ...
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