Monday, April 29, 2019
Prescription Addition Essay Example | Topics and Well Written Essays - 1750 words
Prescription Addition - Essay idealThis paper shall examine the various reasons for prescription(prenominal) addition of the center field of an individual. We will examine various parking lot ailments and the reasons due to which these ailments cause a prescription addition. The atomic number 18as 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, petty(a) vision aids and protective spectacles. These dispensing issues will be examined fro m the patients viewpoint.As mentioned earlier there are numerous causes due to which prescription addition supervenes. The most common is Presbyopia, which is caused due to increased age. The main cause of prevision is the reduced suppleness of the lens in the human eye. This suppleness is required to focus the objects near the eye. The cilial muscle which helps the eye to focus becomes less efficient. The lens loose their expertness to alter their focusing power, the envelop which contains the lens in the eye loses its suppleness. The combination of these two factors results in a decrease in the ability to accommodate (reduced accommodation) (Woodruff 2001).This results in progressive prescription addition with the passage of time.AnisometropiaAnisometropia is caused due to the differences in the dioptric values mingled with both eyeball of a single person. This is generally caused any due to refractive surgery make a difference in the ability of both eyes. Other reasons ar e overcorrections of myopic and hyperopic patients. Lastly, Anisometropia is too caused, if one eye is significantly more astigmatic than the other. Irregular astigmatism can cause an unstableness in the refractive power of both the eyes (Woodruff 2001). Prescription addition due to Anisometropia are caused originally because of either surgery causing a difference in the refractive power between either eyes or the overcorrections of myopic and hyperopic patients.SquintA squint refers to a state where the eyes are not aligned in the same direction Squints are caused by many reasons and occur more in children. As we are focusing on prescription additions, squints especially those that arise from hyperopia (long sightedness) are treated with the relevant prescription addition. Then the child will be assessed for the decrease of the form squint and the childs prescription will be changed accordingly. There are various reasons for the occurrence of squints and consequent prescriptio n addition (for the correction of the squint) amongst children. Illnesses like viral fever, measles, and meningitis are known to cause squints. Injury to the nerves given to the eye muscles can also cause squint.