Tolerance level to amount of astigmatic prescription

Beenish Latif, Warda Shahzadi


It is a routine observation that some follow up cases of refraction, in eye OPD complains of headache and eye pain. These complain are usually associated with high astigmatic prescription mostly with overcorrection and rarely with under correction. AIMS: The purpose of study was to find out tolerance level to amount of astigmatic prescription and to evaluate the influence of tolerance to amount of astigmatism on vision. METHODOLOGY: An informed consent was obtained describing the detail of the study and implication thereof the subjects was assured of their confidentiality of information and outcome. A detail socio demographic picture of the subjects was obtained. All information will be collected by performa attached at the end. Non cycloplegic factors were carried out of all subjects difference between objective and subjective refraction was recorded. RESULTS: Majority of the patients had astigmatism between 0.25 to 1.00DC and they accepted cylinder less than 0.50DC. These patients were feeling comfortable with this prescription. The patient having astigmatism more than 3.00DC were feeling uncomfortable and they took time to accept the prescription so results were highly significant. CONCLUSION: Clinician should not prescribe the high cylindrical power more than patient acceptance full prescription should not give at first visit. Key words:  Astigmatism, ATR, WTR, Cylindrical.

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