Mahaperiyava has prescribed parayanam of Surya Shatakam (100 slokas) composed by Mayura maha kavi to improve declining eye sight (very special if this parayanam is done on Aavani/Simha maasa Sundays). In addition to improving eye sight, it is said chanting this Surya Shatakam improves general health and cures various diseases.
Bala periyava has indicated to this devotee (through a maami) that chanting aditya hrudayam stotram and subramanya bhujangam will help improve eye sight or at least will prevent deterioration of vision.
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