The aim of the current intervention study is to determine the effectiveness of taurine containing eye drops (available under brand name VIZILOTON) to prevent the progression of grade I and II senile cataract. This study could answer: * Dose continuous use of taurine-containing eye drops could prevent further deterioration of vision in mild cases of cataract? * The acceptance/ compliance of participants to taurine-containing eye drops. * Could long-term use of taurine-containing eye drops cause adverse effect(s)? Participants will: * Take taurine-containing eye drops (VIZILOTON eye drops) 4 times a day for one year. * Visit eye clinic every 3 months for assessment and visual examination. * Keep notes for their symptoms and their adherence to treatment.
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Visual Acuity
Timeframe: 1 Year