A 35-year-old woman from Delhi presents with progressive blurred vision and glare for 6 months. On slit-lamp examination, she has a posterior subcapsular cataract (PSC) with VA 6/18 in the affected eye. She reports no systemic disease, no steroid use, and no family history of early cataracts. On dilated fundus examination, the posterior segment is normal. What is the most appropriate next step in management?