This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
Most common cause of frequent change in presbyopic glasses among the following are: 
Select and explain. 
A. Diabetic Retinopathy, B. Senile cataract, C. Age related macular degeneration, D. Glaucoma
D: Glaucoma
Answer: D: Glaucoma 
Explanation: Glaucoma can cause frequent change of presbyopic glasses. Symptoms of primary open angle glaucoma Asymptomatic most commonly. Headache Frequent change of glasses Delayed dark adaptation Loss of field of vision in advanced cases