1. Which one of the following is, worldwide, the most common cause of blindness? a) Cataract b)…

1. Which one of the following is, worldwide, the most common cause of blindness? a) Cataract b) Glaucoma c) Vitamin A deficiency d) Tracoma e) Onchocerciasis 2. Which of the following is NOT a malignant lesion of the eyelid? a) Squamous cell carcinoma b) Malignant melanoma c) Basal cell carcinoma d) Keratoacanthoma e) Karposi sarcoma 3. Which one of the following causes of red eye requires no treatment? a) Scleritis b) Anterior uveitis c) Acute closed-angle glaucoma d) Subconjunctival haemorrhage e) Episcleritis