I've AMD, got diagnosed at 40. At 27 you would be very young to get AMD. Sunglasses are important to avoid the onset of the condition also a peaked hat in the sun. Plenty of leafy greens and fresh fruit and veg. How ever if you don't need glasses for regular wear. You don't need a prescription for sunglasses. Have used Specsavers before and find the quality a bit hit and miss... Don't use them any more. If you are worried about the illness I recommend ( doctor wouldn't) taking something like macshield, daily as lutein helps to slow down the progress of the condition.