I forgot my eyeglasses at home yesterday and struggled to read my phone all day. I enlarged the text on my phone to help but that just made it bigger but still looked blurry. If readers just magnify, why is the text sharper too?
In: Biology
If you can’t see sharply close to, your eye’s closest focus distance is too far away. Adding a small positive lens in front (or less negative if you are already short sighted) brings the close-focus point nearer to you, so reading distance is within the range that your eye can adjust focus to see clearly.
Latest Answers