Defective vision is the inability to see clearly. Defective vision may be of two types - myopia or short-sightedness. It refers to a condition when a person is unable to see far-off objects clearly. The other is hyperopia or long sightedness which is a situation when a person cannot focus and thus cannot see closer things properly. The blurred vision is also at times accompanied by itching and heaviness in the eyes. Also the patient may suffer from a mild headache. There are several causes for defective vision in a person. While some are due to external factors, the others may be internal. Though the problem may not be cured completely, using home remedies one can lighten the effect. Learn how to cure defective vision using home remedies.