Hyperopia (Farsightedness)

Transcript

Lt Col Reynolds
Hyperopia, or farsightedness, means that distant objects appear clearer than objects up close. Dr. Patel, can you tell us more about hyperopia?

Dr. Patel
Of course, Dr. Reynolds. In cases of hyperopia, light rays are not refracted enough, and the resulting image focuses on a point behind the retina instead of on the retina. This happens because the eye is too short or the cornea is too flat.

Younger eyes have a natural accommodating, or focusing, power that often compensates for farsightedness. But eyes become less able to accommodate as they age, which means that hyperopia most commonly becomes a problem later in life. A person with hyperopia may need no correction until they reach their forties or fifties.

Hyperopia can be corrected by any method that increases the total refractive power of the eye. Eyeglasses and contact lenses accomplish this by putting “positive” lenses in front of the eye. “Positive” lenses are thicker in the center than at the edge. Refractive surgery to correct hyperopia makes the central part of the cornea more steeply curved to allow the image to focus on the retina.