Alta Bates IVF Program Please visit us at our new location:
2101 4th Avenue, Suite 1360 Seattle WA 98121.
Call Us: 206.623.1758

Understanding Focusing Problems

Sharp vision depends on many factors. The parts of the eye work together to refract (bend and focus) light rays. For normal vision, light must focus onto the retina. If the cornea or the eyeball as a whole is not the right shape, light doesn't focus correctly and vision is blurry. Common focusing problems include myopia, hyperopia, and astigmatism.


Emmetropia (normal vision) is maintained when light focuses on the retina.


Hyperopia (farsightedness) occurs when light focuses behind the retina. Nearby objects appear blurry.


Myopia (nearsightedness) occurs when light focuses in front of the retina. Distant objects appear blurry.


Astigmatism occurs when light focuses in more than one place. Both nearby and distant objects are distorted.

If You're Over 40

With age, muscles around the lens become stiff. Stiffening of these muscles makes it harder for the lens to accommodate (change shape to focus light). This leads to presbyopia (difficulty focusing on nearby objects).

Date Last Reviewed: 2005-08-25T00:00:00-06:00

Date Last Modified: 2005-08-25T00:00:00-06:00


We see patients from the downtown Seattle, Belltown and South Lake Union areas of Seattle in King County, WA.

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Our Staff

Dr. Feiten was born and raised in Wisconsin, attending the University of Wisconsin-Oshkosh for her undergraduate studies. She graduated from Pacific University with her Doctor of Optometry degree in 1987. She practiced in Kentucky for seven years, receiving the Young OD of the Year Award in 1994.

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Contact Us

2101 4th Avenue, Suite 1360
Seattle, WA 98121
Fax: 206.623.1759
Map and driving directions