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Dr. David J. Nota
Doctor of Optometry
224 Avenida Del Mar Ste A
San Clemente, CA 92672
P: 949-492-2029
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Visual Disorders - Refractive Errors 
Myopia is the medical term for nearsightedness and is a vision condition in which close objects are seen clearly, but objects farther away appear blurred. Nearsightedness occurs if the eyeball is too long or the cornea, the clear front cover of the eye, has too much curvature. As a result, the light entering the eye isn’t focused correctly and distant objects look blurred. Some of the signs and symptoms of myopia include Headaches, Eyestrain, and Squinting.


Hyperopia is the medical term for farsightedness and is a vision condition in which distant objects are usually seen clearly, but close ones do not come into proper focus. Farsightedness occurs if your eyeball is too short or the cornea has too little curvature causing light entering your eye to not focus correctly. Common signs of farsightedness include difficulty in concentrating and maintaining a clear focus on near objects, eye strain, fatigue and/or headaches after close work, aching or burning eyes, irritability or nervousness after sustained concentration.


Presbyopia is a vision condition in which the crystalline lens of your eye loses its flexibility, which makes it difficult for you to focus on close objects. Presbyopia may seem to occur suddenly, but the actual loss of flexibility takes place over a number of years. Presbyopia usually becomes unnoticeable in the early to mid-40s. Presbyopia is a natural part of the aging process of the eye. It is not a disease and it cannot be prevented. Some signs of presbyopia include the tendency to hold reading materials at arm's length, blurred vision at normal reading distance and eye fatigue along with headaches when doing close work.
 
San Clemente Optometry
 
Anatomy of the Eye
San Clemente Optometry
 

Astigmatism is a vision condition that causes blurred vision due either to the irregular shape of the cornea (the clear front cover of the eye) or sometimes the curvature of the lens inside the eye. An irregular shaped cornea or lens prevents light from focusing properly on the retina, the light sensitive surface at the back of the eye. As a result, vision becomes blurred at any distance. Instead of the cornea having a symmetrically round shape (like a baseball), it is shaped more like a football. Astigmatism is a very common vision condition. Most people have some degree of astigmatism. Slight amounts of astigmatism usually doesn't affect vision and doesn't require treatment. However, larger amounts cause distorted or blurred vision, eye discomfort and headaches. Astigmatism frequently occurs with other vision conditions like nearsightedness (myopia)/and farsightedness (hyperopia). Together these vision conditions are referred to as refractive errors because they affect how the eyes bend or "refract" light.
 
San Clemente Optometry 224 Avenida Del Mar Ste A San Clemente, CA 92672 Phone: (949) 492-2029

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