Corrective Lenses

toddler wearing glasses

Corrective lenses are used to correct deviations, adjust focal points or neutralize other anomalies that impact the eyes’ ability to focus an image on the retina. To do this, the lenses must be the correct type and of the right power. Strength – which is expressed as diopeters – relies on the material of the lens, as well as the slope of the curve that is grounded into the lens. For instance, if the person is nearsighted and has trouble viewing objects far away, the lens will be concave, or thicker at the edges than in the middle, to allow for distant objects to come closer to the eyes. On the other hand, if the individual is farsighted and has a problem seeing objects up close, the lens will be convex, or thinner at the edges and thicker in the center. Convex lenses, unlike concave ones, bend toward the focal point, which makes the image appear larger than the object actually being seen.

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Tuesday:

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Wednesday:

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  • "Dr. Casas and her staff are so patient and friendly. Dr. Casas prescribed glasses and I had the toughest time picking out frames. They didn’t rush me, but instead made helpful suggestions and now I have an awesome pair of frames, not to mention the fact that I can see ten times better than before. You guys are the best!"
  • "I’ve been going to Dr. Casas for over five years now and even though I only see him once a year for my annual exam, he and his staff always make me feel very welcome and take care of all my eye care needs. Dr. Casas and Associates is the best at what they do and make you feel right at home."
  • "I was having headaches and felt my contacts were easily drying out all the time. I went in to see Dr. Casas and after an evaluation, he suggested a switch in the type of lenses I use. Within a week of using the new lenses, I noticed a change and haven’t had any problems since. Thanks, Dr. Casas!"
  • "I had considered Lasik surgery in the past, but was still hesitant about the process. Dr. Casas was very thorough in her consultation with me and answered all of my questions, making me feel comfortable with going forward with the procedure. I’m so glad I did the Lasik, it has been of great convenience to me and my sight has never been better"

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