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Semel Vision Care & Aesthetics
Premium Eye Care in El Segundo, Manhattan Beach, & Redondo Beach
Optical Shop
In addition to the comprehensive ophthalmology services provided at Semel Vision Care & Aesthetics, our practice also features an optical shop with a wide array of eyeglass frames and contact lenses to suit every budget. We offer patients frames from many elite designers, as well as stylish yet affordable alternatives. We also carry a full line of frames for children and teens.
Our convenient onsite location also eliminates the hassle of having to take your prescription to another location in order to fill your vision correction needs. In addition to eyeglasses and contact lenses, we also provide sunglasses, sports glasses, goggles and other forms of safety and athletic eyewear.
When visiting our optical shop, patients will be seen by one of our experienced optometrists, who will help you decide which type of glasses or contacts are best for you. Once you make your decision, the optometrist will fit you for your chosen frames or contacts to ensure that you receive the best possible results from your vision correction from a practice you trust.
To learn more about our optical shop, call us today at (310) 641-1700 or stop in to see the wide array of products we currently offer.
Contact Lens Fitting
Thanks to advances in optical technology, almost everyone can now wear contact lenses, regardless of the type or extent of their vision problems. Unlike glasses, contact lenses move with your eyes so you can enjoy a larger field of vision with fewer distortions. You also don’t have to deal with frames hovering in your peripheral vision or external lenses that fog up on cold days or get wet in the rain.
There are many different kinds of contacts, including rigid and flexible, extended wear, disposable and planned replacement lenses. Some can be made as bifocals or in different colors. After a thorough eye exam and consultation with an experienced physician, patients who qualify for contact lenses can discuss which type is right for them.
Once the most appropriate type of lenses have been chosen, additional customization is required through our lens fitting services. As each person’s eye is a different size and shape, so are the contact lenses that cover it. In order to achieve optimal levels of vision correction and comfort, patients must be fitted for contact lenses so that your doctor can prescribe the right kind for your individual eyes.
Contact lens fitting is done by measuring the corneal diameter and curvature to ensure centered and stable vision. This is done with an instrument called a keratometer, which is a machine like a digital camera that measures the curvature of the cornea and produces K-readings. Additional measurements, known as corneal topography, are also taken to create a map of the eye and determine the best fit.
Bifocal Contact Lenses
Bifocal contact lenses are an advanced type of lenses ideal for patients suffering from nearsightedness as well as presbyopia, a natural change to the eyes that occurs around the age of 40 and affects near vision. They provide clear, customized vision at all distances, eliminating the need for glasses without surgery.
These lenses are available in soft materials, rigid gas permeable, or a new silicone hydrogel material, which allows more oxygen to reach the cornea. There are also several vision correction options for these lenses, which may include alternating lenses (similar to bifocal glasses), concentric lenses (alternating circles of near and distance correction), or aspheric lenses (blended vision correction similar to progressive eyeglasses). The best type of lenses can vary depending on the preference and specific needs of the patient.
IScription Lens Technology
Is our understanding of refraction still relevant?
Why our approach to refraction matters.
Traditional refraction remains the foundation for eyeglass prescriptions and involves a two-step process:
1. Objective Refraction
The refractive errors of the eye are initially assessed using objective methods such as retinoscopy or autorefraction.
2. Subjective Refraction
The eye doctor then refines the prescription subjectively, allowing the patient to compare their vision through trial lenses, often using a refractor head or trial frame.
During subjective refraction, different lens powers are tested to correct common refractive errors—like myopia (nearsightedness), hyperopia (farsightedness), and astigmatism—which are considered low-order aberrations (LOAs).
However, variations in pupil size caused by changes in lighting conditions can introduce additional visual distortions known as high-order aberrations (HOAs). These include issues like coma, trefoil, and spherical aberration, which can negatively impact the overall quality of vision experienced by the wearer.
How does i.Scription Technology work?
i.Scription® Technology by ZEISS is based on the ZEISS eye measuring system called the i.Profiler® plus, specifically designed to determine the exact "fingerprint" of the eyes and provide measurements unique to the patient’s eyes.
A ZEISS i.Scription prescription takes the effects of low and high order aberrations on retinal image quality into account by measuring up to 1,500 points on each eye. This is done to provide improved vision corrections that deliver optimal visual performance over a broader range of luminance levels, even under demanding viewing conditions like night driving.
i.Scription® Technology analyses the circle of least confusion to provide the most accurate prescription possible.
Let’s take a closer look:
Wavefront aberrations represent a convenient way to characterize complex optical errors produced by an optical system. At any point across the aperture of the optical system, such as the pupil, the wavefront error is the effective optical separation between the actual aberrated wavefront and the ideal reference wavefront.
The overall shape of the wavefront aberration can be modelled and quantified mathematically and modelled using polynomials. Zernike polynomials are used to characterize the optical aberrations of the eye.
What are low order aberrations (LOAs)?
LOAs are associated with the sphere and cylindrical power of the eye or optical lens; they include defocus and oblique- as well as with-the-rule/against-the-rule astigmatism. They have the greatest impact on the quality of vision and are traditionally corrected with prescription eyeglass lenses or contact lenses.
What are higher order aberrations (HOAs)?
HOAs characterize the more subtle deviations of an aberrated wavefront from the ideal shape. They tend to have less impact than LOAs on the quality of vision. HOAs tend to have a greater impact on visual performance at lower luminance levels when the individual's pupil is larger than average, such as when driving at night.
i.Scription® Technology combines low-order (LOAs) and higher-order aberrations (HOAs) to provide the most accurate prescription for better vision day and night by analyzing the image quality in the retina.
Why is i.Scription® Technology particularly beneficial in low light conditions?
Conventional manifest refraction is performed in well-illuminated rooms, leading to prescription values that work well in daylight situations. However, as the pupil dilates in low light conditions, the peripheral aberrations of the eye can lead to refractive shifts, resulting in a conventional prescription which is no longer valid.
Optimal Day and Night Vision:
i.Scription® Technology is able to combine the information about peripheral aberrations provided by i.Profiler® plus with manifest refraction. The result is an optimized, personalized prescription, delivering optimal day and night vision for the patient.
Both eye care professionals and patients will enjoy the benefits
Benefits for eye care professionals include:
- Offering a personalized vision solution tailored to each patient.
- Delivering the most accurate prescription to enhance both vision and the overall viewing experience.
- Refining the refraction to 1/100th of a diopter for precision.
- Reducing chair time by optimizing the refraction process.
- Providing a competitive edge that sets you apart from others in the field.
Patient Benefits:
Everyone perceives the world uniquely. Ensure that you offer each of your patients a personalized vision solution that meets their specific needs.
Patients will experience the advantages of ZEISS technology in the following ways:
- Improved vision, both day and night
- Enhanced resolution, sharper contrast, and more vibrant colors
- Reduced glare for a clearer, more comfortable visual experience
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About Dr. Semel
Board-Certified El Segundo Ophthalmologist
Dr. Jane Semel is skilled, respected, and board-certified and fellowship trained in Ophthalmology, and is licensed to practice in the state of California. She specializes in the treatment and prevention of eye disease.
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