If the bifocal prescription includes a cylindrical correction (for astigmatism), you need to include this in the reading prescription. The ADD power value only affects the spherical component. This slide shows a sample prescription with astigmatism correction converted to single vision near focus. While the calculation is straightforward, it’s always a good idea to have … Continued
In order to derive the prescription for near vision from the bifocal prescription, simply combine the ADD power with the distance power to get the net near power. For a myope, the resulting number may be a negative number, and conversely it may be a higher positive number for a hyperope. In this particular scenario, … Continued
A typical bifocal prescription includes values for distance vision and an ADD power for near vision. The format looks like this:OD (Right Eye): -2.00 (distance) +2.00 (ADD)OS (Left Eye): -1.50 (distance) +2.00 (ADD) The distance part of the prescription is used for seeing far away. In the example above:OD: -2.00OS: -1.50 The ADD power value … Continued
Calculating the prescription for single vision readers from a bifocal prescription involves focusing on the ADD power value in the bifocal prescription, which indicates the additional correction needed for near vision. Before performing any calculations, be sure to review your state and local laws regarding what is allowable by a licensed optician in your area. … Continued
General Benefits of Single Vision Eyewear Simplicity: Single vision lenses offer a straightforward solution for specific vision needs, eliminating the complexity of adjusting to multiple focal points. Adaptation: Users typically find it easier to adapt to single vision lenses compared to multifocal lenses, as there are no transitions between different vision zones. Cost: Generally, more … Continued
Single vision lenses for near vision are typically prescribed for tasks requiring close focus, such as reading, sewing, or detailed work. Benefits: Precise focus: These lenses provide sharp, clear vision for close-up tasks, enhancing the ability to see fine details. Reduced eye fatigue: By offering a tailored solution for near vision, these lenses help reduce … Continued
Cost -Cost is one of the biggest barriers in healthcare. Many times, we have patients who won’t get something unless “insurance covers it”. If insurance doesn’t cover it, generally those who are on a low income budget or welfare are unable to purchase glasses or pay for exams/office visits. Or they have different priorities with … Continued
These are a few other less common ocular diseases with different ethnic groups, genders, geographical locations, and ages that are more commonly affected than others. Those that are more common in certain geographical areas are largely due to the vector through which people acquire the disease – with Lyme disease being more prevalent in areas … Continued
Macular degeneration is a huge cause of blindness in several across the world. The highest prevalence was found to be in Caucasian and Chinese people, with those who are of an older age being more commonly affected and having a worse prognosis. 10 years of data on AREDS2 was recently published and research supports many … Continued
Diabetes is a major issue, particularly in the United States. 1 in every 2 Americans has prediabetes or diabetes. Diabetic retinopathy is a common complication that results from diabetes. Generally, diabetes affects the smaller blood vessels. Most commonly affected organs include the eyes, kidneys, and extremities (hands and feet). This is important to keep in … Continued
Myopia is becoming a major issue across the world. Studies have already started suggesting this is largely due to our diet and lifestyle. Lifestyle can predispose someone to becoming myopic in several ways, some of the most common being increased near work (career or extracurricular) and inadequate Vitamin D levels. The two generally go hand … Continued
Anyone can get glaucoma, however African Americans over the age of 40, all people over the age of 60, and those with a family history of glaucoma or diabetes are at higher risk. Risk factors for African Americans include those who are over 40 years of age, have high myopia, diabetes, hypertension, or those who … Continued
Glaucoma is 5x more common in African Americans, with blindness resulting from glaucoma being about 6x more prevalent. Open-angle glaucoma is the leading cause of irreversible blindness in African Americans. It generally presents at an earlier age and progresses more rapidly in African Americans. Asian Americans are at higher risk for myopia given their lifestyle. … Continued
Understanding diversity, equity, and inclusion is fundamental in running a successful operation from any business standpoint. People are more likely to support businesses that are diverse, that appeal to a wide range of people, that treat everyone with equal respect (both consumers and employees), and that work as a team to foster an environment that … Continued
Click to download and print the course. To get the most out of this course, we recommend completing it in an environment free from distractions. Platform Instructions If you prefer to print the course and test questions, the PDF version is located below. Download & Print Courses are now broken down into Lessons. You can … Continued
Vertex Distance (VD) might need small adjustments and can be used to move the apparent Oc Ht or Segment Height up or down slightly. Use this adjustment sparingly as it can cause an effective power change in the lens. A general overview is contained in the following table. Some of these adjustments may seem contrary … Continued