Want to Work in Space? - Squinters Can Now Apply Poor eyesight has long been the bugaboo of many aspiring astronauts, disqualifying more would-be space travelers than any other physical requirement since the beginning of the U.S. astronaut program in 1959. Now, nearly a half-century after the program began, NASA is loosening its vision standards, allowing more men and women to reach for dreams of flying into space. As it kicked off recruitment of the 2009 candidate class this week,…
1989 In 1989, a United States patent was granted to Gholam A. Peyman, MD, for a method of modifying the corneal curvature of the eye with a laser-assisted surgical procedure in which a flap was cut in the cornea, the flap pulled back to expose the corneal bed, the exposed surface ablated and the flap replaced. 150 million More than 150 million Americans use corrective lenses to compensate for refractive errors. Americans spend more than $15 billion each year…
When it comes to choosing the right laser eye surgery, understanding the differences between LASIK and SMILE is crucial. Both procedures offer significant improvements in vision, but they differ in techniques, recovery times, and suitability for different eye conditions. This article explores the nuances of LASIK and SMILE eye surgery, providing detailed comparisons, answering common questions, and helping you make an informed decision. Understanding LASIK What is LASIK? Laser-Assisted In Situ Keratomileusis (LASIK) is a popular laser eye surgery that…
When it comes to vision correction surgery, two of the most popular options are PRK (Photorefractive Keratectomy) and LASIK (Laser-Assisted In Situ Keratomileusis). Both procedures aim to improve vision by reshaping the cornea, but they have distinct differences that make them suitable for different types of patients. This guide delves into the intricacies of PRK and LASIK, helping you understand their pros, cons, and suitability for your needs. Understanding PRK and LASIK What is PRK? PRK, or Photorefractive Keratectomy, was…
If you're considering LASIK surgery, you might wonder if you're a suitable candidate. A LASIK self-test is a preliminary online assessment that can provide insights into your eligibility for the procedure. This article will explore the various aspects of a LASIK self-test, its importance, and how it works. By the end, you'll have a comprehensive understanding of this valuable tool. What is a LASIK Self Test? A LASIK self-test is an online questionnaire designed to help you determine whether LASIK…
LASIK (Laser-Assisted In Situ Keratomileusis) is a common procedure that helps people achieve clearer vision by reshaping the cornea with a laser. After undergoing LASIK, many patients are eager to travel, especially by air. Here, we discuss when it's safe to fly after LASIK and how to make your journey comfortable. Initial Recovery and Recommendations Immediate Post-Surgery Phase After LASIK surgery, it's essential to rest and allow your eyes to begin the healing process. During the first 24 to 48…
Photophobia, also known as light sensitivity, is a condition where an individual experiences discomfort or pain in the eyes due to exposure to light. This condition can range from mild discomfort to severe pain and is often associated with various medical conditions. This comprehensive article explores photophobia, its causes, symptoms, diagnosis, and treatment options, focusing on its medical aspects. What Causes Photophobia? Medical Conditions Several medical conditions can lead to photophobia. These include: Migraines: Migraines are a common cause of…
Light sensitivity, or photophobia, can significantly impact daily life. Understanding and managing this condition is essential for maintaining comfort and eye health. In this article, we will explore various methods to alleviate light sensitivity, including practical tips, medical treatments, and preventive measures. Understanding Light Sensitivity Light sensitivity occurs when your eyes are overly sensitive to light. This can result from various causes such as eye strain, certain medical conditions, and even certain medications. Symptoms include discomfort in bright light, headaches,…
Add-on eye prescriptions, also known as supplementary prescriptions, are additional corrective lenses or adjustments to an existing eye prescription. These prescriptions are often necessary for individuals with specific vision needs that cannot be fully corrected with standard single prescriptions. Add-on prescriptions can enhance visual clarity, address multifocal needs, or provide additional correction for astigmatism, presbyopia, or other complex vision issues. Understanding Add-On Eye Prescriptions Add-on eye prescriptions are tailored adjustments that complement an existing prescription. They are commonly used in…
Hazel eyes are often regarded as one of the most captivating and enigmatic eye colors. They feature a blend of brown, green, and gold hues that can change appearance based on lighting and surroundings. This article delves into the prevalence of hazel eyes, their unique characteristics, and the genetic and environmental factors contributing to their rarity and beauty. Understanding Hazel Eyes Hazel eyes are characterized by their complex coloration, typically including shades of brown, green, and gold. The central part…