These two new materials (Acuity 200, Acuity Polymers and Infinite 200, Contamac) aim to provide a better environment for the cornea by providing more oxygen. . . RGP lenses are permeable so that they can allow. Gas permeable (GP) or rigid gas permeable (RGP) contact lenses offer many benefits compared to soft lenses. Clinical Contact Lens Practice. Romero-Rangel T, Stavrou P, Cotter J, et al. And each RGP contact lens is custom-made to parameters specified by the prescribing optometrist. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. However, after some time, you […] Advantages of Gas Permeable Contact Lenses Gas permeable contact lenses have a number of distinct advantages over typical soft contact lenses. Call us today to schedule an eye exam or learn more about rigid gas permeable lenses. The four main factors you need to consider are: Lens material. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. Please note that non-sphere lenses are priced at $94. Optometry. Gas Permeable Contact Lenses (RGP Or GP Contacts) Gas permeable contact lenses are rigid lenses made of durable plastic that transmits oxygen. Your eye doctor may call them GPs or RGPs. Paragon Vision Sciences (cont'd. Nonetheless, most practitioners consider gas permeable (GP) lenses the standard of care for rehabilitating vision due to irregular astigmatism. Gas permeable contact lenses (also called GP or RGP contacts) are an alternative to soft lenses. Soft contact lenses have their disadvantages too, including a higher rate of infection and less durability than gas. Boston Advance Conditioning Solution. GP lenses likewise are exceptionally long lasting. Tuesday: 8:45 AM - 6:00 PM. Boston Simplus Contact Lens Solution, for Gas Permeable Contact Lenses, 3. Here, well look at specific situations in which GP lenses can help correct corneal irregularity. Dr. • If the near segment is too far into the papillary area, truncate the lens to lower the segment height. Contact our team of specialty contact lens consultants to learn about. Carefully observe directions, warnings, and precautions on the inner cartons. Patients with less than 3. 8 This shows that selecting or changing lenses based on BC alone may not be most appropriate as sagittal height varies between lenses. DESCRIPTION OF LENSES The OPTIMUM GP (roflufocon A, C, D, and E) and Optimum GP with HPT (roflufocon C, D, and E) Contact Lens for Daily Wear is a rigid gas permeable methacrylate copolymer of M ethyl methacrylate, 1,1,1,3,3,3 - Hexafluoroisopropyl Methacrylate, Methacryloxypropyl TrisDisinfection of Gas Permeable Contact Lenses 1!! Disinfection of Gas Permeable Contact Lenses This material will help you understand how to disinfect gas permeable (gp or. When gas permeable contacts become cloudy, it’s usually due to tiny particles of dirt or debris that get stuck inside or around the lens. It can be managed by surgical and non-surgical means, rigid gas permeable (RGP) contact lens as its main non-surgical method is widely used in clinic. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. 1-800-GET-LENS ® - Popular Contacts - LOWEST PRICE GUARANTEE on all Popular contact lenses. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. Options such as soft, conventional corneal gas permeable (GP), hybrid and piggyback contact lenses all come with limitations that stymie success. These lenses will feel more comfortable than would a smaller corneal lens because only the inferior eyelid feels the lens during a blink. 1:13:33. As such, some patients may require additional cleaners. Gas-Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. 2. Eye doctor listings provide address and phone number and, if available, website or email address. One Step Liquid Enzymatic Cleaner is a simple and convenient way to effectively remove protein deposits weekly from gas permeable (GP) contact lenses to help maintain contact lens wearing comfort. This is an allergic condition, often due to protein build-up on contact lenses, as well as an eye allergy to components of contact lens storage solutions. The pre-lens tear film consists of the outer lipid layer of the tear film and a portion of the aqueous and mucin mixture. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. . Rigid Gas Permeable (RGP) or Gas Permeable (GP) Lenses Rigid Gas Permeable (RGP) also known as Gas Permeable (GP) lenses are effective for many hard to fit patients. Certain types of contact lenses can vault over the irregularly shaped cornea to help focus light properly. The children were given Claris solutions (Menicon USA. These rigid lenses offer the advantages of durability, crisp vision, and high oxygen permeability. These maps are best used for regular corneas to determine the starting spherical GP to place on the eye and. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. B. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. PMMA lenses were commonly prescribed years ago, but essentially have been replaced by gas permeable lenses. This is an exciting time for this vision-restoring modality and the industry has responded with ways to address the issues with lens fogging and poor wettability, as well as. These lenses are rigid in the center for higher visual clarity but soft at the edges for more comfort. The lenses were often difficult to remove at the end of […] Gas permeable contact lenses are another popular type of contact lens for astigmatism. Wash your hands with soap and water. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. Hybrid lenses try to combine the vision quality of rigid lenses with the comfort and stability of soft lenses, and they are a reasonable treatment for many keratoconic patients. Rigid gas permeable lenses. Lens thickness variance across scleral, corneal gas permeable (GP) and custom soft lenses is particularly evident with high back surface powers. Approved for all Soft & RGP Contact Lenses. Rigid Gas Permeable (RGP) lens maintenance and care regimes are crucial for minimising infection risk and ensuring long term, healthy, comfortable lens wear. 5 mm in diameter and cover only 75 to 80 percent of the cornea. The tear reservoir between the cornea and the lens can act as a treatment for dry eye, especially aqueous insufficient type. By combining the two types into one lens, hybrid contacts provide the clarity hard lenses are known for with the comfort associated with soft lenses. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses. Gas permeable (GP) contact lenses are made from rigid and oxygen permeable contact lens materials. RGP lens removal. Soft contact lenses are thin and flexible, so they mold easily to the shape of your eye. Dr. The latter situation is especially problematic with GP lenses: studies show that increasing the center thickness by 0. 2001-27:195-201. (Alcon) for cleaning and disinfection. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. 5mm to 12. Generally, fitting gas permeable contact lenses takes more time and expertise than fitting soft contact lenses (including toric soft lenses). If the lens is stuck on the white of the eye, use the pad of your fingertip to gently press your eye just outside the edge of the lens to break the suction that is keeping the contact stuck in the eye. About a decade or two ago, you might have thought that you had seen it all when hard contact lenses were ruling the day. Specialized Uses of. Options such as soft, conventional corneal gas permeable (GP), hybrid and piggyback contact lenses all come with limitations that stymie success. 3. 2 mm diameter Menicon Z, 7. Contact Lens Spectrum. Sometimes, whether due to. Treating the ocular surface, changing lens materials and switching cleaning regimens are. Blink hard and your lens will pop out. 50D of with-the-rule astigmatism. Rigid gas permeable (RGP) are also known as ‘hard’ contact lenses are also used for the correction of astigmatism. Clinical investigation of the Paraperm EW rigid gas permeable contact lens. Gas Permeable (GP) contact lenses have many benefits and are often better than soft lenses because. The proof is in the numbers. ” Getting oxygen to the eye reduces the risk of problems caused by hypoxia (reduced oxygen supply). Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. PMMA lenses were commonly prescribed years ago, but have essentially been replaced by gas permeable lenses. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. 50D or greater. While these lenses are rigid, they should not be confused with the hard contact lenses of decades past. GP lenses vault over the cornea, replacing its irregular shape with a smooth, uniform refracting surface to improve. A zip code search provides the 25 closest results within a 100-mile radius. Silicone hydrogel contact lenses: A complete guide. 3. Skip to main content. Lippincott, Williams, and Wilkins. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. 96 ± 0. GP gas-permeable, RGP rigid gas. The goal of our optometrists is achieving exceptional family eye care with complete patient satisfaction. GP lenses allow your eyes to "breathe. GP lenses are made of durable plastic that allows more oxygen and moisture to reach your eyes. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. To understand soft contact lens (SCL) and gas-permeable (GP) lens wearers' behaviors and knowledge regarding exposure of lenses to water. When gas permeable contacts become cloudy, it’s usually due to tiny particles of dirt or debris that get stuck inside or around the lens. scleral rigid gas permeable contact lenses for keratoconus and other. Fitting hybrid contact lenses — like fitting gas permeable contacts — takes more time and expertise than fitting soft contact lenses. FIGURE 7. (3. Hybrid contact lens fittings and lens replacements are comparable in cost with those of rigid gas permeable lenses (in other. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. In terms of comfort, visual clarity and stability, scleral lenses are superior to gas permeable lenses. Toric lenses to correct astigmatism in non-aphakic and aphakic patients. Indicate if plasma coating is desired. Caring for. permeable (gp or hard) contact lenses. She reported night vision difficulties and horizontal injection. Triple Action Cleaning – Deep Cleans, Loosens Dirt, Enhanced Protein Removal. The first PMMA lenses could be classified as hard, whereas modern RGP. 5 oz) R1200. 5 Combination Lenses; 3. There are two categories of contact lenses based on. O ffering optimal visual acuity and contrast sensitivity, as well as a lower risk of complications, gas permeable (GP) lenses are an effective option for many patients, particularly those with high corneal astigmatism. The question of which contact lens is best for you should ultimately be decided in. One Step Liquid Enzymatic Cleaner is a simple and convenient way to effectively remove protein deposits weekly from gas permeable (GP) contact lenses to help maintain contact lens wearing comfort. 94mm, 7. As opposed to soft silicone hydrogel contact lenses, GP lenses retain their shape better, giving them more a “rigid” feel during wear while still allowing oxygen to pass through the. B. If you are experiencing contact lens discomfort, schedule a visit with your eye doctor for a comprehensive examination. Email: info@edmondsvisioncenter. A GP-type lens, whether it be corneal GPs, hybrids or sclerals, works well to mask corneal irregularities and diminish higher-order aberrations. However, if the cornea is affected, ODs will need to consider using gas permeable (GP)s contact lenses that produce a new refractive surface. Rigid gas-permeable (RGP) contact lens fitting after penetrating keratoplasty (PK) is challenging due to significant irregular astigmatism. Hydrogen peroxide-based solution cleans. , visit the Gas Permeable Lens Institute’s searchable online database: . Staring straight ahead, slowly bring the RGP lens toward your eye and gently place it in the center of your eye. Nau AC. They have proven to become a very successful replacement for hard lenses (PMMA). Gas permeable lenses, however, trap. Boston Simplus - a one-bottle lens care system that not only cleans, disinfects and conditions gas permeable (GP) contact lenses,… Read more. 3. For GP lenses, Clear Care’s indication includes a digital rubbing step. GP lenses. Lens adherence, although it generally does not go unmentioned. Scleral lenses rarely become cloudy, unless due to a. The use of rigid gas permeable contact lenses in scarred corneas. Soft contact lenses can correct nearsightedness (myopia), farsightedness (hyperopia), blurred vision (astigmatism), and age-related loss of close-up vision (presbyopia). Then I went into soft lenses, but the dry eyes bothered me a little, so I went into GP lenses. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. Located Inside LensCrafters Serving Akron, Cuyahoga Falls & Tallmadge. 2. Release your eyelids and check for clear and comfortable vision. Method: Gas permeable (GP) CLs have been found to achieve better best corrected visual acuity than spectacles, eliminating 3rd-order coma root-mean-square (RMS) error, 3rd-order RMS, and higher-order RMS. Tuesday: 8:45 AM - 6:00 PM. 2. Thursday: 8:00 AM - 5:00 PM. Bifocal / multifocal contact lenses. L. 2mm, is designated for near. Because they are custom. 1. Despite their name, ‘rigid’ gas permeable contact lenses are actually quite flexible. Wettability of GP contact lens materials. Advantages of Gas Permeable Lenses. GP lenses provide sharper vision than soft lenses which can fluctuate in shape and clarity as they start to dry out. During this live webinar, we discuss some some simple RGP designs, how to insert and remove an RGP lens, the fitting characteristics of RGP lenses and how to assess an RGP lens on the eye. is the MiSight 1-day lenses by CooperVision. Twenty subjects were randomly fitted with both soft and GP lenses. Development of the AGREE II, Part 2: Assessment of validity of. Also, GP lenses may not be as durable as PMMA lenses. Key is in private practice in Houston and serves as clinical professor of ophthalmology at Baylor College of Medicine. 8. Gas permeable lenses, also called GP lenses, are “rigid” lenses that are made up of different types of plastics. Wash your hands with soap and water. 1. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. Call Conroe 936-441-3937; Call The Woodlands 281-363-2020; Call Louetta 281-350-2020; Call Greenspoint 281-876-2020; Call Kingwood 281-360-1006; Call Grand Parkway 281-408-2020Below is an in-depth explanation of the different types of contact lenses. GP lenses have a smaller diameter than soft contacts, meaning. Enhanced comfort through edge lift control. Gas permeable contact lenses are another popular type of contact lens for astigmatism. Soft lenses conform to the shape of the cornea and have only minimal movement with blinks, so little or no tears circulate under soft lenses. Shop contact lenses. GP contacts are made of a firm. Advantages of Gas Permeable Lenses. Though costs are initially higher than traditional contact lenses, in the long term they are more cost-effective, and unlike disposable lenses, they don’t require ongoing replacement. Shaughnessy MP, Ellis FJ, Jeffrey AR, Szcotka L. Gas-Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses and are made from a. Unlike eyeglasses, you can place them directly on the eye. Indications. Hybrid lenses are more comfortable than corneal GP lenses. Silicone hydrogel contact lenses: A complete guide. 90 per lens. If a patient has a 6. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. GP contacts are made of a firm. Hybrid multifocal contact lenses can be fabricated in both a concentric and aspheric progressive lens design. Lenses. This aspect also allows for more predictable correction with multifocal optics. Using your middle finger on your dominant hand, pull your lower eyelid down. brand 1-800-GET-LENS ® - Gas Permeable Contacts - LOWEST PRICE GUARANTEE on all Gas Permeable contact lenses. Well known for their exceptional visual performance, GP lenses, also referred to as gas permeable or rigid gas permeable (RGP) lenses, are often not immediately associated with. Contact lenses Gas-permeable lenses. Modeling Corneal Oxygen with Scleral Gas Permeable Lens Wear. Rigid gas-permeable contact lens problem solving. Follow these steps to safely remove a gas permeable. 85mm), a steeper base curve lens was ordered (7. Empirical fitting of soft or rigid gas-permeable contact lenses for the correction of moderate to severe refractive astigmatism: a comparative study. 3. Effect of large diameter and plasma coating on the initial adaptation of gas permeable contact lens fitting for neophytes. Contact Lenses for Keratoconus- Current Practice Open Ophthalmol J. Cont Lens Anterior. Uçakhan ÖÖ, Yeşiltaş YS. The locations of the powers in a concentric design can vary: GP bifocals usually have the distance power in the center (called center-distance). Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. The correction of refractive disorders in keratoconus, using lenses, includes gas permeable (GP) contact lenses, soft or scleral lenses, hybrid contact lenses and piggyback systems. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. Gas Permeable Contact Lens. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. In the United Kingdom, Pullum et al. 3 If your gas permeable (GP) lenses get stuck, avoid massaging your eyelid, as this risks scraping your eye surface (corneal abrasion). Objectives: To assess the percentage of successful rigid gas permeable (GP) contact lenses (CLs) fit for both refractive and therapeutic reasons. A zip code search provides the 25 closest results within a 100-mile radius. When gas permeable contacts become cloudy, it’s usually due to tiny particles of dirt or debris that get stuck inside or around the lens. For example, soft contact lenses may not provide adequate visual acuity, standard GP lenses can decenter or dislodge and the intricacies of piggyback lens systems can be difficult for some patients. These lenses also are called GP lenses, rigid gas. From GP Lens Institute. Contact him at (515) 243-1667. Toric Contact Lenses for Astigmatism. Wear schedule. The fitting of corneal GP lenses is less time-intensive and often requires fewer follow-up visits. Office updates and offering Telehealth appointments at all locations! Midtown 646-916-4588; Wyckoff 201-729-3319;There are three primary types of contact lens solutions: multipurpose solution, hydrogen peroxide-based solution, and rigid gas permeable solution. Another option is to use a small "suction cup" device sold in the contact lens care section of drug stores. MMA contact lenses are rigid contact lenses that look like GP lenses but are made of a plastic material that is not oxygen permeable. These often provide the best of both worlds for correcting astigmatism with contact lenses. Phone: 425-771-7772. Gas permeable lenses are a very good option and can be quite. (Contact your Authorized Boston ® Manufacturer for further details). GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. We offer state-of-the-art technology and products to meet your vision needs and have two convenient locations. We also proudly offer our in house multifocal design (High. “Think about other options. Home; Locations. ClearKone-Synergeyes or rigid gas-permeable contact lens in keratoconic patients: a clinical decision. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. Menicon Progent is a highly effective deposit and protein remover compatible with all GP contact lenses. 6 Lenses for Post-Hypermetropic Repairs and Iatrogenic Corneal Ectasia; 3. People with specific vision problems may find. 3. 3. Hard lenses are often interchangeably referred to as rigid gas-permeable lenses (RGPs); however, this is not strictly true. 15K views 11 years ago. Today’s high-Dk GP contact lenses provide increased oxygen such that a bitoric GP can be prescribed with the toricity that closer matches the corneal toricity. gas permeable contact lenses typically last up to 1 year. The tear reservoir, in this larger 10. Table 2 shows the mean BOZR of the diagnostic lens. Rinse the stuck contact and your eye for a few seconds with a steady stream of sterile saline, multipurpose contact lens solution or contact lens rewetting drops. 9mm or 2. Boston EO® and Boston ES® are rigid gas permeable materials for demanding visual needs, with high flexural resistance—excellent for thin and ultra-thin. 1. You might also hear gas permeable lenses called: GP lenses. 38 mm. ESSential Multifocal GP lenses utilize an alignment fitting philosophy that ensures long-term corneal integrity and. Gently press the concave end of this. They should be. Dry your hands with a clean, lint-free towel. Monday. Even though modern soft contacts and gas permeable lenses are more breathable than older designs,. 2. 1,2 They are similar to the piggyback system in that they, too, provide the optical quality of a GP. 12 Another 350µm should also be included to account for necessary corneal clearance. Think hybrids and sclerals. 2. Disposable (Replacement Schedule) Contact Lenses. They are also used in Orthokeratology (ortho-k), a vision-correcting procedure in which you wear the lenses at night to reshape your cornea for improved vision during the day. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. Intralimbal lenses (10. In a recent study, 44 lens designs of different daily disposable, two-week replacement, four-week replacement and toric lenses were evaluated for contact lens sagittal height and ranged from 3,372µm to 4,157µm. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. Tuesday. 1,2 While these lenses work well at masking corneal irregularities, they often require a significant adaptation period for patients. Corneal thickness changes during scleral lens wear: effect of gas permeability. 5 Fl Oz. Using the various indicators of corneal shape can help understand the cornea and assist in lens design. doi: 10. His practice is devoted to specialty contact lenses and orthokeratology. Boston Conditioning Solution – Improved Formula + More Details - Less Details. This data demonstrates that the majority of corneas are flatter nasally, which can cause soft lenses to decenter towards the nose. While each provides its own unique. Nutrifill is a unique physiologic formula that, in addition to sodium, contains calcium, magnesium. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. 2 These so-called 3 and 9 o’clock areas may not be adequately resurfaced with tears after a blink, thus resulting in small desiccated. 2009;80(7):375-83. Gas permeable contact lenses offer some impressive benefits over soft lenses. The hard, oxygen permeable material lets the eye breathe and significantly reduces the chance of infection due to protein deposits which tend to harbor bacteria on soft lenses. Results. Rigid gas permeable (GP) contact lenses (CLs) are the first option in keratoconus patient management[1,2,3] because they provide better visual rehabilitation and improve the quality of life of these patients. We offer a wide range of contact lenses to suit most people. Figure 2. 1. The heights are measured above and below the reference sphere; red above and blue below. 3% of keratoconus eyes and 100% of keratoconus suspect eyes achieved a VA of 0. Call Us! 512-258-2020. CLAO J. GP contact lenses clean and disinfect easily, don’t dehydrate, are easier to handle, and last. Simply soaking the lenses for 30 minutes will ensure the removal of deposits. Long-term PMMA wearers frequently have problems with the comfort of GP lenses, as well as dryness. Ordering cheap Boston RGP contact lenses is fast and easy on DiscountContacts. Wash your hands with soap and water. 0mm pupil, the. Gas Permeable Contact Lenses (RGP Or GP Contacts) The cornea (clear part at the front of your eye) requires oxygen to stay clear and healthy. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. View all Topics. Gas Permeable (GP) or Rigid Gas Permeable (RGP) contact lenses are an alternative to soft contact lenses that are made from a hard, oxygen permeable material. 9. Lecturer: Jason Chin, OD, FAAO, New England College of Optometry, Boston, USA. Her visual acuity was 20/50. 2mm near-center design, while the aspheric lens design has a 3. Follow these steps to safely remove a gas permeable. Patients with up to 2. The proof is in the numbers. How do I put in gas permeable contacts? When putting in gp lenses, follow these steps: 1. Of the various types of gas permeable lenses, the most underutilized and underrated are small-diameter corneal GP lenses. Hansen is an optometrist in private practice with more than 30 years of RGP and bifocal contact lens fitting experience. Abdalla YF, Elsahn AF, Hammersmith KM,. Experienced consultants to assist with contact lens design, fitting, troubleshooting and corneal topography analysis. Rev. Eye Contact Lens. GP lens wearers who present with dry eyes can usually be easily managed once we as practitioners determine the cause of the dryness. 2000;130:25-32. Fig. 1 This is especially true given the increased uptake of overnight lens wear in children being treated with orthokeratology for myopia control. Eye doctor listings provide address and phone number and, if available, website or email address. The GP lens can be made with single vision optics or multifocal optics, which can give patients more options when it comes to multifocal designs. GP lenses are currently less popular than soft lenses but offer a number of advantages and are continuing to improve as research and technology advance. They are called gas permeable contact lenses (GP, GPL, GPCL or RGP), or merely rigid contact lenses, and they usually contain silicone acrylate or fluorosilicone acrylate. While not as popular as soft contact lenses, gas permeable lenses, or hard contacts, do have their advantages. 00D of with-the-rule astigmatism. These materials can be made into a wide range of special designs for demanding visual needs, including: Spherical and aspherical contact lenses for myopia and hyperopia, and irregular corneal conditions, such as keratoconus.