Lens Comparison. Contact Lenses. These rigid lenses aren’t as popular or well-known as soft lenses, but they offer the advantages of durability, crisp vision and high oxygen permeability. In comparison, most conventional gas permeable contact lenses are 9. 2,4,5 It covers the outer surface of the lens and provides the smooth optical surface required. 3 (decimal) (20/40). Hashemi H, Shaygan N, Asgari S, et al. Coral Springs, FL 33065 800-852-8089. Rigid gas permeable or simply gas permeable (GP) lenses can be mistaken for the hard contacts of the past, but they are much more flexible, comfortable, and allow oxygen to get to. [ePub ahead of print]They’re available as soft or GP lenses. Gas permeable (GP) contact lens performance is highly dependent on the quality of the lens surface. Gas permeable (GP) contact lenses, also known as rigid gas permeable (RGP) lenses, are hard contact lenses made of silicone-containing compounds that allow oxygen to pass through the lens material to the eye. Stay Home, we've got you covered! (November 17th - fully stocked & shipping) 1-800-570-LENS (570-5367) Login. 1,2 Toric lenses have two powersHard contact lenses that are made of silicone-containing compounds which allow oxygen to pass through the lens material to the eye are Gas permeable (GP) contact lenses, or rigid gas permeable (RGP) lenses. Rigid Gas Permeable (RGP) Contact Lenses These lenses are made of a firm durable plastic that transmits oxygen. 21. Stamper Optometry provides patients in San Francisco, CA with Gas Permeable Contact Lenses for those who need. Shop online at 1-800-GET-LENS ® for your Gas Permeable contact lenses online or call toll-free 1-800-GET-LENS. For GP lenses, Clear Care’s indication includes a digital rubbing step. Rigid gas permeable or simply gas permeable (GP) lenses can be mistaken for the hard contacts of the past, but they are much more flexible, comfortable, and allow oxygen to get to. Their ability to transmit oxygen reduces eye problems such as dry eyes caused by reduced oxygen that are common in many brands of soft lenses or hard (non-GP) lenses. The advent of soft disposable contact lenses permanently altered the contact lens landscape, resulting in the decline of corneal gas permeable (GP) lens fitting. Manufacturers quote the wetting angle of a given material as measured at 7 days after soaking. (September, 2016). Name: Rigid gas permeable contact lens. lemaster • Oct 19, 2015. Skip to main content. To understand soft contact lens (SCL) and gas-permeable (GP) lens wearers' behaviors and knowledge regarding exposure of lenses to water. Using the various indicators of corneal shape can help understand the cornea and assist in lens design. If fitting a 15mm lens, 2,000µm—the average sagittal height for most eye types from a chord length of 10mm to 15mm—will need to be added. 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. Gas Permeable Lenses. GAS-PERMEABLE (GP) LENSES. Paragon Vision Sciences (cont'd. Review of Cornea and Contact Lenses. Contact Lenses for the "Hard-to-Fit" Patient. 2000;219(5740):18-24. According to the Amsler–Krumeich classifications, we included 18 eyes in stage 1, 35 eyes in stage 2, and 28 eyes in stage 3. 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. 0 to 9. In the last year, two new GP materials were launched that may be useful in the fitting of scleral lenses. Gas permeable (GP) or rigid gas permeable (RGP) contact lenses offer many benefits compared to soft lenses. Soft contact lenses are the most commonly prescribed due to the fact that they are extremely comfortable. Read More. 58. 4. Extended Wear Contact Lenses. Advantages of 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. Jul-Aug 1992;29(4):243-245. DESCRIPTION OF LENSES The OPTIMUM GP series of contact lenses are fabricated from the hydrophobic contact lens materials (roflufocon A), (roflufocon C), (roflufocon D), & (roflufocon E). Facebook Twitter Youtube Linkedin Pinterest. GP contact lenses are custom made for each patient based on the eye’s individual curvature, size, corneal shape. Fitchburg, MA . These rigid lenses aren’t as popular or well-known as soft lenses, but they offer the advantages of durability, crisp vision and high oxygen permeability. Piggyback fitting, which involves placing a soft lens. The mean BOZR fitted in keratoconus eyes was 7. Rigid gas permeable contact lens correction of aphakia following congenital cataract removal during infancy. Hard ( PMMA) lenses, the original type of contact lens, now virtually obsolete. The multifocal contact lenses used to correct presbyopia can also help slow progression. Whereas steps 1 and 2 are common to all lenses including PMMA and soft lenses, step 3 is not well understood by patients and practitioners alike. The advent of soft disposable contact lenses permanently altered the contact lens landscape, resulting in the decline of corneal gas permeable (GP) lens fitting. To access addresses, phone number, etc. The mainstay of treatment for a patient with keratoconus is a gas-permeable contact lens. PMMA lenses were commonly prescribed years ago, but have essentially been replaced by gas permeable lenses. Scleral lenses usually last for up to 3 years, but as with all types of. 5 mm in diameter and cover only 75% to 80% of the cornea. 15 (Snellen chart), respectively. For rigid gas permeable lenses. The patented, ultra-smooth, non-stick surface resists dirt and debris so lenses stay fresh. All are FDA. GP contact lenses are also known as rigid gas permeables, or RGPs. 1-855-286-2020. 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. 4 percent of this age group), and 33. GP Scleral Contact Lens - ultimate control of the complete fit!. Optician. If a patient has a 6. GP lenses are durable and long-lasting. Concentric bifocal lenses can be made of either soft or rigid gas permeable (RGP or GP) contact lens materials. GP contact lenses (primarily made from fluorosilicone acrylate, introduced in 1987) Soft lenses, made from gel-like plastic, first marketed in 1971. PMMA lenses were commonly prescribed years ago, but have essentially been replaced by gas permeable lenses. Nau AC. Special features. ClearKone® lens provides people with the all-day comfort of soft contact lenses and the excellent visual clarity of gas permeable lenses. We offer a wide range of contact lenses to suit most people. S. 67 ± 0. The new solution. Locate Us. Research shows GP lenses provide superior vision over their soft toric lens counterparts—including for patients with moderate to high astigmatism of 2. Gas permeable (GP) lenses are a good choice for fitting patients after refractive surgery. If the subjects adapted to GP contact lens wear, they were randomly assigned to wear GP contact lenses (n = 59) or soft contact lenses (n = 57) for three years. Table 2 shows the mean BOZR of the diagnostic lens. One study reports that GP lenses provide superior. The prescription powers on these lenses must be within the pupil’s range of adjustment in contacts, but contacts move in the eyes, which can put them off-center. 99; PureVision 2 For Astigmatism Contact Lenses – $53. Scleral lenses are larger in diameter than RGP lenses and do not touch the cornea; they vault over it. Most topographers give the sagittal depth of the patient’s cornea to a chord length of 10mm. The minus cylinder is the result of the difference between the refractive index of the contact lens (n = 1. Then I went into soft lenses, but the dry eyes bothered me a little, so I went into GP lenses. They offer excellent eye health: because they… Read. S. We've been serving eyecare professionals since 1981 with contact lenses that are powerful, intuitive and effective and by delivering unparalleled support to go along with them. GP lenses offer a number of advantages over soft lenses although many people in Northern Colorado do not prefer them over soft. Blink eyewear offers stylish frames for your multifocal lenses, as well as options for multifocal contact lenses and contact lens fittings. 12. Aspects of contact lens wear were compared for children remaining in their original treatment group. Gas Permeable Contact Lenses for Daily Wear. 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. Ideal for special eye needs, Paraperm O/2 Gas Permeable (GP) contact lenses are made specifically to meet the needs of your prescription and comfortably fit the natural shape of your eyes. was educated as to the likelihood that even a small mislocation off axis with a high-powered soft toric would lead to visual fluctuation and/or outright blurring, despite the advantages of better initial comfort compared to GP lenses. The optics of these lenses are separated vertically, similar to progressive spectacle lenses, rather than in a concentric design like other multifocal contact lenses. " "I decided to try out CRT [corneal refractive therapy]. 50 x 180, and Ks are 44. GP lenses are currently less popular than soft. Benefits of Gas-Permeable Contact Lenses. These lenses, called corneo-scleral lenses, generally are approximately 13 to 15 mm in. 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. Contact our team of specialty contact lens consultants to learn about. A back surface toric GP contact lens in situ induces a cylinder in the optical system (contact lens-fluid lens) designed to correct the ametropia. 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. GP lenses. Hybrid and scleral contact lenses are increasingly prescribed as a first-line treatment for keratoconus. The Nation's #1 Multifocal GP! The Renovation and Renovation E multifocal are developed with the needs of the mature presbyope in mind making it perfectly suited for patients with add powers of +2. 90 to 8. What is a Gas Permeable (GP) lens? GP contact lenses are made of a firm, durable plastic that transmits oxygen. Password. Improve Your Scleral Lens. 107 West Portal Ave San Francisco, CA. For more information. It launched in 2017. 1009. com (Do not send personal health information by email. Acuvue Oasys for Astigmatism 6 PK Contact Lenses – $34. Scleral lenses with 16. Lens Design. 1–3 They account for about 10% of fits worldwide (with considerable intercountry variation) and hold a steadily. Hard contact lenses are also known as gas permeable lenses and rigid gas permeable lenses. 00 -3. In most cases, hybrid. 8. Picciano S, Andrasko GJ. The optics of these lenses are separated vertically, similar to progressive spectacle lenses, rather than in a concentric design like other multifocal contact lenses. The company recently launched a new multipurpose solution for cleaning and disinfecting any GP contact lens – Tangible® Clean – that helps to protect coated lenses from wear. Another option is to use a small "suction cup" device sold in the contact lens care section of drug stores. Call Now! 623-933-2013 . 301-656-0775. Am J Optom & Physiol Opt 1987;64:313-320. In years following, PC Optical, Soderberg Contact Lens, Ideal Optics, Westcon and Hydrogel Vision (Extreme H2O) have joined X-Cel in representing the contact lens division of Walman. Read More. 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. Cost of Gas Permeable Lenses. Rinse lens and lens case thoroughly with saline or multipur-pose contact lens solution (no water). Abdalla YF, Elsahn AF, Hammersmith KM,. 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. Southwest – $103. Some premium brand lenses will cost £30. ESSential Multifocal GP lenses utilize an alignment fitting philosophy that ensures long-term corneal integrity and stable vision. In cases of corneal irregularity or severe sensitivity, scleral lenses are often the only viable option. TX serving the West Texas area. Lambert SR, Ward MA. Correction of Irregular Astigmatism With New-Generation Hybrid Contact Lenses. 0 Cart; Contacts America. Shadowscopes are often used for evaluating the contour and thickness of the edge of the contact lens. CALL 951-609-9099. Boston ADVANCE Conditioning Solution, from Bausch + Lomb, 3. In 2023, an eye exam in the. X-Cel Specialty Contacts understands the critical need for eye care professionals to have a choice when it comes to prescribing specialty GP lenses for the management of myopia for patients of all ages. It can take up to. Research shows that gas permeable lenses might be effective in slowing the progression or worsening of myopia or nearsightedness, particularly in children. GP lenses are made of durable plastic that allows more oxygen and moisture to reach your eyes. 44-1. When considering contacts for hard-to-fit eyes, such as eyes with irregular astigmatism and/or corneal scarring, most eye doctors recommend rigid gas permeable (RGP or GP) contact lenses. GP lenses have a smaller diameter than soft. If you want to set up an appointment, please feel free to call us at 201-267-2920. According to the Amsler–Krumeich classifications, we included 18 eyes in stage 1, 35 eyes in stage 2, and 28 eyes in stage 3. Hard contact lenses are also known as gas permeable lenses and rigid gas permeable lenses. 2174. , visit the Gas Permeable Lens Institute’s searchable online database: . Email Address. GP Lenses for Myopia Control and Ortho-K. 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. Harga Rigid Gas-Permeable Contact Lens sedikit lebih mahal. Key is in private practice in Houston and serves as clinical professor of ophthalmology at Baylor College of Medicine. GP lenses offer exceptional visual clarity and are highly effective in. GP contact lenses recommended by our San Francisco eye doctor are custom made for each patient based on the eye’s individual curvature, size, corneal shape. The G. 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. 2mm near-center design, while the aspheric lens design has a 3. Simply remove the lens, clean it off, and reapply properly. Wisconsin 1220 Miller Park Way, West Milwaukee, WI 53214 Contact Lenses in Shorewood,. in fact rigid gas-permeable contact lenses can be very beneficial for those with astigmatism. Enhanced comfort through edge lift control. Summary. Corneal staining was graded. Results. Hard ( PMMA) lenses, the original type of contact lens, now virtually obsolete. Hybrid contact lenses. GP lenses are increasingly relegated to patients with complex prescriptions or high vision demands, and specialty designs such as custom soft toric, hybrid and scleral lenses are now. 50 diopters. Rigid Gas Permeable Lenses. Philadelphia, PA. When placed on the human cornea, the OPTIMUM GP rigid gas permeable contact lenses act as a refracting medium to focus light rays upon the retina. Soft contact lenses are thin and flexible, so they mold easily to the shape of your eye. 58. Extended Wear Contact Lenses. Gas permeable contact lens care and handling educational video - learn about how to use gp contact lenses. Uniquely adaptable multifocal contact lens designs for outstanding all-round vision. Purpose : Contact lens surface dryness, deposit accumulation, and discomfort are crucial factors leading to patient dissatisfaction while wearing gas permeable (GP) contact lenses. The terms of the transaction were not disclosed. One example of myopia control contact lenses available in the U. Think hybrids and sclerals. This paper is a long-term extension of a case report originally published in 1988 describing the course of a post-RK patient fitted with ortho-K design GP lenses. We also carry the latest hybrid contact lenses and scleral lenses for difficult to fit corneas. 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. The BCVAs with spectacles and CL were 0. 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. We also proudly offer our in house multifocal design (High. . Advantages of Gas Permeable Lenses. Your contact will be uncomfortable and won’t provide clear vision. The only US solutions approved for lenses with Hydra-PEG are Tangible Clean, Boston Simplus. , Cook S. Hard contact lenses that are made of silicone-containing compounds which allow oxygen to pass through the lens material to the eye are Gas permeable (GP) contact lenses, or rigid gas permeable (RGP) lenses. The ESSential GP Multifocal family is a series of lenses that includes the ESSential GP multifocal and ESSential Xtra, with the option of adding a front-surface annular component called a concentric S-form add (CSA) enhancement to either design. Contacts For Hard-To-Fit Eyes. acrylate and silicone acrylate rigid gas permeable contact lenses. Soft bifocal contact lenses sometimes have the near power in the center (center-near). To access addresses, phone number, etc. CORAL SPRINGS, Fla. Coral Springs, FL 33065 800-852-8089. Health and Hygiene Benefits: Unlike soft lenses, GPs don’t contain water which makes them less likely to. MMA lenses are rigid contact lenses that look like GP lenses but are made of a plastic material that is not oxygen permeable. Sometimes, whether due to. Call : 281-304-5060. 3. 49 will be used here) and the index of the tear lens (n = 1. Looking for contact lens solution? Walmart Canada has you covered. With over 35 million lenses ready to go, we have what you need. 757-588-5423. GP contact lenses are also known as rigid gas permeables, or RGPs. 8:00 - 5pm. This increases comfort, health and safety during contact lens wear. But generally speaking, if you are short sighted and are prescribed a popular brand of disposable soft contact lenses, these lenses frequently are sold by a well known chain of opticians at a retail price of as little as £7. ” Getting oxygen to the eye reduces the risk of problems caused by hypoxia (reduced oxygen supply). The GP contact lenses were 9. Astigmatism, presbyopia, keratoconus and dry eyes needn’t be a barrier to contact lens wear but are possible with time and patience. 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. On this page: Soft Contact Lenses. 3% of keratoconus eyes and 100% of keratoconus suspect eyes achieved a VA of 0. 00mm diameters or less fit well into the Clear Care lens basket. 00D of with-the-rule astigmatism. 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. Contact Lenses for Keratoconus- Current Practice Open Ophthalmol J. Keep the Tear Film Intact and Stable Tear film stability and appropriate pre- and post-lens tear exchange characteristics are necessary for all contact lens wear, whether it is soft, gas permeable (GP) or specialty contact lenses. Eyeglasses & Contacts; Insurance; Located at Greenwell Springs & Magnolia Bridge in Central LA. Gas Permeable (GP) Contact Lenses. Scleral lenses are larger in diameter than RGP lenses and do not touch the cornea; they vault over it. GAS-PERMEABLE CONTACT LENSES The cornea, or front of the eye, requires a supply of oxygen from the atmosphere to remain healthy. Wash the tool with contact lens solution and moisten it with saline solution. Gas Permeable Contact Lenses (RGP Or GP Contacts) Gas permeable contact lenses are rigid lenses made of durable plastic that transmits oxygen. GP lenses. This attribute grants them several advantages over traditional soft contact lenses. Gas permeable lenses provide a better oxygen supply than most soft lenses because: The silicone-containing lens…In 2023, the average eye exam cost by region is: Midwest – $87. You can also opt to visit our clinic in West New York, New Jersey, for a walk-in consultation. Rigid contact lenses were made from this material from 1948 to 1980. The key information to record to adequately describe the fit of an GP was agreed as: the manufacturer, brand and lens parameters; settling time; comfort on a 5 point scale; centration; movement on blink on a ±2 scale; and the Primary Fluorescein Pattern in the central, mid-peripheral and edge regions of the lens averaged along the. Caroline and Andre identified that corneal GP lenses should be preferred to sclerals when the difference between the highest and lowest point along the meridian with the greatest difference is less than 350µm. Phone: (804) 451-5191 Email: [email protected] increases comfort and maintains eye health. ) After several trial lenses (8. W hat was once one of the more popular methods of mitigating contact lens–related discomfort is now often relegated to an afterthought. Their ability to transmit oxygen reduces eye problems such as dry eyes caused by reduced oxygen that are common in many brands of soft lenses or hard (non-GP) lenses. Jedlicka J, Denaeyer G. Gas Permeable (GP) Contact Lenses. 3mm distance zone and the remaining area, 1. Gardner, MA . West Springfield Office; Careers; Contact; PAY BILL ONLINE. In the United Kingdom, Pullum et al. Gas permeable (GP) contact lenses, also known as rigid gas permeable (RGP) lenses, are hard contact lenses made of silicone-containing compounds that allow oxygen to pass through the lens material to the eye. Because GP lenses are made with oxygen-permeable silicone, they allow more oxygen to reach the front surface of the eye than traditional hydrogel soft contact lenses. ComfortHold Dispenser: Bigger, etched tab is easier to grasp. Advantages of gas permeable. Call us today at (212) 235-1031 for an appointment! Gas Permeable (GP) Contact Lenses. Information about how to avoid problems such as fogging and poor wettability and how to optimize comfort is all over social media. Additionally, the practitioner has complete control over the lens parameters and the lenses can be made in high Dk materials. It was made from polymethyl methacrylate or PMMA (Lucite), a plastic developed for use in industry and by the military. The multifocal contact lenses used to correct presbyopia can also help slow progression. Centers for Disease Control and Prevention. An eye care specialist can help you decide which type is best for you. Scleral Lenses 101. Poor Near Acuity. Donate Now. Usage: Discard solution 90 days after opening. ICD GP Lenses. Eye Contact Lens. 1. Cost of Gas Permeable Lenses. About ABB; News; Careers;. 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. West – $125. They also have some limitations. Soft contacts are great at. )In the late 1970s, gas permeable contact lenses were first introduced. Bausch & Lomb Boston Advance Conditioning Solution, Conditioning Solution. Contacts can be either soft or gas permeable (GP). Gas Permeable Contact Lenses (RGP Or GP Contacts) Gas permeable contact lenses are rigid lenses made of durable plastic that transmits oxygen. West Springfield, MA . Over the last several years, scleral lenses have proven to be life-changing devices for countless patients who need the protection they afford the corneal and limbal surfaces or who need gas permeable (GP) optics but can’t tolerate GP lenses, according to Jason Jedlicka, OD, associate professor at the Indiana University School of Optometry. GP Contact Lenses; Contacts For Hard to Fit Patients; All Contact Lenses; Telehealth; REVITAL-EYES. Poor Near Acuity. Generally, they cost between $20 and $30 a box. These rigid lenses aren’t as popular or well-known as soft lenses, but they offer the advantages of durability, crisp vision and high oxygen permeability. 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. Gas permeable lenses are the most common hard-to-fit contact lenses because they work with a variety of eye conditions. Gas permeable contact lenses from BeSpoke Vision can help many patients achieve the clearest possible vision. By definition, scleral gas-permeable contact lenses measure 12. Gas Permeable (GP) Contact Lenses These rigid lenses aren’t as popular or well-known as soft lenses, but they offer the advantages of durability, crisp vision and high oxygen permeability. For those who want to enhance or change their eye color, we have many colored contact lens options from gently enhancing the color of your eye to changing the color of your eye. We also serve Gloucester Twp & Stratford. Now easier to use. 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 ® - Gas Permeable Contacts - LOWEST PRICE GUARANTEE on all Gas Permeable 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. Advantages of Gas Permeable Contact Lenses. These rigid lenses aren’t as popular or well-known as soft lenses, but they offer the advantages of durability, crisp vision and high oxygen permeability. Rigid gas-permeable (RGP) lenses, or gas-permeable (GP) lenses, are made of a hard, oxygen-permeable material that allows the eyes to breathe. - Cathy West. 5 percent of adolescents), 7. Shop contact lenses. Gas permeable (GP) contact lenses are used in the form of scleral and corneal lenses and for orthokeratology (ortho-k) for the correction of myopia, for other refractive disorders, and for the slowing of myopia progression. Their ability to transmit oxygen reduces eye problems. Call us today at (212) 235-1031 for an appointment! Gas Permeable (GP) Contact Lenses. 49 in most cases; 1. Make Appointment. Hybrid contact lenses are designed to offer the best of both worlds: aberration-correcting optics of a rigid GP lens and wearing comfort comparable to that of soft lenses. Summary. 2014 Feb;37(1):16-9. 13. Because of the strong material and the ability to diffuse oxygen, GP. Silicone hydrogel contact lenses are advanced contacts that may be healthier than regular soft lenses. Crafted from a patented oxygen-permeable material that allows your eyes to breathe, the low-maintenance contact lenses are. Aspects of contact lens wear were compared for children remaining in their original treatment group. The concentric stock zone parameter is typically configured in a 1. Randomised controlled trial of corneal vs. Abby ABB Contact Lens Catalog Soft, Custom Soft & Gas Permeable Contact Lenses; ABB Specialty Vision Products Custom Soft & Gas Permeable Lenses; ABB Single-Source Distribution. A large gas permeable contact lens, the G. 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. The pre-lens tear film consists of the outer lipid layer of the tear film and a portion of the aqueous and mucin mixture. Call Now! 225-424-1562. However, they. Skip to main content 18750 Willamette Drive, Suite C, West Linn, OR 97068Gas Permeable (GP) Contact Lenses. Standard Gas Permeable (GP) contact lenses and Scleral contact lenses are the treatment option of choice for keratoconus because they help contain the shape of the cornea to prevent further bulging of the cornea.