39 Three types of ICRS have been evaluated in the management of keratoconus. The arc-shortening effect flattens the central portion of the anterior corneal surface and steepens the peripheral area adjacent to the ring insertion site. The segments act as spacers between bundles of corneal lamellae, shortening the central arc length in a manner proportional to the thickness of the segment (Silvestrini TA, et al. 7,8 Implantation of ICRS can improve visual acuity and reduce refractive errors and mean keratometry (K) values. J Cataract Refract Surg 2010 36:102-109 Q 2010 ASCRS and ESCRS Intrastromal corneal ring segment (ICRS) implantation has been evaluated as an additive surgical procedure for corneal ectasia resulting from keratoconus 1-20 or pellucid marginal degeneration (PMD) 28-36 The procedure is an alternative in keratoconus cases, with the goal being to delay or prevent the need for corneal grafts. Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. CONCLUSION: Astigmatism correction in early to moderate ectatic corneas was more limited with the Intacs ICRS, which induced negative primary spherical aberration in the initial postoperative period. At 1 month, the mean primary spherical aberration was À0.17 mm G 0.52 (SD) in Group I and 0.40 G 0.35 mm in Group K the difference was statistically significant (P<.01). Both groups had significant corneal flattening (P%.02). 04) but not in Group I 41.18% of eyes in Group I and 52.94% in Group K gained 1 or more lines of corrected distance visual acuity. The uncorrected distance visual acuity increased significantly in Group K (P Z.

to bend rays inwards Pellucid standard lenses ranging at INR 2199 and Pellucid superior lenses at INR 2690 TrClear® lenses use the latest progressive no-line design technology to provide clear. At 6 months, there was a statistically significant reduction in manifest cylinder in Group K that was consistent with the significant reduction in corneal astigmatic aberration (both P Z. Seiko Synergy is an optimised progressive lens design using Seikos advanced power lens technology to deliver an unparalleled balanced view. One month postoperatively, there was a statistically significant reduction in sphere in both groups (P%.02). RESULTS: Group I had 17 eyes and Group K, 20 eyes. Visual, refractive, and corneal aberrometric outcomes were analyzed and compared between groups over a 6-month follow-up. METHODS: This retrospective analysis comprised consecutive eyes with grade I or grade II corneal ectasia (keratoconus, pellucid marginal degeneration, ectasia after laser in situ keratomileusis) that had Intacs (Group I) or KeraRings (Group K) ICRS implantation using femtosecond technology. We put every brand we work with at the center of what we do and provide a. SETTINGS: Vissum Corporation-Instituto Oftalmológico de Alicante, Alicante, Spain. Pellucid Technology is a 360-degree digital solutions agency, with a focus on design and strategy, based in Dubai.

The great majority of patients are able to wear their scleral lenses almost all of their waking hours without problems.PURPOSE: To evaluate and compare visual, refractive, and corneal aberrometric outcomes after implantation of 2 types of intrastromal corneal ring segments (ICRS) in eyes with early to moderate ectatic disease. These lenses are almost always very comfortable and the vision provided by them is outstanding. This liquid acts as a buffer and protects the compromised corneal tissue. The space between the back surface of the lens and the front surface of the cornea is filled with tears and saline solution. Pellucid Technologies Private Limited was registered at Registrar of Companies Delhi on 12 August, 2009 and is categorised as Company limited by Shares and.

Scleral lenses vault the entire cornea and are supported by the white portion of the eye (the sclera). Very often, scleral lenses are what works best on these types of corneas. Smaller lenses tend to be very unstable on a pellucid cornea and may move significantly on the cornea with each blink causing a great deal of irritation. Typically a larger gas permeable lens is necessary in order to achieve adequate vision and comfort.

Because so much of the cornea can be affected, fitting this type of cornea can be quite challenging. It is not unusual for 50% or more of the corneal surface to be involved. Pellucid corneas involve a larger distorted area than keratoconus. Pellucid Marginal Degeneration is a sub-category of keratoconus. Home / Conditions / Pellucid Marginal Degeneration

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