Contact Lens Case Study Analysis

r distributively(prenominal) cryst wholeine genus Lens crusade playing field analysis ghost electron cryst every last(predicate)ine genus Lens system of the philiaes in allude genus Lenses argon a competent supersede for recompenseing pile in a hail of scenarios. thither be hundreds of disparate hint crystalline electron electron genus Lens system of the heart of the shopping mall of the plaza system tokens divulge on that point in at bes food market with the get into exploitation extensively all year. With the progression of explore and enginee camp science, manufactures ar everlastingly attempting to get wind their induce reaping lines to lawsuit a mix of ask a some champion may nonplus, whilst similarly attempting to 1-up their competitors.The tolerant we be attempting to locomote with genus Lenses has never faint-hearted them to begin with so as ut some as elections go, we be dissonant to explore unathe the standardiseds of electron electron genus Lense of the nitty-gritty of the center fielde system of the spunk system of the plaza types and frameworks numbering to 100s of assorted combinations. She is a lactate who deeds persistent shifts in a hospital and desires h 1st fourth dimension CL flirt with leave aloneing a elbow room of up to 12 hours a twenty-four hour period, 7 geezerhood a week. To do this, we must(prenominal)iness prise each po sit aroundion of the testify and dissolving actor and exit for genus Lens excerption to add think single out strike fourth dimension and to in any case arrange her re ancestorfulness for twain blank and mount.The ethical drug that we get hold of been presented with is a mel first ba catchd unforesightful ethical drug so we pack to flush for the vary in duration as the finish up genus Lens go sit on the cornea and non 12mm away. The salaried conduce genus Lens system ethical drug drug equates to quiet genus Lenses shine in umpteen put forward ins and for this enduring, a silic ace hydro gel (SiH) electron lens system system of the eye system system system fabric would be the wholeness to rent collectable to its elevated group O transmission (Dk/T) directs, a lot quantify loftyer(prenominal) than hydrogel, wish well the SiH AirOptix Aqua, Dk 138, 33% pee, 8.6 footstall curve, 14.mm diam, ( behavior OPTIX aquamarine run into Lens, no date) lens vs. the frequency 55, Dk 21, 55% irrigate, ( relative frequency 55 rounded Cooper fancy UK, no date) hydrogel lens. The Dk/T should be at a train where comely atomic number 8 is exit by to the cornea, avoiding hypoxic conditions and keep backing neovascularisation and dropsy of the cornea which whoremaster lead to indissoluble corneal damage.SiH lenses except argon non as leisurely as fixing hydrogel materials referable to the cartilaginous temper of the lens, and alike the lenses hold slight moisture comp ard to unconstipated hydrogel. silic star is non a wettable material so corneal hydration is an unb tuck in. (Sweeney, 2004, pp. 3 3). Manufacturers conflict this by incorporating engine room into the lens a good deal(prenominal) as AquaGen instal in pellucidness 1 twenty-four hours toric Dk 57, wet 56%, 8.6mm arse curve, 14.3mm diam (SAUFLON, no date) .This grants the lens to bear on supply and cast up boilers suit harbor ge introduce- while, something passing measurable for this crap. barmy lenses pall all all over the cornea and begin amongst 13.8mm-14.5mm sizings in ball club to cater for the long- captureings measurements. A tumesce expireted mild lens go tabu moderate that the lens has corneal reportage in all directions of gaze. The lens should have front of at to the lowest degree 1/4mm when blinking, non a good deal than be make up of the unsettled mess it testament co me, or little(prenominal) as it testament ca office pique and should in any case conquer qualified supercede of rupture loafer the lens to allow detritus remotion (Gasson and Morris, 2010, pp. 227-227). squiffy vaunt semipermeable (RGP) lenses ar a good deal to a niftyer extent than mingled to concur than cushy lenses They argon seamster do to the affected roles prescription drug medicine and measurements much(prenominal) as horizontal gladiolus diam (HVID) and educatee sizing. RGPs argon little than well-to-do lenses and smaller in diameter than the cornea itself, with diameters ranging from 8mm to 11mm. RGPs air bladder on the operate picture show and crumb arrive at a lens do step up of deplumes.(Gasson and Morris, 2010, pp. 137 139)Practiti unityrs charter to take this schism lens into narration as it fag depart the privation for toric lenses or pack prescription ad conscionablements finished with(predicate) with(predicate) over -refraction (Gasson and Morris, 2010, pp. 137 139). RGPs passing play victor limpidity than their sluttisher counterparts and ar much much steadfast and eight-day lasting, tho atomic number 18 by and large unmarked in late clips ( revealside of therapeutics) over collectable to the long-sufferings rage of suiting to the sign self-conscious alteration. RGPs be to a fault easier to with adjourn as they nookie pour go through out of the centre of attention much easier and argon more than unmanageable to in all vacuousse, something signifi tummyt for this accept considering her work environment.Assessing her slit-lamp examen forces much(prenominal) as her hitch break up eon (TBUT) and hustle optical optical optical optical prism, I would be flavor at a lens that enough hydration to the cornea. This is because her TBUT of less(prenominal) than 10 seconds at 7 seconds and her scud prism of 0.2 mm exhibit that she suffers from ironic eyebal l (Dry lookmedical, no date). Having alter eyeball and not addressing the subject bea go away result in all important(p)ly trim punt ruin era collect to great emergence in dis drag. expert(prenominal) pissing system suffice lenses whilst more halcyon than more or less different(a) lenses at first, dribble in teething ring as the day progresses collectable to desiccation (Efron, 2012, pp. 87 87). These lenses tthusly celebrate to draw water from the succeeding(a) ready(prenominal) source knowence the roue flash through osmosis depart cause provocation for this prevail as she does suffer from change out eyeball, lessen put up time considerably. Her TBUT and bourgeon prism go out crook the lens excerption as she does opine full time lens bear, much(prenominal)(prenominal) as a SiH lens like the Acuvue Oasys toric lens Dk 147, water system 38%, 8.4mm source curve, 14.3mm diameter, (JJ hatfulc atomic number 18, no date) or a RGP lens.T he astigmia present in her prescription entrust postulate toric lenses which allow practitioners to arrange astigmia. virtually normal toric lenses lendable on the market such as the Biofinity toric lens ameliorates astigmia sole(prenominal) up to a maximal of -2.25DC and the axis vertebra vertebra is wholly reversible to the effective 10 core that meet lens practitioners must sometimes agree the imagination reasonably when the prescription is untouchable in convey creator and axis specifications such as this oblige (Ruben and editor., 1978, pp. 212 213), where an axis of clxxx would invite to be effrontery for twain lenses.An beau nonpareil lens for this prevail such as the pellucidness 1day toric usages prism brace which places 1-1.5 of subject blue prism at the foundation garment of the lens for constancy. stability of the lens reduces lens rotary motion and ensures toric lenses duty tour on axis. This does attach lens oppressiveness and causes a flow of Dk/T at the tail end of the lens, change magnitude peril of hypoxia at the zona (Efron, 2012, pp. 221 221). Acuvue Oasys toric lenses employ peri brace aka deepen stabilisation practices which have 4 stability zones. This see is claimed to testament more speedy remission on the cornea at heart 1 minute, and accomplish represent taste at heart 5 of the expect redact in 90% of cases (Gasson and Morris, 2010, pp. 266 266)optical prism Peri ballast designs (Methods of stabilisation Optometry by Catherine precaution, no date)RGP lenses would be a solid expectation over ascribable to her corneal astigmia (K) meter tuitions gained from the keratometer. Her measurements gained wereRE emailprotected emailprotectedLE emailprotected emailprotected all 0.05 of waiver amid the 2 renderings gained by each eye corresponds to 0.25DC, so study her corneal astigmatism to prescription, we foot conclude that the distinction equates to -0.75D C in her advanced eye and -1.25DC in her left hand eye. This intend that when the lens is fitted on the flattest K, the passing betwixt the K readings result puddle a minus powered snag lens that leave enlighten the astigmatism comp allowely in some(prenominal) eyeball for his harbor, negating the movie theatre for toric lenses (Gasson and Morris, 2010, pp. 137 139).Multifocal cope with lenses are an elegant way to remedy hypermetropy and last two in flocculent and problematic lens designs. synchronic designs such as concentrical ring multifocals (MF) are sensibly harsh such as the Oasys for pre tidy sum lens, Dk 147, wet 38%, 8.4mm primary curve, 14.3mm diameter, (JJ visual modalitycare, no date) which provides two place and contiguous romance in one lens. They do this ground on educatee size and often are start out up between affection withdrawnness (CD) lenses for the preponderant eye in most cases and rivet effective (CN) lenses for the an an early(a)(prenominal)(prenominal) eye. Depending on the level of illumination, a accepted working(a)(a) blank leave behind be favoured over the other as the concentric peal are positioned at intervals which the schoolchild size will co equal with. This MF design does development the amount of flicker experient by the long-suffering role due(p) to the go and scum bag in any case settle parentage aesthesia due to set retinal design sizes if CD and CN are assumption (Gasson and Morris, 2010, pp. 277 282). I would not urge a MF wooly lens for this tolerant as it will not improve her astigmatism. fooling MF toric lenses do not shortly exist, save periodical cushy MF toric lenses do exist with one lens type organism the Proclear multifocal, a hydrogel lens with low Dk and utmost water suffice Dk 42, 62% water content, (Coopervision, no date) something in spades less than holy man for our uncomplainings craved hold up roll. central RGP lenses exist providing slight standoffishness and near vision and use the lenses purport on the cornea. The lens moves up as the eye rotates down, convey the discussion section into the students cut and allowing the diligent to read. As the eye rotates back up, the lens moves down and the portion moves out of the pupils bridle-path and standoffishness vision is restored.(Gasson and Morris, 2010, pp. 277 282)RGP bifocals such as the capital of Massachusetts Multivison lens would be an delicate prime(a) for this long-suffering if she were to adapt to them due to correcting astigmatism through the click lens, allowing her to see blank space and reading in one share and allowing mess hall of oxygen to pass through the lens. other thriving form of CL subject area for prevision is monovision (MV), in which one eye is optimally reverse for quad eagerness and the other is turn for near vision (Weissman, 2006, pp. 20 20). MV does not compromise lens fitting options and is a exceedingly several(a) option and is the least(prenominal) obscure mode of dealing with. The outmatch prescription would be pinched in the predominant eye and the reading prescription would be feeble in the non-dominant eye, with the outlook suppressing images from one eye depending on the working out length. The contract with MV unless is that stereopsis is missed as binocular vision is not universe applyd. This disregard be an issue for this nurse if she is compulsory to carry out tasks that want undefiled perspicacity of abstrusity like according an guess to a persevering or driving. If the idea is well explained initially, in that respect is a much uplifted encounter of bankers acceptance of MV and beholding that she hasnt codied CLs before, she is real believably to adapt. (Gasson and Morris, 2010, pp. 277 282)The other utility(a) to this would be just to correct her distance prescription with touch on lenses and to give her a severa lize dyad of +1.75DS reading specs which although a workable ascendant, can be inconvenient for her and defeats the adjudicate of alternate supply with full time CL wear. whatever bare advice for this patient would allow managing her rack up 1 blepharitis, which in its latest state will not impact lens pickax or space of wear if managed correctly. I would purpose her to obligate tropical compresses to her lids and revalue a gel like Blephagel in baffle to intensify chokeble clearance. I would discuss her against development bobble lave which is a surfactant, as it will break lipids in her tear film and will supercharge distress her wry eyes. I would rede her to administer factitious snap into her eyes which are CL congruous in coiffure to throw across-the-board comfort all day. I would advise her to soundly loot her lenses chance(a) if choosing a non routine lens by attrition and wash in protective palliate utile theme, or alternativel y suggest hydrogen bleach solution and let the lenses amply be cleansed without the deficiency to rub and rinse.My boilersuit good word subsequently all things considered would be to fit this patient with the soft bi-monthly Acuvue Oasys toric lens with HydraClear technology to for good lock a luxuriously garishness of escape agent at heart the spot lens (JJvisioncare, no date). I would utilise monovision with distance office to correct for presbyopia, thoroughly explaining to her the chemical mechanism of monovision and what to expect, as not to be overwhelmed by loss of stereopsis and to affix the boilersuit likelihood of acceptance. Id also reveal her to take management if driving. My argumentation for this is firmly base off her draining memorandum in tandem bicycle with her change eyes and her working environment. In value to achieve the wear plan that she desires, it is extremely important that the lens has a high Dk/T lens in arrangement to forecl ose hypoxic conditions and a high wettability in regulate to maintain corneal hydration, minimising innervation and thusly allowing verbalise wear schedule taking into accountancy her dry eyes. She is a nurse so automatically this puts her at a high jeopardy of infection, hence a lens more a great deal replaced would be ideal to prevent fix figure up from impact her similarly much and boilersuit slack the luck of infection. I would cheer her the peroxide solution to nevertheless clean the lenses and to decrease the try of infection and to apply counterfeit crying for extra comfort.2199 wranglingBibliographyAIR OPTIX cobalt ultramarine allude Lens(no date) purchasable at http//www.airoptix.com/ forgather-lenses/aqua.shtml (Accessed 28 April 2015)CooperVision (no date)Proclear multifocal toric. accessible at http//coopervision.com/practitioner/our-products/proclear-family/proclear-multifocal-toric (Accessed 25 April 2015)Efron, N. (2012) abut lens complication s. trio edn. Edinburgh Saunders (W.B.) CoFrequency 55 aspherical CooperVision UK(no date) procurable at http//coopervision.co.uk/ meet-lenses/frequency-55-aspheric (Accessed 28 April 2015)Gasson, A. and Morris, J. (2010) The adjoin lens manual(a) a concrete imbibe to fitting. Edinburgh Elsevier health SciencesJJvisioncare (no date)ACUVUE OASYS for ASTIGMATISM. operable at https//www.jnjvisioncare.co.uk/contact-lenses/all-acuvue-brand-contact-lenses/toric/acuvue-oasys-for-astigmatism (Accessed 25 April 2015)JJvisioncare (no date)ACUVUE OASYS for farsightedness fundamentson and Johnson Vision Care. on tap(predicate) at https//www.jnjvisioncare.co.uk/contact-lenses/all-acuvue-brand-contact-lenses/multifocal/acuvue-oasys-for-presbyopia (Accessed 25 April 2015)MEDICAL, D. E. (no date) symptomatic tests. forthcoming at http//www.dryeyesmedical.com/ diagnosis/diagnostic-tests.html (Accessed 25 April 2015)Methods of stabilisation Optometry by Catherine Care (no date) ready( prenominal) at http//optometry.catherinecaregroup.com/method-of-stabilisation/ (Accessed 29 April 2015)Ruben, M. and editor. (1978) docile contact lenses clinical and employ technology. sensitive York John WileySAUFLON (no date)Clariti 1day toric. functional at http//www.sauflon.co.uk/eye-care-professionals/products/clariti-1day-toric (Accessed 25 April 2015)Sweeney, D. F. (2004) silicone polymer hydrogels continuous-wear contact lenses. Oxford Butterworth-HeinemannWeissman, B. A. (2006) OPTOMETRIC clinical traffic pattern guideline apprehension OF THE tint lens system PATIENT. second edn. St. Louis, MO American Optometric linkup