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Topic: Aphakia

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		The term monocular aphakia would apply to an individual who has had the lens removed from one eye, and who still retains the lens in the other eye, or to an individual who has only one eye which is aphakic.
		In cases of binocular aphakia, the central efficiency of the better eye will be accepted as 75 percent of its value.
		In cases of monocular aphakia, where the better eye is aphakic, the central visual efficiency will be accepted as 50 percent of the value.
	home.att.net /~c-d.venable/lisiting_2.htm (1707 words)

	[No title]
		The veteran's service-connected right eye disorder is symptomatic, including pain and visual disturbances, and is manifested by aphakia or an absent lens and visual acuity of 20/400 corrected to 20/30; but enucleation or a serious cosmetic defect is not present, and his visual acuity on the left is 20/20.
		It was also noted that the veteran stated that he had pain in his left eye comparable with that in the right, and that his right eye aphakia and inability to wear a contact lens caused him to have an image disparity between the two eyes which caused some visual disturbance.
		Bilateral or unilateral aphakia warrants a 30 percent rating, which is a minimum rating to be applied to the unilateral or bilateral condition and is not to be combined with any other rating for impaired vision.
	www.va.gov /vetapp/files2/9411713.txt (3546 words)

	FAA - OAM Technical Reports
		This study analyzes the distribution of aphakia in the civil airman populatoin by type (unilateral, bilateral), class of airman medical certificate, and gender for a 4-year period (1982-85).
		The percentage increase in the prevalence of aphakia was higher for bilateral, second-class certificate holders, and male aphakics.
		The incidence of total and unilateral aphakia declined during the last 2 years of the study period.
	www.faa.gov /library/reports/medical/oamtechreports/1990s/1991/9114/index.cfm (171 words)

	eMedicine - Pupillary Block, Aphakic : Article Excerpt by: Deborah Eezzuduemhoi, MD (Site not responding. Last check: 2007-10-22)
		Background: Aphakia, the absence of the crystalline lens, may occur as a result of trauma, lens subluxation, or dislocation and surgical management of visually significant cataract.
		Aphakia was especially common during the era of intracapsular cataract extraction.
		According to one study, 11% cases of silicone oil injection in aphakic patients resulted in angle closure and high intraocular pressure (IOP) due to obstruction and tamponade of the trabecular meshwork.
	www.emedicine.com /oph/byname/pupillary-block-aphakic.htm (609 words)

	Review of Ophthalmology Online
		They aimed to determine the incidence of aphakia after cataract extraction and to evaluate the relative risk for this outcome in subgroups of patients based on pre-operative conditions; they also studied the incidence of aphakia after cataract surgery, the surgical complications that can lead to it and the visual outcome of aphakia after cataract surgery.
		In 87.1 percent of cases, the aphakia was not planned--an incidence of 0.48 percent.
		Unplanned aphakia was significantly related to poor pre-operative vision, old age and the presence of ocular comorbidity.
	www.revophth.com /archive/newsletter/ro_102504.htm (2336 words)

	Medical Dictionary: Aphakia - WrongDiagnosis.com - WrongDiagnosis.com
		Aphakia: Absence of the lens of the eye - often due to cataract treatment.
		Aphakia: Absence of crystalline lens totally or partially from field of vision, from any cause except after cataract extraction.
		Aphakia is mainly congenital or as result of LENS DISLOCATION AND SUBLUXATION.
	www.wrongdiagnosis.com /medical/aphakia_printer.htm (226 words)

	[No title]
		In my experience, managing unilateral aphakia with a contact lens in children between 1 and 4 years of age is an arduous and nearly impossible task.
		Given the age of the child and the postoperative condition of the affected eye, a tenacious antiamblyopic treatment should be instituted as soon as possible.
		This 15-month-old with traumatic aphakia secondary to trauma presents a very difficult situation that requires open communication with the family to discuss the pros and cons of the available options.
	www.ascrs.org /publications/jcrs/ccsmay7.html (4072 words)

	history of the Artisan/Artiflex IOL
		It was first developed for the correction of aphakia.
		In 1986, the concept was modified for use in the phakic eye.
		aphakia Lenses are increasingly used as the back-up lens of choice by many cataract surgeons.
	www.ophtec.com /eng/refrChr/artiflex/historyfx.htm (186 words)

	eMedicine - Pupillary Block, Aphakic : Article by Deborah Eezzuduemhoi, MD (Site not responding. Last check: 2007-10-22)
		A very shallow or flat anterior chamber in aphakia also is seen in choroidal separation (choroidal detachment).
		Peripheral iridectomy should be considered and performed not only in complicated pediatric cataract extraction cases but also in routine pediatric cataract extraction cases, because vitreous remnants are commonly seen postoperatively in the anterior chamber despite an anterior vitrectomy.
		Tomey KF, Traverso CE: The glaucomas in aphakia and pseudophakia.
	www.emedicine.com /oph/topic624.htm (3990 words)

	Vision in childhood aphakia Shrivastva S, Vajpayee RB, Sharma YR - Indian J Ophthalmol (Site not responding. Last check: 2007-10-22)
		Routine ophthalmic checkup should be done by a paediatrician or by vaccinators for early detection of cataracts and for early appropriate referral.
		Inspite of the many advances in surgical management of cataracts the optical correction of aphakia especially, in children still remains a formidable challenge and is often a frustrating experience for the ophthalmologist.
		Many of the routinely employed methods for optical correction of aphakia are suitable for aphakic children even for uniocular aphakic patients but still the significant number of patients of childhood aphakia seen after a variable period of time after surgery show poor vision
	www.ijo.in /article.asp?issn=0301-4738;year=1988;volume=36;issue=3;spage=123;epage=125;aulast=Shrivastva (1089 words)

	Feature Review - Management of Pediatric Aphakia with Silsoft Contact Lenses
		The paper published by Murali Krishnamachary Aasuri et al in the October 1999 issue of the CLAO journal investigates the performance of silicone elastomer lenses in pediatric eyes with aphakia.
		This study is a retrospective analysis of 74 children (106 eyes) fitted with Silsoft lenses (elastofilcon A, Bausch and Lomb) at the L.V. Prasad Eye Institute in India.
		Patching and operating at an earlier age were found to improve visual outcomes, particularly for the children with monocular aphakia.
	www.siliconehydrogels.org /featured_review/featured_review_mar_04.asp (854 words)

	Deletion in the promoter region and altered expression of Pitx3 homeobox gene in aphakia mice -- Semina et al. 9 (11): ...
		Mouse aphakia (ak) is a recessive phenotype that spontaneously
		aphakia mouse is due to the deletion upstream of the Pitx3 gene.
		4 Varnum, D.S. and Stevens, L.C. (1968) Aphakia, a new mutation in the mouse.
	hmg.oxfordjournals.org /cgi/content/full/9/11/1575 (7089 words)

	Glossary of Eye Conditions - American Foundation for the Blind (Site not responding. Last check: 2007-10-22)
		Aphakia is usually associated with the surgical removal of a cataract but may also result from a wound or other cause.
		Contact lenses or eyeglasses are used to correct the vision of someone with aphakia.
		A person with aphakia will benefit from good, but not excessive, lighting and high-contrast reading materials.
	www.afb.org /Section.asp?DocumentID=2139 (4604 words)

	Doctors seek optimal treatment for infants born with cataract in one eye - Findings at Baylor College of Medicine, ...
		The Infant Aphakia Treatment Study, conducted by BCM's department of pediatric ophthalmology and Texas Children's Hospital, is designed to determine which treatment for aphakia is better for infants between the ages of four weeks to seven months who are born with a cataract in one eye.
		Absence of the lens of the eye is known as aphakia, and it is usually associated with the surgical removal of a cataract.
		Contact lenses or glasses are used to correct the vision of someone with aphakia, or an artificial lens is inserted to replace the lens that is removed.
	www.bcm.edu /findings/vol4/is5/06may_n2.html (432 words)

	Contact Lens Spectrum
		Aphakic spectacles, contact lenses, intraocular lens implants and epikeratophakia are all options for optically correcting pediatric aphakia.
		Up to 25 percent magnification occurs with the high plus powers required in aphakic spectacles, and patients with unilateral aphakia can suffer diplopia or suppress the image from the aphakic eye.
		Several doctors have included statements suggesting that it may be safer to avoid risks of extended wear lenses for all pediatric aphakia patients, but the evidence has substantiated this for hydrogel lenses only.
	www.clspectrum.com /article.aspx?article=11905 (1562 words)

	Pediatric Ophthalmology
		Spectacles are not possible in the case of unilateral aphakia because of the image size difference (aniseikonia) induced.
		It is necessary to monitor the fit and make changes as the eye grows to insure health and optimum development of the visual pathway.
		The use of contact lenses in pediatric aphakia is a true medical necessity.
	www.uihealthcare.com /topics/eyesandvision/pediatricaphakia.html (643 words)

	EVER
		Aim of the work is a functional analysis of the mouse mutant aphakia, which is characterized by missing eye lenses caused by 2 deletions in the Pitx3 promoter.
		Expression profiles from aphakia and wild-type embryos during lens development (embryonic stages E 9.5 till E 13.5) were compared using the DNA Microarray Technology.
		23 genes showed significant differences in their expression patterns between aphakia and wild type, from which 15 are upregulated in the mutant.
	www.ever.be /view_abstract.php?abs_id=603 (300 words)

	ISLRR - Vision 2002 - Abstracts (Site not responding. Last check: 2007-10-22)
		Results: The mean VA was 0,01 (ranging from counting fingers to 0,03) in uncorrected aphakia group; 0,03 (rang 0,01 to 0,09) in contact lens corrected group; 0,04 (range 0,01 to 0,09) in IOL corrected group.
		SCS increased, TSR became shorter and PVF became wider in the presence of aphakia correction in all cases.
		Summation and increasing in SCS in low frequency in both eyes vision in the presence of correction was revealed in 5 cases, Results obtained testified about PVF summation in both eyes vision in all cases.
	www.islrr.org /Vision02/551.html (295 words)

	Review of Ophthalmology Online
		The effects of the location of the causative retinal breaks, intraoperative posterior capsule rupture, and postoperative posterior capsulotomy on the incidence of retinal detachments were evaluated.
		Results showed that final visual acuity was better than or equal to 20/20 in 128 eyes (97.0 percent) of the IOL group and in 29 eyes (78.4 percent) of the aphakia group.
		Two of three eyes (66.7 percent) in the IOL group and one of eight eyes (16.7 percent) in the aphakia group that later developed a retinal detachment had an intraoperative posterior capsule rupture.
	www.revophth.com /archive/newsletter/ro_091905.htm (2536 words)

	All India Ophthalmological Society - India's Biggest Ophthalmic Organisation
		Many surgeons have been reluctant to perform secondary IOL surgery because of the inherent danger involved in any intraocular surgery and also it has been well documented that there is strong possibility of decreasing the best corrected visual acuity in an aphakic eye and thus place potentially good vision at risk.
		This study is not enough to establish its long term safety and efficacy to predict the same in children, who have to live long.
		Hann et all- Secondary intraocular lens implantation in aphakia.
	www.aios.org /proceed.cfm?pid=68&show=y (864 words)

	Simulation of spectacle corrected aphakia » Clinical and Experimental Optometry
		A proportion of optometric patients seek advice on the state and progress of lenticular opacities, the advisability and timing of cataract surgery and the forms of optical correction available for aphakia.
		To enable optometrists to better understand this condition and to advise patients appropriately, a simulation model for spectacle-corrected aphakia was devised.
		This consists of a high minus contact lens worn in conjunction with compensating plus spectacle lenses.
	www.optometrists.asn.au /ceo/backissues/vol66/no3/1881 (78 words)

	Contact Lens Spectrum
		In a study of 96 children presenting with a primary diagnosis of cataracts, researchers found the the following factors responsible for the lens opacities: intrauterine infection (36 percent), unknown causes (31 percent), heredity (23 percent) and various syndromes and metabolic disorders (10 percent).
		Improved surgical techniques, safer anesthesia and improved post-surgical optical correction have greatly increased the visual prognosis in congenital aphakia.
		But because of the rapid growth of the eye before the age of two, IOLs are rarely used to manage infantile aphakia, and spectacle lenses present some unique challenges secondary to the high plus correc tion and the child's underdeveloped nose and bridge.
	www.clspectrum.com /article.aspx?article=12417 (392 words)

	Visual Results after Primary Intraocular Lens Implantation or Contact Lens Correction for Aphakia in the First Year of ...
		Esotropia or exotropia of more than 8 prism diopters were present in 55% of children (10/18) in the IOL group compared with 83% of children (19/23) in the CL group (p = 0.039).
		Conclusions: We suggest that correction of aphakia after unilateral congenital cataract surgery with primary IOL implantation results in improved visual acuity, improved binocular vision outcome and less occurrence of strabismus, but a higher rate of complications requiring reoperation.
		Further studies with a larger pediatric patient group are necessary to confirm the optimal treatment of aphakia after unilateral congenital cataract extraction.
	content.karger.com /ProdukteDB/produkte.asp?Aktion=ShowAbstract&ProduktNr=224269&Ausgabe=230688&ArtikelNr=83264 (460 words)

	JRS: Excimer Laser Photorefractive Keratectomy For Hyperopia and Aphakia
		To study the safety, efficacy, predictability, and stability of photorefractive keratectomy (PRK) for hyperopia and aphakia.
		PRK is a relatively safe, stable, and effective procedure with reasonably good predictability for eyes with less than +5.00 D of baseline hyperopia, and poor predictability for eyes with more than +5.00 D of baseline hyperopia.
		PRK is ineffective in the correction of aphakia.
	www.slackinc.com /EYE/jrs/vol136/sener.htm (350 words)

	Lens & Cataract-Aphakia
		Soemmering's ring formation as a result of anterior capsule edges attachment to the posterior capsule in the absence of intraocular lens implantation or if lens was not removed in an intracapsular fashion
		In the case above, aphakia resulted from extracapsular congenital cataract extraction without intraocular lens implantation.
		All material published on this website is the property of Digital Reference of Ophthalmology and cannot be duplicated without permission.
	dro.hs.columbia.edu /aphakia.htm (75 words)

	JRS: Traumatic Aphakia Treated with an Iris Prosthesis/Intraocular Lens or Epikeratophakia
		We retrospectively analyzed the visual results and postoperative complications associated with severely traumatized eyes in which aphakia was corrected with epikeratophakia or a sutured iris prosthesis/intraocular lens (IOL).
		Fourteen eyes (14 patients) with traumatic aphakia and severe anterior segment complications were corrected either with epikeratophakia or a sutured iris prosthesis/IOL.
		The surgical correction of aphakia in severely traumatized eyes requires specialized surgical techniques.
	www.slackinc.com /EYE/jrs/vol134/uusilo.htm (335 words)

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