Nitro lacquer cracks retina

Each issue provides insight from wellrespected specialists on cuttingedge therapies and surgical techniques that are. Fixing crack in the lacquer the steel guitar forum. Full text lacquer cracks observed in peripheral fundus. Then i sanded down heavily broke through in a few places, resprayed 1 coat of gloss topcoat. I usually dont recommend trying to fix such checks, because they are often an inevitable part of the nitrocellulose lacquer aging process. A 37yearold patient with bilateral high myopia who visited our clinic was examined by fluorescein angiography fa and. However, lacquer cracks are a classical symptom of myopic degeneration and while your condition may remain stable for many years, the odds are more in favor of problems as you age.

All my lacquer is supplied in 400ml aerosols, which have adjustable elliptical nozzles allowing a. Jones, md, phd, retina center, minneapolis, mn, uploaded on oct, 2012. Ophthalmology grand rounds matthew gorski, md suny downstate medical center. Pdf lacquer cracks observed in peripheral fundus of eyes. Clean off the area and then either french polish or use a padding lacquer. Lacquer cracks predispose patients with high myopia to have sudden visual loss as macular cnv may develop in close proximity to the lacquer cracks.

Combined photodynamic therapy and intravitreal triamcinolone acetonide for the treatment of myopic subfoveal choroidal. Anyone servicing the wood finishing market should be able to get nc lacquer, the challenge maybe the quantities. This is the left eye of a 40yearold woman with visual acuity of 2070. Lacquer crack lesions in pathologic myopia sciencedirect. At the end of the day lacquer to me is the easiest to apply and touchup, and it feels the best under my hands, thats why i use it. Looking for sources of nitro cellulose lacquer paint. They are typically less than 1 disc diameter in size and are located between the neurosensory retina and the rpe. Retina today is a publication that delivers the latest research and clinical developments from areas such as medical retina, retinal surgery, vitreous, diabetes, retinal imaging, posterior segment oncology and ocular trauma. Peripheral lacquer cracks as an early finding in pathological. Of these 37 eyes, the number of lacquer cracks increased in 14 eyes and turned into other myopic fundus changes in 25 eyes. Lacquer cracks observed in peripheral fundus of eyes with high myopia mitsuki suga, kosei shinohara, kyoko ohnomatsui department of ophthalmology and visual science, tokyo medical and dental university, tokyo, japan abstract. The detection rate of lcs was 98% in fundus photographs and 85% by fundus autofluorescence and optical coherence tomography.

A project from the american society of retina specialists. Jun 01, 2007 when the lacquer cracks are large, choroidal vessels may traverse the lesion posteriorly. But again, i would not use nitro for table top either. You should wear a properly fitted vapour respirator during the application and drying of nitrocellulose lacquer. The american society of retina specialists presented kirk h. Aug 04, 2018 the only one ive ever done in black nitro lacquer.

Im with frank on this one my initial attempts at nitro spraying many years ago resulted in longitudinal cracks throughout the lacquer on swamp ash mainly and this was definitely a result of too much lacquer, too soon with too little thinner. Full text lacquer cracks observed in peripheral fundus of eyes with. The only thing you need to strip nitro is lacquer thinner wipe it on then wipe off the finish. Depending on the manufacturing process, nitrocellulose is esterified to varying degrees. It is a significant finding as you are at risk of getting cnvm choroidal neovascular membranes, which means new blood vessels will start forming. The presence of linear hyperfluorescence on the fundus fluorescein angiography ffa was used as the standard for diagnosing the presence of lcs. Nitro is soft, will always feel sticky in a hot environment, it cracks from temperature shock, it turns yellow, and it just doesnt hold up as well. Recently, the doctor has found lacquer cracks in my eyes. Marticorena j, gomezulla f, fernandez m, pazos b, rodriguez cid mj, sanchezsalorio m. The hemorrhages may occur in younger age groups, tend to be deep in the retina and, because of their characteristic appearance, are sometimes referred to as coin lesions. This report describes comparable lesions in the retinopathy, globe enlarged rge chick. Longterm visual outcome of choroidal neovascularization in. Lacquer crack means that there is break in bruchs membrane it is a significant finding as you are at risk of getting cnvm choroidal neovascular membranes, which means new blood vessels will start forming.

One longstanding claim in particular is that the finish affects the tone, with nitro finishes being at the top of the tone heap and poly finishes at the bottom because of their supposed blanketing effect. Dan teaches you how to blend new lacquer with old lacquer using a flash coat for a nice near. Of note, 3 eyes demonstrated a single lacquer crack without associated perforating vessels, while lacquer cracks with and without perforating vessels were found in the same eye in 5 cases. Mathematical and physical papers, by sir william thomson. Lacquer yielding trees in thailand, vietnam, burma and taiwan, called thitsi, are slightly different. Choose a lacquer repair kit which contains the substances that you can use to fill the cracks in the lacquer. Lacquer cracks can develop at a relatively early age. At what point will our 2000 vintage models start to do the s. Lacquer cracks are uncommon findings in the posterior pole of highly myopic eyes with a prevalence ranging from 4. Dont forget that acetone nail polish remover is your best remedy for getting your fingers unstuck with crazyglue. September, 1929 science and invention 385 have your the courage to take it. The thin, watery superglue will fill cracks in lacquer pretty well. Lacquer crack appearance definition of lacquer crack.

Peripheral lacquer cracks as an early finding in pathological myopia arch ophthalmol. Eye doctor told me that is due to cracks in retina and advised me to consult retina specialist. Lacquer cracks lacquer cracks are formed by spontaneous ruptures in the bruchs membrane and small haemorrhages may develop within the lacquer cracks. Lacquer cracks have only been observed in the posterior pole of highly myopic eyes. I am 40 years old, and as a practicing attorney, am obviously concerned that my condition will either worsen in my right eye, or also develop in my left eye, thus rendering me essentially disabled. I cant tell you the number of times in the past like you i have had to start over on a failed lacquer finish. If you have been thinking of taking a course but have held back be. Lacquer cracks are considered to represent mechanical fissures in the retinal pigment epitheliumbruchs membranechoriocapillaris complex secondary to eyeball elongation in highly. You can use citristrip too, but its a little more caustic. Now that you have a clean and scratch free finish you can concentrate on filling the cracks. No light or naptha will penetrate the crack, and it is very tiny. In particular, lacquer cracks, myopic schisis, or choroidal neovascularization in the macula area and holes or tears in the periphery of the retina. I poured a nickelsized drop of lacquer onto the bottom of a plastic dairy carton, and let it sit for an hour to thicken.

A thin acrylic lacquer finish will be basically indistinguishable from nitro, except that it wont yellow and crack over time. May 16, 2009 im with frank on this one my initial attempts at nitro spraying many years ago resulted in longitudinal cracks throughout the lacquer on swamp ash mainly and this was definitely a result of too much lacquer, too soon with too little thinner. Leave your guitar in the car trunk on a cold night then open it up in the house. I was recently diagnosed with myopic degeneration in my right eye, and told that i have a lacquer crack in that eye. The beginning stages of posterior staphylomas are very difficult to discern on physical exam for runofthemill retinal specialists or general ophthalmologists. The packo award, which recognizes exceptional service to the society, was presented during the 37th annual scientific meeting, july 2630 in chicago. Lacquer cracks are typical clinical findings in a highly myopic fundus and should alert the clinician to the possibility of retinal hemorrhage with or without cnvm. Like any other lacquer, it can be used to finish wood products and keep painted surfaces shining, though there is much more to it than that.

Lacquer cracks are found in the posterior fundus of 4. Burmese lacquer sets slower, and is painted by craftsmens hands without using brushes. In the present study, diffuse atrophy was defined as yellowish fundus without lacquer cracks. Are all or most nitrocellulose lacquers close enough to use. Its a wonderful guitar and i would like it to be perfect. Theres something alluring about the finish of a vintage guitar, but we can get. However i would suggest you get a second opinion as you seem a little in the dark here and it is not obvious from your post exactly what is going on here. Ophthalmologists should be aware that there are numerous systemic diseases associated with angioid streaks, the most common being pseudoxanthoma elasticum. A short tutorial showing how to get that cracking checking effect on a nitrocellulose guitar finish. Spontaneous lacquer crack lesions in the retinopathy, globe. Longterm natural outcomes of simple hemorrhage associated. I have filled the grain and im, about to order some dark red tinted nitrocellulose lacquer for the frontback which the shop says can be buffed to a good finish directly, without top clear coats would anyone recommend adding clear coats to tinted nitrocellulose lacquer. Methodsthe authors studied 66 eyes 53 patients with lacquer cracks, using general ocular examinations and fluorescein angiography once every 3 to 12 months. The frequency of lacquer crack in patients with pathologic myopia has been estimated to fall between 4.

Over the course of four years, the patients left eye has exhibited progression of chorioretinal atrophy and recurrences of choroidal neovascularization with asneeded treatment and visual acuity of 20200, while the right eye has had a stable lacquer crack. Patchy atrophy and lacquer cracks predispose to the development of choroidal neovascularisation in pathological myopia. Emerson, md, phd retina center of minnesota coauthors. As luck would have it, my 5 year old attacked me while i was playing, resulting in the nick in the finish in the image below boy meets music stand meets mandolin. Depending on several factors, the damage to the retina may or may not be permanent. Apply this paste into the cracks and gently smooth it down. Looking for sources of nitrocellulose lacquer paint is it.

Collected from different scientific periodicals from may, 1841, to the present time. In fact acrylic paints were developed because they were more colourfast and didnt crack and check as easily as the older nitrocellulose paints. The retina is an integral part of this visual signaling as it is. Nitrocellulose lacquer nc lacquer is still available in canada but short of musical instruments its really not used much any more but for this application its tough to beat. Lacquer cracks are present in high myopia and can lead to choroidal neovascularisation and macular haemorrhage, which in turn can cause central visual loss but it is not very common. Lacquer crack means that there is break in bruchs membrane. Nitrocellulose lacquer, often referred to as nitro or cellulose lacquer, is a classic finish used on cars, instruments and furniture up to 1970s. Ophthalmology grand rounds suny downstate medical center. All of them had fairly significant lacquer crazing, especially on the top sheet. Apart from the above, small cracks can appear in a nitro.

Resultsthe lacquer cracks progressed in 37 eyes 56. The membrane forms in response to elevated vegf and occurs primarily in the presence of lacquer cracks also associated with high myopia. Ok, call me morbid, but i was looking at 50s and 60s j45s over the weekend. There is no irregularity or distortion of the neurosensory retina or retinal vessels overlying the lacquer cracks. I have a 10yrold nitro finished guitar wa very, very fine crack in the finish along the center seam under the bridge.

When the lacquer cracks are large, choroidal vessels may traverse the lesion posteriorly. Lacquer cracks are spontaneous ruptures of the elastic lamina of bruchs membrane that appear yellowishwhite and are usually located in the posterior pole. Buy an organic cartridge respirator, wear good gloves and use plenty of ventilation. At least with this supplier if it says nitro there is no acrylic or urethane components and no what guitar guys love to call plasticizers.

Mohawk finishing products m1020541 mohawk finishers choice. The eyes of men have a 2fold incidence of lacquer cracks as compared with those of women. A discussion started in 2002 but continuing through 2019. The only thing harder for me was differential calculus. Mar 06, 2018 nitrocellulose lacquer is a popular finish for some instruments and furniture, but did you know it never cures. Apr 19, 20 lacquer cracks conditionkeywords pathologic myopia, lacquer cracks imaging device fundus camera description color fundus photograph of a 48yearold woman with lacquer cracks in the setting of pathologic myopia. So, can i realistically strip my guitars nitro finish myself. Is this something that can be easily repaired by a violin or.

Choroidal thickness and biometric markers for the screening of lacquer cracks in patients with high myopia. The effect of the nonspecific nitric oxide synthase inhibitor ng nitro larginine methyl ester on the choroidal compensatory. It can be resurfaced and buffed over real nicely too. I realize that many here use behlen nitrocellulose stringed instrument lacquer for their finishes.

That said, in our many discussions on finishes, we always seem to rally around the notion that the reason we use lacquer is that it is so easy to repair. Ive gotten them by accident just like somebody above said. Look for lacquer cracks in high myopes for early warning. Restoring checked and crazed finishes woodworking network. We report a case with lacquer cracks observed in the peripheral fundus. Lacquer cracks are considered to be healed mechanical fissures in the retinal pigment epthelium rpebruchs membranechoriocapillaris. Description high myopia is defined as myopia greater than 6 diopters and an axial length of 26. If you glue your eyelids shut, id go easy on the acetone and maybe seek pro help. Furniture re finishers tend to like good old straight nitrocellulose lacquer because its cheap, easily reversible, rubs and buffs beautifully and does not have the mil thickness limitations of catalyzed products. Latephase fluorescein angiogram reveals hyperfluorescence characteristic of cnvm and. Theres really no way to fix it cracks of that extent cannot be repaired. Nitrocellulose lacquer is spincoated onto aluminum or glass discs, then a groove is cut with a lathe, to make oneoff phonograph records, used as masters for pressing or for play in dance clubs. Lacquer crack appearance a term of art referring to a pattern in the optic fundus characterised by branching clefts in the lamina vitrea and ruptures of bruchs membrane with choroidal atrophy, which is seen in progressive degenerative myopia. Lacquer cracks in pathologic myopia retina image bank.

I bought a couple but am wondering if it will work as well for instruments. Ivfa will show hyperfluorescence as the fluorescein leaks through bruchs membrane, highlighting these cracks. Nitrocellulose lacquer is a material which has many uses both inside and outside the home. Sounds like she had a lacquer crack with a resulting cnv and then avastin injections to stop the bleeding.

Retinal physician easily misdiagnosed retinal entities. Jan, 2016 many guitarists, particularly those who love vintage instruments, believe everything affects the sound of those great old guitars we love so much. Blend new lacquer into old lacquer with flash coats youtube. Now you can get rustoleum or deft lacquer that is a nitro lacquer at you local big box store that is just as good. But lets get started in case the customer shows up early carrying a weapon. This will fill the gaps but it will always be slightly visible. The crucial bit is the nitrocellulose finish because if its poly, oil, acrylic or.

Find lacquer cracks information, treatments for lacquer cracks and lacquer cracks symptoms. After dan repaired a crack in a gibson acoustic guitar the finish didnt look to good. Checking cracking a nitro guitar finish nitrocellulose relic tutorial. The end result is similar but softer than the chinese or japanese lacquer. Lacquer crack lesion lcl, a complication of myopia in human patients, is characterized by loss of retinal pigment epithelium and breaks in bruchs membrane. Roy is right lacquer thinner will rewet the lacquer good news if you know how to make it work for you to blend in new lacquer but bad news when things start going south on you. I was hoping that someone here might be able to help me with another finish related issue. Lacquer cracks observed in peripheral fundus of eyes with high. New york, new york pathologic myopia is a major cause of blindness, the incapacitating visual effects of which occur commonly during the pro ductive years of young adulthood.

Membranes are frequently subfoveal or juxtafoveal with minimal subretinal fluid or exudate. Checking cracking a nitro guitar finish nitrocellulose. One of the most disappointing of those is the tendency to check or crack with a sudden drop in temperature. The progression of lacquer cracks in pathologic myopia. Some beat up, some nicely cared for but well played, and one or two near mint. Packo, md with its inaugural service award, named in his honor. Angioid streaks are bilateral, narrow, irregular lines deep to the retina configured in a radiating fashion emanating from the optic disc, which result from breaks in a weakened bruchs membrane. The effects are seen as erratic crack lines running across the coating. Nitrocellulose lacquer does have some nasty habits. Patchy atrophy and lacquer cracks predispose to the. Mohawk finishing products m1020541 mohawk finishers choice clear satin lacquer, oz. We considered lacquer cracks fig 1b 1b as a separate category in the present study because a previous report described an important relation between myopic cnv and lacquer cracks.

I was also using a commercial brand of nitro which was definitely a problem when used on wood. Lacquer cracks were detected more frequently in the temporal 44. Lacquer does not work well at excessive thickness, nor does it like temperature changes especially if thick, where it becomes very unforgiving. Look for lacquer cracks in high myopes for early warning of.

Hello, im about to spray my tele project using my hvlp system. Therefore, some retina specialists have hypothesized that sh may be a risk. The purpose of this japanese study was to analyse the morphologic features and natural progression patterns of lacquer cracks lc. They represent healed and mechanical breaks of the retinal pigment.

Nitrocellulose versus catalyzed lacquers for furniture finishing. A 37yearold patient with bilateral high myopia who visited our clinic was examined by. Clear nitro cellulose lacquer can be used over the tinted lacquers, to give a protective top coat that can be polished to a high gloss. Nitrocellulose also yellows with time, especially when exposed to excessive sunlight. But each or any combination of film thickness examples can result in an overlystiff film which can crack like mad. Nitrocellulose lacquer frequently asked questions note lacquer should only be used in a well ventilated area. Solvents and binding do not mix, but you have a special so i doubt there is binding.