We report a case with lacquer cracks observed in the peripheral fundus. Quite what hed make of fenders desire to introduce nitrocellulose lacquer to its most modern facility in ensenada, mexico, is open to debate. The progression of lacquer cracks in pathologic myopia. Retinal physician easily misdiagnosed retinal entities. Can develop from advanced diffuse chorioretinal atrophy, lacquer cracks or along the border of a posterior staphyloma. 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.
Take a can of that dust off stuff compressed air in a can used for blowing off computer stuff. Lacquer crack appearance definition of lacquer crack. High myopia tractional vascular changes in high myopia optomap image fundus autofluorescence optical coherence tomography oct description. 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.
Look for lacquer cracks in high myopes for early warning. There, the low mass, thinness and hardness of a nitro finish matches well with the light, thin, stiff spruce tops of violins and cellos. Nitro lacquer finishes come to us via the world of classical stringed instruments. How to refinish a guitar with nitrocellulose lacquer. 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.
Myopic chorioretinal atrophy and lacquer cracks springerlink. Would there be, perhaps, some brand of automotive spray paint that would work for this purpose. Choose a lacquer repair kit which contains the substances that you can use to fill the cracks in the lacquer. Similar results have been reported in some regions such as the middle east and south america. A 37yearold patient with bilateral high myopia who visited our clinic was examined. 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. Aliphatic betanitro alcohols for nonenzymatic collagen crosslinking of scleral tissue. A properly matched spray gun needle, nozzle, and spray cap in good working order. Crackling lacquer quick transitions between heat and cold are another way to create a crackle effect in a lacquer finish. Patients with severe forms of myopia or high myopia are more susceptible to other ocular abnormalities such as lacquer cracks, retinal detachment, chorioretinal atrophy and glaucoma. A short tutorial showing how to get that cracking checking effect on a nitrocellulose guitar finish. Looking for sources of nitrocellulose lacquer paint.
I cant tell you the number of times in the past like you i have had to start over on a failed lacquer finish. 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. Ophthalmology grand rounds suny downstate medical center. 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. The membrane forms in response to elevated vegf and occurs primarily in the presence of lacquer cracks also associated with high myopia. Nitrocellulose lacquer does have some nasty habits. Nitrocellulose lacquer, often referred to as nitro or cellulose lacquer, is a classic finish used on cars, instruments and furniture up to 1970s. Prepping for a nitro lacquer paint job amateur luthiery.
Linear lesions including lacquer cracks and myopic stretch lines are the main signs in high myopia retinas, and can be. Nitrocellulose also yellows with time, especially when exposed to excessive sunlight. Lacquer crack lesions in pathologic myopia sciencedirect. Checking cracking a nitro guitar finish nitrocellulose. What should have been a oneweek update wound up taking the better part of a month due to a combination of some minor mistakes on my part and the uncooperative weather. Lacquer cracks are uncommon findings in the posterior pole of highly myopic eyes with a prevalence ranging from 4. I usually dont recommend trying to fix such checks, because they are often an inevitable part of the nitrocellulose lacquer aging process. Nitrocellulose lacquer is made by taking cotton and treating it with. Introduction lacquer cracks are yellowish linear lesions found in the posterior fundus of 4.
Lacquer cracks are found in the posterior fundus of 4. Nitrocellulose lacquer is a material which has many uses both inside and outside the home. Pdf peripheral lacquer cracks as an early finding in. I had hoped to post this update much earlier in the month. Lacquer cracks consist of ruptures in the retinal pigment epithelium rpebruchs membranechoriocapillaris complex. I was also using a commercial brand of nitro which was definitely a problem when used on wood.
Myopia is one of the most prevalent eye diseases and a worldwide public. They represent healed and mechanical breaks of the retinal pigment. Lacquer cracks observed in peripheral fundus of eyes with high myopia mitsuki suga, kosei shinohara, kyoko ohnomatsui department of. Methodsthe authors studied 66 eyes 53 patients with lacquer cracks, using general ocular examinations and fluorescein angiography once every 3 to 12 months. Anyone servicing the wood finishing market should be able to get nc lacquer, the challenge maybe the quantities. Prevention and management of myopia and myopic pathology iovs. 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. Referral for oct or ophthalmology to rule out cnv chairside reference. Depending on the manufacturing process, nitrocellulose is esterified to. Some people said nitro over polyyes, poly over nitrono and some said the exact opposite. In the present section, tessellated fundus, diffuse and patchy atrophy, and lacquer cracks will be considered as part of the myopic chorioretinal atrophy syndrome. 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.
Leave your guitar in the car trunk on a cold night then open it up in the house. The development of lacquer cracks in pathologic myopia richard m. Recently, the doctor has found lacquer cracks in my eyes. 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. Indocyanine green angiographic findings of lacquer cracks. Ive gotten them by accident just like somebody above said. The ophthalmoscopic findings include peripapillary atrophy and linear chorioretinal atrophy corresponding to a lacquer crack. The color was cool when you bought it photo 1, but now youd like a. In western europe, the estimated prevalence of myopia is over 25%.
Wherever the new lacquers solvents touch the original lacquer, they will soften and cause that area to expand a bit in the process. The firm that supplies our nitro also supplies the pigments and does the color matching mixing and tinting for us as well. Compressor in good working order and drained once or twice daily and pressure regulator controls, and moisture trap installed in the air line as close. I was recently diagnosed with myopic degeneration in my right eye, and told that i have a lacquer crack in that eye. Lacquer cracks and primary atrophic changes appear excavated on sdoct. One of the most common longitudinal progression patterns observed in a longterm study of myopia mean followup time of 12. Lacquer cracks definition of lacquer cracks by medical. Membranes are frequently subfoveal or juxtafoveal with minimal subretinal fluid or exudate. Lacquer cracks conditionkeywords pathologic myopia, lacquer cracks imaging device fundus camera description red free fundus photograph of a 48yearold woman with lacquer cracks in the setting of pathologic myopia. Patchy atrophy and lacquer cracks predispose to the. They are typically less than 1 disc diameter in size and are located between the neurosensory retina and the rpe. I was in my local guitar shop yesterday for strings and while chatting with the owner the question of nitro as an instrument finish arose when i told him that a uk company in manchester had recently started selling spray cans of it and i thought it may have been of interest to him. 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. We use a nitro sealer beneath this which is basically a nitro with some filler in it but any compatible sealer is probably ok.
Myopia is a common refractive error, characterized by an excessive. Lacquer cracks in pathologic myopia retina image bank. In particular, lacquer cracks, myopic schisis, or choroidal neovascularization in the macula area and holes or tears in the periphery of the retina. 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. Now that you have a clean and scratch free finish you can concentrate on filling the cracks. Ophthalmology grand rounds matthew gorski, md suny downstate medical center. Full text lacquer cracks observed in peripheral fundus of eyes with. Lacquer cracks observed in peripheral fundus of eyes with. Find lacquer cracks information, treatments for lacquer cracks and lacquer cracks symptoms. Epidemiology, physiopathology epidemiological studies consistently show high myopia as the third or the fourth cause of legal blindness in developed countries, with a higher. Nitro finishes, however, crack and yellow with age, and they can check. My lacquer has about 25% solids, meaning that 75% of the thickness will go away as the solvents evaporate from it. Peripheral lacquer cracks as an early finding in pathological myopia article pdf available in archives of ophthalmology 12412. One of the most disappointing of those is the tendency to check or crack with a sudden drop in temperature.
Francesco bandello, md, demonstrates how octa depicts unique pathologic features of lacquer cracks secondary to pathologic myopia. In the present study, diffuse atrophy was defined as yellowish fundus without lacquer cracks. The development of lacquer cracks in pathologic myopia. Lacquer finishing trouble shooting guide wood finish supply. Lacquer cracks are breaks seen in the peripheral fundus of the eyes of people with high myopia. Looking for sources of nitrocellulose lacquer paint is. Apart from the above, small cracks can appear in a nitro. I was thinking if i can use a clear nitro lacquer right at the wood to act it as a primersealer mostly to even out the surface and prevent the wood from taking too much color coat. Youve been playing it for years, but the time has come to give it a makeover. A discussion started in 2002 but continuing through 2019. 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. It would look like this clear nitro on bare wood, color coat nitro, same clear nitro on top of the color. This will fill the gaps but it will always be slightly visible.
Nitro is made from wood so it allows the wood to breathe and resonate naturally, improving the tone. The increasing prevalence of myopia has attracted global attention recently. This may be due, in part, to the association of lacquer cracks with highly myopic patients in whom lasik is nowadays not indicated as a primary surgical procedure. Based on topographic correspondence visible only with octa, he speculates that perforating vessels may be consequential for choroidal neovascularization.
The crucial bit is the nitrocellulose finish because if its poly, oil, acrylic or. If your electric guitar has a worndown or otherwise damaged finish, you can refinish it with a nitrocellulose lacquer, giving your axe a nice new look. 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. Resultsthe lacquer cracks progressed in 37 eyes 56.
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