Pathologic myopia ohnomatsui annals of eye science. The progression of lacquer cracks in pathologic myopia. If youre lucky ive been lucky often with this and choose the right color, you really have to look hard to see the repair. Lacquer morning gerald, lacquer, like shellac, is an evaporative finish composed of a resin dissolved in solvents. Case 1 shows the progression of a patient with high myopia and pathologic chorioretinal atrophy. Based on topographic correspondence visible only with octa, he speculates that perforating vessels may be consequenti. The conservation and restoration of lacquerware prevents and mitigates deterioration or damage to objects made with lacquer. Once the strings were off, it was obvious that it was a lot more than the lacquer. The guitar has 3 color coats, so thats about 18 oz.
Fuchs spots macular degenerations due to myopia, lacquer cracks breaks. After that, apply either lacquer or an oilbased varnish. They represent healed and mechanical breaks of the retinal pigment. Methodsthe authors studied 66 eyes 53 patients with lacquer cracks, using general ocular examinations and fluorescein angiography once every 3 to 12 months. Lacquer crack lesions in pathologic myopia sciencedirect. The analysis of lacquer crack in the assessment of.
A moderately skilled painter can spray lacquer on kitchen cabinets and woodwork and get goodlooking finishes. 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. The ophthalmoscopic findings include peripapillary atrophy and linear chorioretinal atrophy corresponding to a lacquer crack. In the present section, tessellated fundus, diffuse and patchy atrophy, and lacquer cracks will be considered as part of the myopic chorioretinal atrophy syndrome. 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. The beginning stages of posterior staphylomas are very difficult to discern on physical exam for runofthemill retinal specialists or general ophthalmologists. Caused by stretching of ocular tissue due to axial elongation, but not correlated to length.
Clinically, they appear as fine, irregular yellow lines, single or multiple, linear or stellate, often branching and crisscrossing at the posterior pole, usually within an area of staphyloma. You cannot do any thing to prevent it but eye specialist may do further investigation like fluorescein angiography or ocular coherence tomography oct and may. Lacquer cracks are uncommon findings in the posterior pole of highly myopic eyes with a prevalence ranging from 4. Lacquer cracks are breaks seen in the peripheral fundus of the eyes of people with high myopia. Lacquer cracks definition of lacquer cracks by medical. 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.
Lacquer finishing trouble shooting guide wood finish supply. Nitrocellulose lacquer does have some nasty habits. Resultsthe lacquer cracks progressed in 37 eyes 56. Why we dont use lacquer on kitchen cabinets kansas city. They may be the healed mechanical breaks of retinal pigment epithelium rpe, bruchs membrane, and choriocapillaris complex and have been related to a weak bruchs membrane. Look for lacquer cracks in high myopes for early warning. Appear as a yellowwhite line in eyes with pathological myopia. Recent reports have supported the theory that lacquer cracks as well as other macular degenerative changes in pathologic myopia are caused by mechanical stretching of the retina and choroid within the poste. Lucky for me, the doctor treated me very immediately and i was fine in a few days. New york, new york pathologic myopia is a major cause of blindness, the incapacitating visual effects of which occur commonly during the. Lacquer cure time american association of woodturners. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease.
The content on this site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. After buffing i get cracks that appear in the color coat and seem to penetrate into the primer. They are typically less than 1 disc diameter in size and are located between the neurosensory retina and the rpe. Patients with history of hypertension or diabetes, confounding ocular disease, additional eye operations, including vitreoretinal or cataract surgery or refractive surgeries, and other myopic complications including lacquer cracks, posterior staphyloma, choroidal atrophy, choroidal neovascularization, subretinal hemorrhage, macular traction, macular hole, retinal detachment. Clinical guide to degenerative myopia optometry students. I know, lacquer is old technology, but only the hood is left to do. These distinctive fundus changes are actually quite common in axial myopia and may. Membranes are frequently subfoveal or juxtafoveal with minimal subretinal fluid or exudate. Retinal physician easily misdiagnosed retinal entities. Marticorena j, gomezulla f, fernandez m, pazos b, rodriguez cid mj, sanchezsalorio m. Lacquer cracks observed in peripheral fundus of eyes with high myopia. Lacquer will melt lacquer, so when it dries, although it wont look perfect, itll weld the crack together. A 37yearold patient with bilateral high myopia who visited. Lacquer cracks observed in peripheral fundus of eyes with high.
Lacquer cracks observed in peripheral fundus of eyes with. The people who want a finish that will naturally age get just that, but it is still sealed underneath with a finish that wont crack with swings in temperature and allows this to be a production guitar versus solely hand finished since the poly sealer streamlines the prep. Lacquer cracks and primary atrophic changes appear excavated on sdoct. Lacquer over the poly is the best of both worlds in a way. Now that you have a clean and scratch free finish you can concentrate on filling the cracks. Apply this paste into the cracks and gently smooth it down. Ohnomatsui k, yoshida t, futagami s, yasuzumi k, shimada n, kojima a, et al. Reasons for the development of lacquer cracks remain unclear. Peripheral lacquer cracks as an early finding in pathological myopia article pdf available in archives of ophthalmology 12412. 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 crack appearance definition of lacquer crack. Patchy atrophy and lacquer cracks predispose to the development of choroidal neovascularisation in pathological myopia.
I havent used the premixed stuff before, but i used the premixed lacquer paint in the same brand with good results. 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. The cure for this type of cracking is to sand it back and recoat as soon as its dry enough. Instead, as the solvents evaporate, the resin is left behind. The difference is that a jewel looks good even after 10 years. They represent healed and mechanical breaks of the retinal pigment epithelium, bruchs membrane, and choriocapillaris complex. In the present study, diffuse atrophy was defined as yellowish fundus without lacquer cracks. Silicone is an oil that is contained in many furniture polishes and is difficult to totally remove from a surface because it gets through cracks in the finish and into the wood. 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. Also, the doctor told me to rinse my eyes right away next time. Lacquer cracks in pathologic myopia retina image bank. Cracks are very thin, about 12 in length in random directions. Lacquer cracks axial ruptures inbruchsmembrane which small haemorrhages may occur. Wet sandingcracked lacquer inlays and finishing chat.
Ideally, the new lacquer should wick its way into and along the crack from the chip. All fender guitars produced after 1955 used this product until 1967, when fender began experimenting with polyesters an undercoat. Longterm natural outcomes of simple hemorrhage associated. This will fill the gaps but it will always be slightly visible. Silver metallic lacquer over 1 epoxy primer, 2 feather fill and 3 regular lacquer primer. Pathological myopia is the leading cause of severe visual loss in many countries. Pdf peripheral lacquer cracks as an early finding in. 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 to the spray gun as possible within 10 to 25 feet of the gun. The diagnosis of pathological myopia does not have a universal. Patchy atrophy and lacquer cracks predispose to the. The wide cracks appear as the coating is drying and happens when it is applied too heavily or the solvents flash off too quickly. Myopic chorioretinal atrophy and lacquer cracks springerlink.
Round, subretinal hemorrhages that clear spontaneously. I felt awful at that time and it just burnt my eyes like the hell. By 1968, virtually all fender guitar products used polyester as an undercoat, including necks. Under close inspection with a bright light, you can still see a hint of the cracks because the lacquer did not seep all the way down into the crack this could have been remedied by first widening the cracks with a knife but it is good enough that it will never be noticed by anyone but me and that is only because i know they. I am just wondering if you guys know if fender uses a thick poly base coat on these like on the avri series, or if they are straight lacquer. I repaired what looked like a lacquer crack on an epi les paul neck last night. 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.
Thus, new classification is expected to include only the lesions specific to pm thus, c2, c3, c4, lacquer cracks, myopic cnv and it is better to. Hey all, i just picked up a fender classic series lacquer 60s stratocaster in hopes that the lacquer will age gracefully over the years. The resin will not reach its full hardness until all of the solvents have evaporated. The development of lacquer cracks in pathologic myopia. Peripheral lacquer cracks as an early finding in pathological myopia arch ophthalmol. I used a glue syringe from stewartmacdonald and titebond iii cleans up with water and clamped it for several hours. Recent reports have supported the theory that lacquer cracks as well as other macular degenerative changes in pathologic myopia are caused by mechanical stretching of the retina and choroid within the posterior staphyloma. Theres a specialty finish called crackle lacquer thats designed to produce cracks for the visual effect. How to stop a lacquer crack from spreading on a guitar. In particular, lacquer cracks, myopic schisis, or choroidal neovascularization in the macula area and holes or tears in the periphery of the retina. One of the most disappointing of those is the tendency to check or crack with a sudden drop in temperature. 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. Mitsuki suga, kosei shinohara, and kyoko ohnomatsui.
Lacquer cracks are breaks in bruchs membrane frequently observed in the posterior pole of a highly myopic eye. A properly matched spray gun needle, nozzle, and spray cap in good working order. The two main types of lacquer are asian, made with sap from the urushi tree, and european, made with a variety of shellac and natural resins. Shop lacquer clocks and other lacquer decorative objects from the worlds best dealers at 1stdibs.
Update on the pathology of pathological myopia springerlink. Lacquer cracks are found in the posterior fundus of 4. The fender is bare metal, the tank is old lacquer on the bottom, and bare metal with a small amount of filler, and the front air dam is plastic. Conservation and restoration of lacquerware wikipedia. I usually dont recommend trying to fix such checks, because they are often an inevitable part of. Home builders in kansas city love putting lacquer finishes on custom kitchen cabinets. High myopia is a major cause of legal blindness in many developed countries. Remove the finish with mineral spirits and wipe it clean with fresh lacquer thinner or denatured alcohol. Lacquer can be damaged by age, light, water, temperature, or damaged substrate. Because it is so slick, silicone causes fisheye the finish bunching up in ridges as it flows away from areas, such as pores, where the silicone exists.
263 486 1248 7 1416 286 42 14 1426 160 1315 1243 547 1181 898 614 107 452 34 211 1273 685 1332 21 535 387 526 1446 1494 1265 420 615 16 69 534 492 144