Wednesday, October 15, 2014

Ophthalmology & Art

Ophthalmology and Art:
(Stanford ophthalmologist Michael f. Marmor presents the following research regarding the evolution of Monet’s paintings as impacted by the progression of his cataracts)

Monet, one of the most influential impressionists of the early 20th century, had cataracts that worsened steadily from 1912 to 1922. Slowly progressive age-related cataracts manifest as a yellowing and darkening lens, greatly impacting color perception and visual acuity.

We find striking changes in the style of Monet’s paintings during the period of progressive visual failure. These late paintings show predominant red-orange or green-blue tones that are quite different from the subtle color shading that characterizes Monet’s earlier Impressionistic work. There is nothing in Monet’s correspondence to suggest that he had any intention of mimicking the abstractions and distortions explored by other painters in the early 20th century. It is very difficult to know a century later whether these works appear to us as Monet wanted them to appear. After having his cataracts removed, he destroyed many of his late canvases. Many remain only because they were salvaged by family and friends.

1914-1915: Monet’s visual difficulties were becoming more serious. He wrote that “colors no longer had the same intensity for me . . . reds had begun to look muddy . . . my painting was getting more and more darkened.” He felt that he could no longer distinguish or choose colors well and was “on the one hand trusting solely to the labels on the tubes of paint and, on the other, to force of habit.”

1919-1922: Monet was afraid that he might have to stop painting. He would only paint during certain hours when the lighting was optimal. He was well aware that colors were lost in the yellow blur of his vision.

1923: Monet finally acquiesced to cataract surgery. Though he regained acceptable reading vision, he was acutely aware of changes in color perception in the eye that underwent surgery. He complained vigorously for more than a year that the world appeared either too yellow or too blue. He finally regained confidence in his view of the world in 1924 and worked vigorously to refine the great Water Lily canvases now hanging in Paris, France.

(The following information is from Guy Gugliotta’s article “Simulations of Ailing Artists’ Eyes Yield New Insights on Style,” in the New York Times, 2004)

France in the late 19th and early 20th centuries embraced an astonishing number of important artists who battled serious physical shortcomings — sometimes for decades.

Edgar Degas, known for his paintings of nudes and ballet dancers, suffered retinal disease, probably macular degeneration, for nearly half his life. Degas first noticed eye problems as a national guardsman in the Franco-Prussian War in 1870-71, when he could not aim his rifle because of a blind spot in his right eye. By 1890, his left eye also began to deteriorate. Light dazzled him. He tried to use peripheral vision to compensate for his loss of central vision.
       Retinal disease, unlike cataracts, does not cause major difficulties with color perception. But Degas had blurred vision, affecting his ability to perceive form and line. Dr. Michael Marmor used computer simulations to gauge the problem. The simulations showed that Degas’s draftsmanship became less detailed and the shadowing coarsened as his sight deteriorated. Even so, his work would have looked smoother to him than it actually was.

Mary Cassatt, like Monet, had cataracts. Cataract surgery was possible in the early 1900s, but it did not always work. “I look forward with horror to utter darkness,” Cassatt wrote in 1919, fearing that an operation on her left eye would be “as great a failure as the last one.”

Camille Pissarro had a malfunctioning tear duct, and in his last 15 years, suffered chronic infection of the tear sac in his right eye. Thus, he had difficulty painting outdoors, particularly in winter.        
       Still, “There is a certain element of ‘I’m not going to stop what I want to do,’” said a great-grandson of the artist, Joachim Pissarro, an art historian at Hunter College. “You don’t want to over-analyze the impact.” Indeed, Pissarro’s late cityscapes of Rouen and Paris, regarded as masterpieces, were painted from indoors behind a window to protect his eyes.

For artists with eye problems, it is perhaps surprising that infirmities did not change their styles more radically. A key, some experts said, might be that although artists’ perceptions might be influenced by physical limitations, they are also informed by what the artists know and what they want to do.

“Most of us are into quick snapshots,” said John Elderfield, chief curator of painting and sculpture at the Museum of Modern Art. “But the ability to translate visual memory into a different medium is another thing altogether. Monet had been painting for 50 years when he had cataracts. Of course he painted from memory. He painted from memory all his life.”

*Edited for length
Sources:

Wednesday, October 1, 2014

Diabetes and Your Eyes


If Diabetes impacts you or a loved one, read this wonderfully informative article from DiabeticConnect.



People with diabetes have a higher risk for eye problems. Over time, high blood sugar and high blood pressure levels damage blood vessels throughout the body. This includes the blood vessels that supply the eye.

Scanning Electron Microscope image of retinal blood vessels. 
(source:http://www.gettyimages.com.au/detail/photo/retina-blood-vessels-coloured-scanning-high-res-stock-photography/123773764)

The retina of your eye has tiny, fragile blood vessels on it. When harmed, these blood vessels can swell, weaken and clog. The term used to describe this damage is "diabetic retinopathy," and it’s the leading cause of blindness in adults.

(source: http://peposevision.com/diabetic-retinopathy/)

Having diabetes also ups your risk for cataracts and glaucoma. The longer you have diabetes, the higher your chance of having diabetic-related eye problems.


Signs of diabetic retinopathy include:
1. Blurry, cloudy, or distorted vision. In the early stages of diabetic retinopathy, the blood vessels leak, which can alter your sight. If fluid from the blood vessels leaks into the macula (the inner part of the retina), vision may become blurry.

2. Vision loss or dark area in your vision. Sometimes new blood vessels grow on the surface of the retina after old blood vessels become damaged. The new blood vessels can bleed into the eye and cause vision loss. When diabetic retinopathy is left untreated, scar tissue may build up at the back of the retina, causing the retina to break away from the eye. This is called “retinal detachment”, and it can lead to permanent blindness.

3. Spots floating in your vision (“floaters”). Floaters may be a sign of blood vessel leaks, and they can for days or months. Even if the floater goes away quickly, it’s important to call your doctor before more severe bleeding occurs.

4. Trouble seeing colors. Growing or leaking blood vessels can impair your ability to see colors.

5. Pain, pressure or redness of your eye. Diabetic retinopathy can also lead to macula edema, or swelling of the macula, which can be painful.

6. Double vision. Seeing double may be a sign of cataracts, the clouding of the eye’s lens. Cataracts can also bring on blurred or dimmed vision.

7. Watery eyes, halos, eye aches and headaches. These discomforts may signal glaucoma, which is an increase in fluid pressure inside the eye that pinches the optic nerve. This causes nerve and retinal damage and, eventually, blindness. Other symptoms of glaucoma include blurred vision, pain, and loss of sight.

If you have any of these symptoms or any changes in vision, see your eye doctor at once. Seeking prompt treatment for eye problems may save your vision.

Keep Your Eyes Healthy
Following your diabetes care plan as directed by your doctor can lower your risk of all complications, including diabetic retinopathy. The better you control your blood sugar, the lower your chance of eye problems.

Diabetic retinopathy doesn’t usually cause symptoms in the early stages of the disease, so it’s crucial to get regular eye exams once per year — or as often as your doctor recommends — even if your eyesight seems fine."