 SD OCT screens for retinopathy of prematurity in babies eyes  Uses narrow beams of light to penetrate deep layers of tissue and produce a 3-D image.

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Presentation transcript:

 SD OCT screens for retinopathy of prematurity in babies eyes  Uses narrow beams of light to penetrate deep layers of tissue and produce a 3-D image of posterior section of an infants eye

 Eye disorder effecting premature infants › Weighing less than 2.75 pounds › Born earlier than 31 weeks  ROP is caused by abnormal growth of blood vessels in the retina, causing the retina to be pulled out of position and even become detached › Five stages, ranging from mild abnormal growth to detached cornea

 Abnormal growth happens because normal retinal development doesn’t complete until a few weeks after birth › Before blood vessels reach edge of retina, growth stops. › The edge of the retina doesn’t receive enough oxygen so it sends out signals to other areas of the retina for nourishment, resulting in abnormal growth of vessels. › New blood vessels are fragile and can break easily causing bleeding and scaring, which pulls on the retina when they shrink, causing a detached retina

 Usually tested about 4- 6 weeks after birth › Eyelid speculum is used to keep the eyes open › Lens with a light will be used to look in the babies eyes › Use a scleral depressor to move the eye into different positions o OCT- Optical Coherence Tomography  Reflects light to create 2D and 3D images of the eye  Used moving reference mirror to measure the time it took for light to be reflected Lengthy process Limited image quality

 Developed at Duke University  Measures multiple wavelengths of reflected light › 100 times faster › 40,000 pictures per second for clearer images  TruTack technology- Tracks eye movement during imaging › Detect changes during the scan

 Hand-held probe allows the baby to stay in the incubator during testing  Allows for cross-sectional images of the retina, allowing for better visualization  Reduces time spent on diagnosis › Faster diagnosis, faster treatment, less damage to an infants vision

 "New Device To Detect Blindness In Babies | Biomedical Engineering & Biotechnology News." New Device To Detect Blindness In Babies | Biomedical Engineering & Biotechnology News. N.p., 16 Aug Web. 17 Nov  Facts About Retinopathy of Prematurity (ROP)." Facts About Retinopathy of Prematurity [NEI]. N.p., n.d. Web. 24 Nov  "Eye Exam for Retinopathy of Prematurity by Alexandra Howson, PhD." Eye Exam for Retinopathy of Prematurity. Beth Israel Deaconess Medical Center, Web. 25 Nov  "Spectral-Domain Optical Coherence Tomography (SD-OCT)." Heidelbergengineeringcom RSS. Heidelberg Engineering, Web. 25 Nov  Lee AC, Maldonado RS, Sarin N, O'Connell RV, Wallace DK, Freedman SF, Cotten M, Toth CA. "National Center for Biotechnology Information." (2011): n. pag. Print.