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. 2012. Web. 17 Nov. 2012. <http://www.biomedicalblog.com/new-device-to-detect-blindness-in-babies/22000/>.

Facts About Retinopathy of Prematurity (ROP)." Facts About Retinopathy of Prematurity [NEI]. N.p., n.d. Web. 24 Nov. 2012. <http://www.nei.nih.gov/health/rop/rop.asp>.

"Eye Exam for Retinopathy of Prematurity by Alexandra Howson, PhD." Eye Exam for Retinopathy of Prematurity. Beth Israel Deaconess Medical Center, 2008. Web. 25 Nov. 2012. <http://www.bidmc.org/YourHealth/MedicalProcedures.aspx?ChunkID=588196>.

"Spectral-Domain Optical Coherence Tomography (SD-OCT)." Heidelbergengineeringcom RSS. Heidelberg Engineering, 2012. Web. 25 Nov. 2012. <http://www.heidelbergengineering.com/us/products/spectralis-models/technology/spectral-domain-oct/>.

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.