Cataracts are a common eye problem in which the lens becomes cloudy. They can lead to other issues like uveitis and glaucoma. Cataracts affect more than 22 million people in the United States and 95 million worldwide. Treatment is necessary to restore visual function and prevent serious complications.<\/p>\n
Cataract surgery<\/strong><\/em><\/a> can improve vision for 95% of patients. However, there is a slight chance of complications. These complications include macular edema, cloudy vision, infection, and retinal detachment<\/a>.<\/p>\n The surgeon must measure the eye size before cataract surgery to choose the right lens power for implantation. Surgeons make structural eye measurements before surgery using various methods, such as biometry or applying mathematics to biology. For example, we measured anterior chamber depth and lens thickness using ultrasound biometry.<\/p>\n Optical biometry uses light instead of sound and can obtain tired measurements with one device. Its use has become the gold standard, except in patients with a\u00a0Grade 4 or higher or white cataract.<\/p>\n In this article, we review the history of optical biometry advancements and provide a technical introduction to the approach. We also compare optical biometry with traditional ultrasound biometry.<\/p>\n