Early-onset posterior subcapsular cataract

Early-onset posterior subcapsular cataract (EOPSC) is a rare inherited eye condition where the lens of the eye becomes cloudy at an unusually young age — often in childhood, adolescence, or early adulthood. The lens sits inside the eye and helps focus light onto the retina. In this condition, cloudiness develops specifically at the back surface of the lens (the posterior subcapsular region), which is the area most important for sharp, detailed vision. This location makes the condition particularly disruptive to everyday tasks like reading, using a phone, or driving, especially in bright light or when looking at lit screens. The main symptom is blurred or hazy vision that gets worse over time. People often notice glare and halos around lights, difficulty reading fine print, and reduced vision in bright conditions. Unlike age-related cataracts that typically appear after age 60, EOPSC can appear in children or young adults, sometimes affecting both eyes. It may occur on its own or as part of a broader genetic syndrome. Treatment is primarily surgical. Cataract surgery to remove the cloudy lens and replace it with an artificial lens (intraocular lens implant) is highly effective and is the standard of care. When performed at the right time, surgery can restore good vision. Regular monitoring by an eye specialist is important to decide the best timing for surgery and to check for any related eye problems.

Bring these to your next appointment

• Q1.Which gene or genes might be causing this cataract, and should our family have genetic testing?,How quickly is the cataract likely to progress, and when would you recommend surgery?,What type of artificial lens would be used, and how will it be chosen for a growing child's eye?,What is the risk of lazy eye (amblyopia), and how will we prevent or treat it?,Are there any other eye problems I or my child should be monitored for, such as glaucoma or retinal issues?,What are the chances that other family members will develop this condition?,Are there any clinical trials or new treatments we should know about?

Common questions about Early-onset posterior subcapsular cataract