Broadband access connections can use a direct connection or some form of tunneled protocol such as PPP or L2TP to connect the CPE to the Internet. The service provider must secure its own network infrastructure when providing IPv6 services. Figure 3-5 shows several broadband access provider network topologies.
The list of signs and symptoms mentioned in various sources for Coloboma of iris includes the 7 symptoms listed below: Hole in the iris. Unusual shaped pupil. Blurred vision. Impaired vision. Impaired central vision. Asymptomatic. Light sensitivity.
Coloboma can affect one eye (unilateral) or both eyes (bilateral), and can affect a number of different parts of the eye. It can affect the iris which is the colored part at the front of the eye. It can affect the lens, the part of the eye which helps focus light onto the retina.