Anyone can view PRPTalk, PRP Placements and Eyetalk but you must be a College Member and logged in to the College website to post a reply or to start a new discussion
You are here: Forum Home > Students > PRPTalk > indirect ophthalmoscopy
| Author | Subject: indirect ophthalmoscopy |
|---|---|
 kappa
|
indirect ophthalmoscopy
Apr 23, 2006 20:47:59 Why is it that you getter a better fundus view through media opacities with indirect technique than direct? |
|
Stephen Meynell
|
RE: indirect ophthalmoscopy
Apr 23, 2006 21:58:42 -its to do with the way the image focus works -partly because it gives a shallow depth of focus - the opacities are well out of focus. -partly because the image system is focused at the pupiliary plane (so only passes through a smal art of the opacity). If you recall, the direct field of view is limited by the pupil and the indirect is limited by the condenser diameter. =steve |