If the sensor you have is the one I'm thinking of (of course a link would have been nice), then Russell Cameron (aka OddBot) designed it for Dagu Robotics.
OddBot used to support Dagu products over on Let's Make Robots (LMR) but LMR was recently purchased by RobotShop (aka Evil Incarnate Inc.). The new owners managed to make most of us (former) active members of LMR leave. Many of us former members of LMR (including OddBot) now talk about our robots over at RobotRebels.org.
There used to be lots of resources for the Compound IR Eye on LMR but the new demonic owners have deleted all the posts made by members who wouldn't agree to their new terms of service. You might try asking a question about the compound eye at Robot Rebels. There's a good chance OddBot will reply. Of course RobotShop has a forum and if you're willing to sell your soul you could ask a question there.
We seem to have a mismatch of expectations and understanding.
I don't think I understand this.
You were calling both the IR LEDs and the IR phototransistors "LEDs". Goove correctly pointed out one generally doesn't use LEDs for both emitting "light" and sensing it (though this is possible).
IIRC, the four clear objects are the IR LEDs and the eight dark objects are phototransistors. The dark plastic of the phototransistors filters out much of the visible light so the sensors aren't bothered (as much) by the ambient light.
It takes a while to learn how to ask good questions on forums like these. Don't be surprised if you get razed a bit when people think you didn't provide enough information. You see Groove's comments as "cryptic" (and possibly rude). IMO, he's been downright friendly. If you ask OddBot a question, he'll likely give you a harder time than Groove if he thinks you haven't done your share of the work.
When you ask a question on a forum, you shouldn't expect people to know what you're asking about. Help them help you by providing links (using URL tags) to the items you're asking about. Of course no one is "asking for cryptic answers" but you'll likely get them. You're asking for free help. Receiving a bit of razing is the price you pay for the help.
If you're lucky someone will say "you're doing it wrong". I find these replies the most helpful (when I am doing it wrong).
I'm relatively new to this forum but I've been participating in other technical forums for several years and cryptic questions like yours are very common. It gets tiresome to have to request links to documentation. It's not uncommon for replies to these sorts of requests to come with a bit of humor or sarcasm. Don't worry about it. It's usually justified and you just don't know enough to realize how poorly your question was asked.
I think a good place to start with our problem is to make a very simple program which displays the data from the eye to the serial terminal. This will likely help you understand what the program is doing.
I was typing this while the last few posts were made. Goove is correct. You haven't told us much. I happen to know what you're talking about because I'm familiar with the sensor.