Table – 1 POAG PACG CONTROLS
Number of subjects 17 14 17
Number of eyes 34 20 34
NUMBER OF PARTICIPANTS
In POAG group, both eyes were affected in all the participants while in PACG group, 1 patient was uniocular and only one eye was diagnosed with PACG in 6 patients. In control group, both eyes of patients were included in our study.
Table – 2
Sex Distributions Male Female
POAG 10(58.82%) 7(41.17%)
PACG 7(50.0%) 7(50.0%)
Control 11(64.70%) 6(35.29%)
Male to female ratio was 1.4:1, 1:1, and 1.8:1 in POAG, PACG and control groups respectively.
GENERAL CHARACTERSTICS OF STUDY SUBJECTS
(17 patients) PACG
(14 patients) Controls
(17 patients) P value
Mean + SD 60.29 + 8.06 59.14+6.34 57.18+ 5.75 0.412 …show more content…
Similarly, mean RIs were significantly raised in POAG patients as compared to PACG patients. While in CRA, mean PSV was significantly lower in PACG patients as compared to POAG patients. The difference in rest of the parameters did not reach up to the level of statistical significance.
Optic nerve head is mainly supplied by the short posterior ciliary arteries which is a branch of ophthalmic artery. The contributions from central retinal artery and pial vessels are very small.  Moreover, the most reliable parameters of ONH perfusionare EDV and RI. EDV, reflecting the average blood flow during the longest phase of the cardiac cycle, seems to be more suitablethan PSV, which represents only an instantaneous variation of blood flow.  Thus we can infer that retrobulbar hemodynamics is more altered in POAG patients than PACG patients.
Similar to our study NC Sharma, D Bangiya et al  also in their study found that most of the blood flow parameters were more altered in POAG patients as compared to PACG …show more content…
For that we would need diameters of these vessels which is practicallyimpossible with this technique. Moreover SPCAs being the major blood supply to ONH are the most important vessels to be studied. But CDI cannot separately measure the parameters in each of these vessels. The values obtained represent the mass effect produced by a bundle of vessels, rather than from individual ciliary vessels. Therefore we would need a better alternative in future with the same advantages as