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 angle glaucoma may actually be suffering from juvenile open angle
 , _ glaucoma, m_/
 There are two major types of glaucomas acute or narrow
 angle glaucomas and chronic or primary open-angle glaucoma°
 Acute or narrow-angle glaucomas (accounting for approximately 10%
 of all cases) triter sudden intolerable increases in intraocula_
 pressure0 may cause intense debilitating pain and often result
 in an extremely rapid loss of vision° In nearly all instances,
 narrow or acute glaucomas require a surgical response to relieve
 excessive XOPo Drug therapies are seldom prescribed to patients
 afflicted with acute glaucomas. _2ul/
 ..... The vast majority of glaucoma patients (approximately
 90%) suffer from chronic or primary open-angle glaucoma
 (POAG). _2// While there are many variants to POAG, nearly all
 ........ are characterized bY abnormally elevated ocular tensions. In the
 normal eye, ocular tensions range from 9 to 18 millimeters of
 mercury (mm Hg.). Tensions which exceed 20 mm Hg. are generally
 considered suspect. 4t_/ Patients afflicted with POAG experience
 damage to the optic nerve as the result of abnormally elevated
 intraocular tensions. Unrelieved, these excessive intraocular
 __q/ Cross examination of Dr. John Merritt, Tr. 10-112. °°_
 notes, "The young patient tends to have a more severe form of
 glaucom_o ° _ and the young [glaucoma patients_ are far more
 difficult to treat" Tr. i0-176-177.
 _2_I/ Affidavit of Dr. George Spaeth at 5, "the secondary
 [narrow-angle] glaucomas, are usually treated . . . surgicallyo _
 4_/ Affidavit Robert Randall, Exhibit 2B, Affidavit of Robert
 Helper, M.D. at _ 3_ Affidavit of Dr_ George Spaeth, at 5, "The
 only types of glaucoma which is [are_ pertinent to these proceedings."
 _2_/ Cross-examination of Dr. Richard North, Tr. 7-71.

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