Create issue ticket

279 Possible Causes for Melanin Dispersion in Iris, PPA - Peripapillary Atrophy, Transillumination of the Iris

  • Knobloch Syndrome Type 1

    […] pigment epithelial cell layer and release of melanin granules that resembled the human pigment dispersion syndrome. 33 Two patients in our series with clinical features of[] Anterior segment abnormalities included absent iris crypts, iris transillumination, lens subluxation, and cataract.[] Absence of iris crypts and a single case of iris atrophy have been described previously. 3 - 5 , 32 In a knockout mouse model COL18a1 / , there was disruption of the posterior iris[]

  • Exfoliation Syndrome

    The melanin dispersion is from atrophy of the iris pigment epithelium. Actual pseudoexfoliative material may be noted on the TM.[] Furthermore, prominent concentric, circular iris transillumination (grade 3) was only observed in XFS.[] Other clinical signs associated with exfoliation syndrome are pigment dispersion, transillumination defects of the iris and reduced response to mydriatics.[]

    Missing: PPA - Peripapillary Atrophy
  • Pseudoexfoliation Syndrome

    Peripapillary atrophy and iris sphincter region transillumination Melanin dispersion associated with pupillary dilation Poor mydriasis, asymmetric pupil sizes Melanin dispersion[] Loss of iris pigment and its deposition throughout the anterior segment are refl ected in iris sphincter region transillumination defects, loss of the pupillary ruff, pigment[] Atrophy of the pigment epithelium may be associated with anterior chamber melanin dispersion, which may be seen as a whorl-like pattern of pigment particles on the iris sphincter[]

    Missing: PPA - Peripapillary Atrophy
  • Open-Angle Glaucoma

    POAG but IOP always measured within normal limits) Primary angle closure glaucoma (narrow drainage angle on gonioscopy) Pigment dispersion glaucoma (Krukenberg spindle, iris[] PURPOSE: To examine the morphology of Bruch's membrane opening (BMO), optic disc, and peripapillary atrophy (PPA) by scanning laser ophthalmoscopy (SLO) and spectral-domain[] It is hypopigmented and corresponds with an absolute scotoma. 18 Alpha zone peripapillary atrophy (PPA) is a crescent of hyperpigmented irregularities in the RPE and corresponds[]

    Missing: Melanin Dispersion in Iris
  • Glaucoma Related Pigment Dispersion Syndrome

    […] and iris atrophy.[] Iris transillumination.[] In patients with pigmentary glaucoma lower energy laser needs to be used during SLT due to iris pigment in the trabecular meshwork increasing the overall melanin pigment present[]

    Missing: PPA - Peripapillary Atrophy
  • Ectopia Lentis

    Those patients with simple lens ectopia as well as those with ectopic lenses and pupils had striking transillumination of the iris periphery.[] The association between ectopia lentis et pupillae and transillumination of the iris is well documented in the literature, but it has never been reported with skin hypopigmentation[] transillumination, poor pupillary dilatation, persistent pupillary membranes, iridohyaloid adhesions, and prominent iris processes in the anterior chamber angle.[]

    Missing: Melanin Dispersion in Iris PPA - Peripapillary Atrophy
  • Coloboma of Optic Papilla

    […] area specifically for parapapillary atrophy (PPA) which is common, particularly in glaucomatous eyes The NRR consists of bundles of all the nerve fibres as they exit through[] […] stroma. • usually wedge-shaped • best demonstrated by iris transillumination. • associated with Heterochromia iridis c/f • usually no visual defect, treatment • indicated[] […] evaluation) : 3 Margins can be described as distinct or indistinct; if indistinct margins are noted, specify the quadrant(s) affected 4 While investigating the margins, note the peripapillary[]

    Missing: Melanin Dispersion in Iris
  • Oculocutaneous Albinism

    An African girl with OCA-2 showing iris transillumination, yellowish tinted hair and many solar lentigines.[] As a measure of ocular pigment, iris transillumination and macular transparency were graded according to a previously published scheme.[] Traditionally, the diagnosis of ocular or oculocutaneous albinism (OCA) is based on a constellation of features including the presence of nystagmus associated with iris transillumination[]

    Missing: Melanin Dispersion in Iris PPA - Peripapillary Atrophy
  • Iris Atrophy

    Clinically the iris would show hypopigmentation without transillumination defects. B. Iris pigment epithelial atrophy in diabetes mellitus.[] Infrared transillumination stereophotography of normal iris. Can J Ophthalmol 1977 ; 12: 308 – 11 . Google Scholar Medline ISI 19.[] RESULTS: Infrared transillumination imaging showed extensive atrophy of the iris stroma and occasional pigment clumps both in the pupillary and ciliary zones of the iris,[]

    Missing: Melanin Dispersion in Iris PPA - Peripapillary Atrophy
  • Ocular Albinism

    Other definite findings include lack or absence of stereoacuity, transillumination defects of iris and pendular nystagmus which typically develops in affected males during[] However, on further examination by a specialist the iris turns out to be able to let light through. This is called iris transillumination.[] In this study, eight of ten black ocular albinos from two kindreds had nonalbinotic, moderately pigmented fundi and no transillumination of the iris.[]

    Missing: Melanin Dispersion in Iris PPA - Peripapillary Atrophy

Similar symptoms