There were no sequelae such as metamorphopsia and persistent central or paracentral scotoma
, which were reported in up to 59.5% of 74 affected eyes at 2-year follow-up in a study by Teoh et al.
Moreover, early glaucoma characteristic damage of the arch fibers of the retinal nerve usually results in paracentral scotoma
or nasal step in the upper and the lower Bjerrum areas (5[degrees]-25[degrees]) or nasal peripheral areas.
Visual field tests were divided into six categories: no abnormality, decreased retinal sensitivity, paracentral scotoma
, concentrically narrowed visual field, arch scotoma, and quadrant irregularities.
(15) HH may occur in different forms: (16) complete hemianopia, affecting both the upper and lower areas of the visual hemifield; quadrantanopia, affecting a visual quadrant; or a paracentral scotoma
which does not exceed 10[degrees]and lies on the immediate edge of the central vision.
Macular edema, a leading cause of vision loss, has been reported in 60% of cases of retinal vein occlusion (RVO).1 The use of grid laser photocoagulation is known to be an effective treatment option in treatment of macular edema due to branch retinal vein occlusion (BRVO).2 However, grid laser photocoagulation has limited application due to the risk of developing iatrogenic paracentral scotoma
; in addition, some eyes are resistant to treatment.3 In addition grid laser photocoagulation treatment has not been recommended in macular edema due to CRVO.4
Static perimetry (Humphrey Visual Field Analyzer, HFA, SAD; Threshold test C 30-2) revealed defects in the visual field of the right eye, blind spot enlargement, absolute central scotoma, absolute and relative paracentral scotoma
(MD -9.08 dB, PSD 8.09 dB).
Table 4: Adverse effects of grid laser Adverse Effects Adverse Effects Eyes which underwent grid laser (n=30) Pre-treatment Post-treatment 3 Months 6 Months 1 Year Worsening of 0 3 2 1 Macular Edema (-ve Funduscopic findings) Retinal Hemorrhages 0 1 1 0 Para central Scotoma 0 1 1 1 Vitreous Contraction 0 1 0 0 Adverse effects (Table 4) noted at 3 months were: there was worsening of macular edema in three eyes, retinal hemorrhage in one eye, vitreous contraction in one eye and paracentral scotoma
in one eye.
The patient was a 43-year-old German woman who sought care during July 2010, after 4 days of perceiving flashing lights in her visual field and a paracentral scotoma
in her left eye.
Even individuals with a paracentral scotoma
may have a scotoma that is next to the fovea and impairs reading.
Symptoms included decreased visual acuity (VA) and color vision, micropsia, metamorphopsia, or paracentral scotoma
. It is related to type A personality, stress, and patients with an elevated level of corticosteroids .
(3) Additional signs may include a visual field defect (most commonly central or paracentral scotoma
), optic disc swelling (in 35% of cases), and mild vitritis.
Patients with homonymous hemianopia involving the central 5[degrees] complain of difficulty in reading, and are classified as "hemianopic dyslexia" Patients with homonymous paracentral scotoma
may be impaired while driving despite having a relatively large visual field intact.