Spontaneous extrusion of subconjuctival cysticercus cellulosae.
Explore the source record for details and available documents.
Child↗
Biomedical subjects
A K Khurana
Publications and source records attributed to A K Khurana.
Contrast sensitivity function in pseudophakics and aphakics.
PURPOSE: To study the effect of posterior chamber intraocular lenses and aphakic spectacles on contrast sensitivity. METHODS: Contrast sensitivity was evaluated in 20 patients in each group of pseudophakics with post chamber IOL (group I), aphakics with spectacle correction (group II), and age and sex-matched normal subjects (group III) using the Pelli-Robson chart. RESULTS: The mean values of log contrast sensitivity in pseudophakics (1.665+/-0.105) and aphakes with spectacle correction (1.5075+/-0.1) were found to be statistically significantly low (t: 5.186, p < 0.001; t: 11.302, p < 0.001, respectively) as compared to the mean value of normal phakic subjects (1.8075+/-0.0576). Further, mean values of log contrast sensitivity in aphakes with spectacles correction were also found to be statistically significantly low (t: 4.727, p < 0.001) when compared to that in pseudophakes. CONCLUSION: From observations of the present study, it can be concluded that posterior chamber IOL implantation offers an added advantage of higher contrast sensitivity, over and above the well documented advantages of increased field of vision, negligible effect on image size and elimination of prismatic effect and spherical aberration of thick glasses.
Aphakia, Postcataract↗
Tear immunoglobulins and lysozyme levels in corneal ulcers.
Explore the source record for details and available documents.
Corneal Ulcer↗
Evaluation of subconjunctival anaesthesia vs peribulbar anaesthesia in cataract surgery.
A comparative study was carried out to evaluate peribulbar anaesthesia (group A) vs subconjunctival anaesthesia (group B). The results proved peribulbar anaesthesia to be more effective than subconjunctival anaesthesia as regards orbicularis akinesia (p < 0.05) and ocular akinesia (p < 0.05). There was no significant difference in the sensory anaesthesia, analgesia and intraocular pressure changes in the two groups (p > 0.05). Block assessment was ideal in 80% of patients in group A in comparison to 51% in group B (p < 0.05), and unsatisfactory in 14% in group A and 30% in group B (p < 0.05). Further, no significant complications were observed with peribulbar anaesthesia. Therefore, we conclude that peribulbar anaesthesia should be preferred over subconjunctival anaesthesia for conventional extracapsular cataract extraction with or without intraocular lens implantation.
Anesthesia, Local↗
Changes in arterial blood pressure during traction of extra-ocular muscles. A study in rabbits.
A significant reflex fall in mean arterial blood pressure from baseline values was observed during extra-ocular muscle traction in rabbits. This effect could be abolished only by retrobulbar block (afferent pathway block) and not by vagotomy, intravenous atropine or glycopyrronium, suggesting that it is distinct from, and independent of, the oculocardiac reflex. We suggest that these reflex changes in blood pressure be known as the 'oculodepressor reflex'.
Animals↗
Tear film profile in Graves' ophthalmopathy.
Tear film profile was studied in 30 patients with Graves' ophthalmopathy. Tear film pH, fluorescein staining, marginal tear strip and Schimer test values in patients with Graves' ophthalmopathy were comparable with controls, indicating normal tear secretion. Tear film break-up-time (BUT) in late Graves' ophthalmopathy was significantly low suggesting unstable tear film. Rose bengal as well as lissamine green staining intensity scores were significantly high, indicating presence of drying epithelial cells in early as well as late Graves' ophthalmopathy patients.
Adolescent↗
An experimental model of oculorespiratory reflex.
An experimental study of the oculorespiratory reflex (ORR) was conducted on 20 albino rabbits using a square wave (SW) type of stimulus. The ORR could be elicited in 100% of animals. The medial rectus was observed to be most reflexogenic for ORR. The frequency and pattern of ORR was not affected by bilateral vagotomy, intravenous atropine or glycopyrrolate, but could be completely abolished by retrobular block.
Animals↗
Tear film profile in dry eye.
Tear film profile was studied in 100 consecutive patients with dry eye along with 100 age and sex matched controls. The frequency of abnormal tear function tests observed in patients with dry eye and controls was: marginal tear strip 93% and 11%, rose bengal staining 89% and 0%, lissamine green staining 87% and 0%, BUT 79% and 14%, Schirmer test 79% and 3% and fluorescein staining 69% and 0%, respectively. No significant difference was observed between tear pH of patients with dry eye and that of normal healthy subjects. A new, simple and effective objective criteria of confirming and grading dry eye based upon a points scoring system derived from the results of various tear film tests is suggested.
Adolescent↗
Topical indomethacin for vernal keratoconjunctivitis.
Twenty-five patients with vernal keratoconjunctivitis (VKC) were treated with 1% indomethacin eyedrops and were followed for 5 weeks. Apart from 4 patients all of them showed marked improvement. The possible mechanism of the role of indomethacin in VKC is discussed.
Administration, Topical↗
Tear lysozyme levels in bacterial, fungal and viral corneal ulcers.
Low levels of tear lysozyme were observed in patients with infective corneal ulcers, when compared with controls. Lowest levels were seen in patients with bacterial corneal ulcers. The levels of tear lysozyme showed a corresponding decrease with the increase in Schirmer test values; meaning thereby, that in ocular conditions associated with increased rate of tear flow, the lysozyme content in tears tends to be low.
Adult↗
Serum and tear immunoglobulins in bacterial, fungal and viral corneal ulcers.
Serum and tear IgA, IgG and IgM levels were studied in patients with bacterial, fungal and viral corneal ulcers. In patients with viral corneal ulcers serum IgA and IgG levels were found to be significantly raised, while IgM concentration remained unaltered. In bacterial and mycotic ulcerations, serum IgA, IgG and IgM levels remained unaltered. All three immunoglobulins were found to be raised in tears of patients with viral corneal ulcers, while only IgA levels were found to be increased in bacterial and mycotic ulcerations.
Adult↗
Ankle reflex photomotogram in thyroid dysfunctions.
The tap to half relaxation time of tendon achilles reflex was measured in thirty control subjects, forty-five thyrotoxic and sixty hypothyroid patients. The half relaxation time in the control males and females was 279.33 +/- 76.39 msec and 320.00 +/- 52.37 msec. respectively. In thyrotoxic males and females the half relaxation time was 256.67 +/- 31.62 msec (P less than 0.01) and 252.50 +/- 47.68 msec (P less than 0.01) respectively. Amongst the hypothyroid male and female patients the half relaxation time was 405.0 +/- 35.56 msec (P less than 0.01) and 422.5 +/- 115.36 (P less than 0.01) respectively. As all these values were statistically significant, we consider the photomotographic measurement of ankle reflex as an important aid to the diagnosis of thyroid hormone imbalances.
Adult↗
Savlon keratopathy a clinical profile.
The present work highlights our observations on "iatrogenic" superficial punctate keratopathy following use of savlon as cleansing agent before ocular surgery. It is emphasized that savlon, if used for skin preparation, should be carefully painted on or safer antiseptics, viz, betadine, be employed instead.
Anti-Inflammatory Agents, Non-Steroidal↗
An unusual case of endogenous aspergillus endophthalmitis.
Endogenous aspergillus endophthalmitis is not a common entity. So far, about 25 cases have been reported in the world literature, and to the best of our-knowledge, the crystalline lens was invaded by the fungus in none of the cases, as seen in the present case. This unusual feature, coupled with the rarity of the condition in general, made it worth reporting.
Anterior Chamber↗
Acute psychosis associated with topical cyclopentolate hydrochloride.
Explore the source record for details and available documents.
Acute Disease↗
Tear film flow and stability in seropositive patients of rheumatoid arthritis.
Tear film flow and stability studies were carried out in 25 serologically positive patients with rheumatoid arthritis, who were without ocular symptoms, by performing Schirmer test I and break-up time (BUT) measurements. The values of BUT and Schirmer in 25 cases were decreased significantly when compared with 25 matched controls. Further, an inverse relation was observed between the values of these tear function tests and the serum immunoglobulin levels, thereby depicting that higher values of serum immunoglobulins in rheumatoid arthritis may be helpful in segregating the cases who may eventually develop dry eyes.
Adult↗
Status of cyclopentolate as a cycloplegic in children: a comparison with atropine and homatropine.
We compared the cycloplegic effects of cyclopentolate, homatropine and atropine by the retinoscopy findings and residual accommodation left following their use in the same individual. The mean residual accommodation measured after the use of cyclopentolate, homatropine and atropine was 1.48 +/- 0.33 D, 2.32 +/- 0.37 D and 1.10 D +/- 0.28 D, respectively, and the mean difference in retinoscopy readings between cyclopentolate and homatropine, homatropine and atropine, and atropine and cyclopentolate was 0.46 +/- 0.21, 0.71 +/- 0.23 and 0.26 +/- 0.14, respectively. We further observed that a tonus allowance of about +0.75 D would suffice for cyclopentolate. The merits for recommending cyclopentolate as a routine cycloplegic in children are discussed.
Accommodation, Ocular↗
Study of Duane's retraction syndrome.
The clinical observations made on 20 patients (24 eyes) of Duane's retraction syndrome are presented. A modification of Huber's classification of the syndrome is suggested in order to make it more clinically orientated.
Duane Retraction Syndrome↗